Use advertise srv6 locator to enable the device to generate routes for a locator in the BGP IPv6 unicast routing table and advertise the routes to BGP peers.

Use undo advertise srv6 locator to delete routes for a locator from the BGP IPv6 unicast routing table.

Syntax

advertise srv6 locator locator-name [ route-policy route-policy-name ]

undo advertise srv6 locator locator-name

Default

The device does not generate routes for a locator in the BGP IPv6 unicast routing table.

Views

BGP IPv6 unicast address family view

Predefined user roles

network-admin

Parameters

locator-name: Specifies a locator by its name, a case-sensitive string of 1 to 31 characters.

route-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters. Only routes that match the routing policy can be generated in the BGP IPv6 unicast routing table for the locator. All routes for the locator can be generated in the BGP IPv6 unicast routing table in the following situations:

· You do not specify a routing policy when using this command.

· The specified routing policy does not exist.

· The specified routing policy does not contain if-match clauses.

Usage guidelines

Use this command in an inter-AS BGP network. This command enables the device to use BGP to advertise routes for a locator.

Repeat this command to enable the device to use BGP to advertise routes for multiple locators.

Examples

# Enable the device to generate routes for locator abc in the BGP IPv6 unicast routing table and advertise the routes to BGP peers.

<Sysname> system-view

[Sysname] bgp 100

[Sysname-bgp-default] address-family ipv6

[Sysname-bgp-default-ipv6] advertise srv6 locator abc

Related commands

display segment-routing ipv6 locator

locator

anycast enable

Use anycast enable to enable anycast for an SRv6 locator.

Use undo anycast enable to disable anycast for an SRv6 locator.

Syntax

anycast enable

undo anycast enable

Default

Anycast is disabled for an SRv6 locator.

Views

SRv6 locator view

Predefined user roles

network-admin

Usage guidelines

After you apply a locator to a routing protocol, the routing protocol will advertise the SRv6 SIDs in the locator. By default, the N-bit is set in the Flags field of the Locator TLV in routing protocol packets. The locator belongs to one SRv6 node. If you enable anycast for a locator, the A-bit is set in the Flags field of the Locator TLV in routing protocol packets. The locator is shared by a group of SRv6 nodes.

Examples

# Enable anycast for locator test1.

<Sysname> system-view

[Sysname] segment-routing ipv6

[Sysname-segment-routing-ipv6] locator test1 ipv6-prefix 100:: 64 static 32

[Sysname-segment-routing-ipv6-locator-test1] anycast enable

Related commands

locator

display isis segment-routing ipv6 capability

Use display isis segment-routing ipv6 capability to display IS-IS SRv6 capability information.

Syntax

display isis segment-routing ipv6 capability [ level-1 | level-2 ] [ process-id ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

level-1: Specifies IS-IS Level-1.

level-2: Specifies IS-IS Level-2.

process-id: Specifies an IS-IS process by its ID, in the range of 1 to 65535. If you do not specify a process, this command displays SRv6 capability information for all IS-IS processes.

Usage guidelines

If you do not specify a level, this command displays IS-IS SRv6 capability information for both Level-1 and Level-2.

Examples

# Display SRv6 capability information for IS-IS process 1.

<Sysname> display isis segment-routing ipv6 capability level-1 1

IPv6 segment routing capability information for IS-IS(1)

Level-1 IPv6 segment routing capability

System ID SRv6 capability

0000.1000.0001 Enabled

0000.2000.0001 Enabled

0000.2000.0002 Enabled

0000.2000.0003 Enabled

Table 1 Command output

Field	Description
System ID	Neighbor system ID.
SRv6 capability	Whether SRv6 is enabled.

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display isis segment-routing ipv6 locator

Use display isis segment-routing ipv6 locator to display IS-IS SRv6 locator information.

Syntax

display isis segment-routing ipv6 locator [ ipv6-address prefix-length ] [ flex-algo flex-algo-id | [ level-1 | level-2 ] | verbose ] * [ process-id ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

ipv6-address prefix-length: Specifies a destination IPv6 address prefix and the prefix length. The value range for the prefix-length argument is 1 to 128.

flex-algo flex-algo-id: Specifies a Flex-Algo by its ID, in the range of 128 to 255. If you do not specify a Flex-Algo, this command displays locator route information calculated by all Flex-Algos.

level-1: Specifies the level-1 area.

level-2: Specifies the level-2 area.

verbose: Displays detailed IS-IS SRv6 locator information. If you do not specify this keyword, the command displays only brief IS-IS SRv6 locator information.

process-id: Specifies an IS-IS process by its ID, in the range of 1 to 65535. If you do not specify a process, this command displays IS-IS SRv6 locator information for all IS-IS processes.

Examples

# Display IS-IS SRv6 locator information.

<Sysname> display isis segment-routing ipv6 locator

Route information for IS-IS(1)

------------------------------

Level-1 Locator Route Table

---------------------------

Destination : 201:: PrefixLen: 64

Flags : R/-/- Cost : 2

Next hop : FE80::38A5:3DFF:FEE9:218 Interface: XGE2/0/0

Destination : 202:: PrefixLen: 64

Flags : R/-/- Cost : 1

Next hop : FE80::38A5:3DFF:FEE9:218 Interface: XGE2/0/2

Flags: D-Direct, R-Added to Rib, L-Advertised in LSPs, U-Up/Down Bit Set

Table 2 Command output

Field	Description
Destination	Destination IPv6 prefix.
PrefixLen	Prefix length.
Flag/Flags	Route flags: · D—The route is a direct route. · R—The route has been flushed to the RIB. · L—The route has been advertised in LSPs. · U—Penetration flag. Setting it to UP can prevent an LSP sent from L2 to L1 from being sent back to L2.
Cost	Route cost value.
Next hop	Route next hop.
Interface	Output interface.

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# Display detailed IS-IS SRv6 locator route information.

<Sysname> display isis segment-routing ipv6 locator verbose

Route information for IS-IS(1)

------------------------------

Level-1 Locator Route Table

---------------------------

IPv6 dest : 5000::/64

Flag : D/L/- Cost : 0

Admin tag : - Src count : 1

Algorithm : 0

Priority : Low

Nexthop : Direct

NxthopFlag : -

Interface : NULL0 Delay Flag : N/A

Nib ID : 0x0

Flags: D-Direct, R-Added to Rib, L-Advertised in LSPs, U-Up/Down Bit Set

Level-2 Locator Route Table

---------------------------

IPv6 dest : 5000::/64

Flag : D/L/- Cost : 0

Admin tag : - Src count : 4

Algorithm : 0

Priority : Low

Nexthop : Direct

NxthopFlag : -

Interface : NULL0 Delay Flag : N/A

Nib ID : 0x0

Flags: D-Direct, R-Added to Rib, L-Advertised in LSPs, U-Up/Down Bit Set

Table 3 Command output

Field	Description
Route information for IS-IS(1)	Locator route information about the IS-IS process.
Flex Algo Route Information for IS-IS(1)	Locator route information for the specified Flex-Algo.
Level-1 Locator Route Table	IS-IS Level-1 locator route information.
Level-2 Locator Route Table	IS-IS Level-2 locator route information.
Level-1 Flex Algo(xxx) Locator Route Table	IS-IS Level-1 locator route information calculated by the Flex-Algo. The value xxx represents the Flex-Algo ID.
Level-2 Flex Algo(xxx) Locator Route Table	IS-IS Level-2 locator route information calculated by the Flex-Algo. The value xxx represents the Flex-Algo ID.
IPv6 dest	Destination IPv6 prefix
Flag	Route state flag: · D—Direct route. · R—The route has been added into the routing table. · L—The route has been advertised in an LSP. · U—Route leaking flag, indicating that the Level-1 route is from Level-2. U means that the route will not be returned to Level-2.
Cost	Route cost.
Admin tag	Administrative tag.
Src count	Number of advertisement sources.
Algorithm	Flexible algorithm ID.
Priority	Route convergence priority: · Critical. · High. · Medium. · Low.
Next hop	Next hop. If the route is a direct route, this field displays Direct.
NxthopFlag	Next hop flag. Value D indicates that the next hop is the direct next hop of the advertisement source.
Interface	Output interface.
Delay Flag	Microloop avoidance delay flag: · D—Microloop avoidance is configured. Route convergence is delayed. · N/A—Microloop avoidance is not configured or the microloop avoidance delay timer has expired. Route convergence is in progress.
Nib ID	Next hop index assigned by the routing management module.

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display ospfv3 segment-routing ipv6 capability

Use display ospfv3 segment-routing ipv6 capability to display OSPFv3 SRv6 capability information.

Syntax

display ospfv3 [ process-id ] segment-routing ipv6 capability

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

process-id: Specifies an OSPFv3 process by its ID, in the range of 1 to 65535. If you do not specify a process, this command displays SRv6 capability information for all OSPFv3 processes.

Examples

# Display SRv6 capability information for all OSPFv3 processes.

<Sysname> display ospfv3 segment-routing ipv6 capability

OSPFv3 Process 1 with Router ID 1.1.1.1

Area 0.0.0.0

------------------------------------------------------------------------

Router ID SRv6 capability

2.2.2.2 Enabled

Table 4 Command output

Field	Description
Router ID	Device router ID.
SRv6 capability	Whether SRv6 is enabled. The value can only be Enabled.

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display ospfv3 segment-routing ipv6 locator

Use display ospfv3 segment-routing ipv6 locator to display OSPFv3 SRv6 locator information.

Syntax

display ospfv3 [ process-id ] [ flex-algo flex-algo-id ] segment-routing ipv6 locator [ ipv6-address prefix-length ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

process-id: Specifies an OSPFv3 process by its ID, in the range of 1 to 65535. If you do not specify an OSPFv3 process, this command displays locator information for all OSPFv3 processes.

flex-algo flex-algo-id: Specifies a flexible algorithm by its ID. The value range for this argument is 128 to 255. If you do not specify this option, the command displays locator information for non-flexible algorithms.

ipv6-address prefix-length: Specifies an IPv6 address prefix and the prefix length. The ipv6-address argument represents the IPv6 address prefix. The prefix-length argument represents the prefix length, in the range of 32 to 120. If you do not specify this option, the command displays locator information for all IPv6 prefixes.

Examples

# Display locator information for all OSPFv3 processes.

<Sysname> display ospfv3 segment-routing ipv6 locator

OSPFv3 Process 1 with Router ID 1.1.1.1

-------------------------------------------------------------------------

I - Intra area route, E1 - Type 1 external route, N1 - Type 1 NSSA route

IA - Inter area route, E2 - Type 2 external route, N2 - Type 2 NSSA route

* - Selected route

*Destination: 192:168::12:0/120

Type : I Area : 0.0.0.0

AdvRouter : 2.2.2.2 Preference : 10

NibID : 0x23000002 Cost : 10

Interface : XGE2/0/0 BkInterface: N/A

Nexthop : ::

BkNexthop : N/A

Algorithm : 0

Status : Direct

Table 5 Command output

Field	Description
Destination	Destination network.
Type	Route type.
Area	Area ID.
AdvRouter	ID of the router that advertises LSAs.
Preference	Route preference.
NibID	ID of the next hop information in the route.
Cost	Route cost.
Interface	Output interface.
BkInterface	Backup output interface.
Nexthop	Next hop address.
BkNexthop	Backup next hop address.
Algorithm	Algorithm ID: · 0—SPF algorithm. · 128-255—Flexible algorithm.
Status	Route state: · Local—The route is a local route and has not been sent to the route management module. · Invalid—The next hop of the route is invalid. · Stale—The next hop of the route is stale. · Normal—The route is usable. · Delete—The route is deleted. · Direct—The route is a direct route. · Rely—The route is recursed by another route.

display segment-routing ipv6 available-static-sid

Use display segment-routing ipv6 available-static-sid to display available static SRv6 SIDs in a locator.

Syntax

display segment-routing ipv6 available-static-sid locator locator-name [ from begin-value ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

locator locator-name: Specifies a locator by its name, a case-sensitive string of 1 to 31 characters.

from begin-value: Specifies available static SRv6 SIDs that start from the specified value. The begin-value argument represents the start value in IPv6 address format. If you do not specify a start value, this command displays available static SRv6 SIDs starting from the smallest available one.

Usage guidelines

If you specify a static length when configuring an SRv6 locator, the device can allocate static SRv6 SIDs from the locator. Use this command to display a maximum of 10 available static SRv6 SIDs in the locator.

To specify the from begin-value option, you must first identify the static SID range of the locator. For this purpose, use the display segment-routing ipv6 locator command.

Examples

# Display available static SRv6 SIDs in locator abc.

<Sysname> display segment-routing ipv6 available-static-sid locator abc

Available static SRv6 SID table

200:1::1

200:1::2

200:1::3

200:1::4

200:1::5

200:1::6

200:1::7

200:1::8

200:1::9

200:1::A

Available static SRv6 CSID table

200:1::1:0:0

200:1::2:0:0

200:1::3:0:0

200:1::4:0:0

200:1::5:0:0

200:1::6:0:0

200:1::7:0:0

200:1::8:0:0

200:1::9:0:0

200:1::A:0:0

Table 6 Command output

Field	Description
Available static SRv6 SID table	Available static non-compressible SRv6 SIDs.
Available static SRv6 CSID table	Available static compressible SRv6 SIDs.
N/A	No static SRv6 SIDs are available.

Related commands

display segment-routing ipv6 locator

display segment-routing ipv6 brief

Use display segment-routing ipv6 brief to display brief SRv6 information.

Syntax

display segment-routing ipv6 brief

Views

Any view

Predefined user roles

network-admin

network-operator

Examples

# Display brief SRv6 information.

<Sysname> display segment-routing ipv6 brief

Current SRv6 info:

Flavor mode: NO-PSP

SRv6 info at next reboot:

Flavor mode: NO-PSP

SRv6 TE FRR: Disabled

SRH flag check: Disabled

Encapsulation source-address: -

TTL mode: pipe

Path MTU: 1500

Path MTU reserved: 0

SRv6 compression: Disabled

Diffserv mode info:

Ingress mode: -

Engress mode: -

Service class: 0

End.X update-delay time: 100 ms

SRv6 locator SBFD: Enabled

SRv6 locator SBFD Template: LocatorBFD

SRv6 locator SBFD prefix-list: prefixlist

Table 7 Command output

Field	Description
Current SRv6 info	Current active SRv6 information.
SRv6 info at the next reboot	SRv6 information that takes effect at the next startup.
Flavor mode	SRv6 SID flavor: · PSP—The penultimate SRv6 node removes the SRH. · NO-PSP—The penultimate SRv6 node does not remove the SRH.
SRv6 TE FRR	SRv6 TEE FRR status: · Disabled. · Enabled. · Downgrade—Switched to SRv6 BE FRR.
SRH flag check	SRH flag check status: · Disabled. · Enabled.
Encapsulated source address	Source IP address in the IPv6 header encapsulated by SRv6.
IP TTL	TTL value in the IPv6 header encapsulated by SRv6.
TTL mode	TTL handling mode of the SRv6 TE policy: · pipe—Pipe mode. · uniform—Uniform mode.
Path MTU	Path MTU value for SRv6.
Path MTU reserved	Global reserved path MTU for SRv6.
SRv6 compression	SRv6 compression status: · Disabled. · Enabled.
Diffserv mode info	SRv6 DiffServ mode.
Ingress mode	SRv6 DiffServ mode in the inbound direction: · pipe—Pipe mode. · short-pipe—Short-pipe mode. · uniform—Uniform mode. If SRv6 DiffServ mode in the inbound direction is not configured, this field displays a hyphen (-).
Engress mode	SRv6 DiffServ mode in the outbound direction: · pipe—Pipe mode. · short-pipe—Short-pipe mode. · uniform—Uniform mode. If SRv6 DiffServ mode in the outbound direction is not configured, this field displays a hyphen (-).
Service class	Traffic class for packets entering the SRv6 network from a common IP network.
End.X update-delay time	Delay time to flush static End.X SIDs to the FIB, in milliseconds.
SRv6 locator SBFD	SBFD status for SRv6 locators: · Disabled. · Enabled.
SRv6 locator SBFD Template	Template used for detecting the SBFD session status for SRv6 locators. This field is not displayed if no such template is configured.
SRv6 locator SBFD Prefix-list	IPv6 prefix list referenced by SBFD for SRv6 locators. This field is not displayed if no such IPv6 prefix list is configured.

‌

display segment-routing ipv6 forwarding

Use display segment-routing ipv6 forwarding to display SRv6 forwarding entry information.

Syntax

display segment-routing ipv6 forwarding [ entry-id [ relation ] | forwarding-type { srv6be | srv6frr | srv6pcpath | srv6pgroup | srv6policy | srv6sidlist | srv6sids } ] [ slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

entry-id: Specifies an SRv6 forwarding entry by its ID. The value range for this argument is 0 to 4294967294. If you do not specify an SRv6 forwarding entry ID, this command displays information about all SRv6 forwarding entries.

relation: Displays information about entries associated with the specified entry.

forwarding-type: Specifies a forwarding type. If you do not specify a forwarding type, this command displays SRv6 forwarding information for all forwarding types.

srv6be: Specifies tunnels in SRv6 BE paths.

srv6frr: Specifies tunnels in SRv6 FRR.

srv6pcpath: Specifies tunnels in SRv6 TE policy candidate paths.

srv6pgroup: Specifies tunnels in SRv6 TE policy groups.

srv6policy: Specifies tunnels in SRv6 TE policies.

srv6psidlist: Specifies tunnels defined by SID lists in SRv6 TE policies.

srv6sids: Specifies tunnels matching SRv6 SIDs.

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command displays SRv6 forwarding entries on the active MPU.

Examples

# Display all SRv6 forwarding entries.

<Sysname> display segment-routing ipv6 forwarding

Total SRv6 forwarding entries: 4

Flags: T – Forwarded through a tunnel

N – Forwarded through the outgoing interface to the nexthop IP address

A - Active forwarding information

B – Backup forwarding information

ID FWD-Type Flags Forwarding info

Attri-Val Attri-Val

--------------------------------------------------------------------------------

2148532225 SRv6PSIDList NA XGE2/0/0

FE80::54CB:70FF:FE86:316

{6000::1, 7000::1, 8000::1}

2148532226 SRv6PSIDList NA XGE2/0/2

FE80::44A8:69FF:FE19:233

{22::16,

3:5:7000:1::,

[7000:5, 7000:4, 7000:3, 7000:2],

[7000:100],

3:5:8000:1::,

[8000:3, 8000:4]}

2149580801 SRv6PCPath TA 2148532225

2150629377 SRv6Policy TA 2149580801

Policy10

2153775105 SRv6SFC NA XGE2/0/0

FE80::54CB:70FF:FE86:316

{6000::1, 7000::1, 8000::1}

Table 8 Command output

Field	Description
FWD-Type	Tunnel forwarding type: · SRv6SIDs—Tunnel established based on SRv6 SIDs. · SRv6PSIDList—Tunnel established based on the SID list in an SRv6 TE policy. · SRv6PCPath—Tunnel established on the candidate path selected by an SRv6 TE policy. · SRv6Policy—SRv6 TE policy tunnel. · SRv6PGroup—SRv6 TE policy group tunnel. · SRv6BE—Tunnel established on the path selected in the SRv6-BE mode. · SRv6FRR—Tunnels to the primary and backup nexthops of SRv6 FRR. · SRv6SFC—Tunnels established based on SRv6 SFCs.
Flags	Forwarding flags: · T—Tunnel forwarding. · N—Output interface or next hop forwarding. · A—Active forwarding information. · B—Backup forwarding information.
Forwarding info	SRv6 forwarding information. · For the N forwarding flag, the forwarding information includes the output interface, next hop, and SID list. A SID in [xx:xx, xx:xx, xx:xx, xx:xx], [xx:xx, xx:xx, xx:xx], [xx:xx, xx:xx], or [xx:xx] format is composed of G-SIDs, where xx:xx represents a G-SID. Only the 32-bit G-SID compression mode (cos32) is supported, so such a SID can contain a maximum of four G-SIDs, listed in ascending order by SI. · For the T forwarding flag, the forwarding information is the SRv6 forwarding entry ID.
Attri-Val	Forwarding attribute. In the current software version, the value is an SRv6 TE policy name. This field is available only when the value for the FWD-Type field is SRv6Policy or SRv6PGroup.

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display segment-routing ipv6 local-sid

Use display segment-routing ipv6 local-sid to display information about the SRv6 local SID forwarding table.

Syntax

display segment-routing ipv6 local-sid [ locator locator-name ][ end-x | end-x-coc32 | end-x-coc-none ] [ sid | interface interface-type interface-number [ nexthop nexthop-ipv6-address ] ] [ owner owner ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

locator locator-name: Specifies a locator by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a locator, this command displays information about the SRv6 local SID forwarding table for all locators.

end: Specifies End SIDs.

end-am: Specifies End.AM SIDs.

end-as: Specifies End.AS SIDs. In the current software version, the device does not support SRv6 SFC.

end-b6encaps: Specifies End.B6ENCAPS SIDs.

end-b6encapsred: Specifies End.B6ENCAPSRED SIDs.

end-b6insert: Specifies End.B6INSERT SIDs.

end-b6insertred: Specifies End.B6INSERTRED SIDs.

end-bier: Specifies End.BIER SIDs.

end-coc-none: Specifies End (COCNONE) SIDs.

end-coc32: Specifies End (COC32) SIDs.

end-dt2m: Specifies End.DT2M SIDs.

end-dt2u: Specifies End.DT2U SIDs.

end-dt2ul: Specifies End.DT2UL SIDs.

end-dt4: Specifies End.DT4 SIDs.

end-dt46: Specifies End.DT46 SIDs.

end-dt6: Specifies End.DT6 SIDs.

end-dx2: Specifies End.DX2 SIDs.

end-dx2l: Specifies End.DX2L SIDs.

end-op: Specifies End.OP SIDs.

end-rgb: Specifies End.RGB SIDs.

end-x: Specifies End.X SIDs.

end-x-coc-none: Specifies End.X (COCNONE) SIDs.

end-x-coc32: Specifies End.X (COC32) SIDs.

src-dt4: Specifies Src.DT4 SIDs.

src-dt6: Specifies Src.DT6 SIDs.

sid: Specifies an SRv6 SID. If you do not specify an SRv6 SID, this command displays SRv6 local forwarding table information for all SRv6 SIDs of the specified type.

vpn-instance vpn-instance-name: Specifies the MPLS L3VPN instance to which the SRv6 SIDs belong. The vpn-instance-name argument is a case-sensitive string of 1 to 31 characters. If you do not specify this option, the command displays SRv6 local SID forwarding table information in the public network.

interface interface-type interface-number: Specifies an output interface by its type and number. If you do not specify an output interface, the command displays SRv6 local SID forwarding table information for all End.X SIDs.

nexthop nexthop-ipv6-address: Specifies the IPv6 address of a next hop. If you do not specify a next hop, the command displays SRv6 local SID forwarding table information for all IPv6 next hops.

owner owner: Specifies a protocol. The value for the owner argument is case insensitive. The supported values include BGP, BIER, IS-IS, L2VPN, MVPN, NAT, OSPFv3, SIDMGR, and SRPolicy. If you do not specify a protocol, this command displays information about the SRv6 local SID forwarding table for all protocols.

Examples

# Display SRv6 local forwarding table information for all End SIDs.

<Sysname> display segment-routing ipv6 local-sid end

Local SID forwarding table (End)

Total SIDs: 1

SID : 100::64/96

Function type : End Flavor : PSP

Locator name : abc Allocation type: Static

Owner : SIDMGR State : Active

Create Time : May 19 17:21:15.687 2020

# Display SRv6 local forwarding table information for all End.X SIDs.

<Sysname> display segment-routing ipv6 local-sid end-x

Local SID forwarding table (End.X)

Total SIDs: 1

SID : 1000:0:0:15::/32

Function type : End.X Flavor : PSP

Interface : XGE2/0/0 Interface index: 0x102

Next hop : FE80::1 Allocation type: Static

Locator name : abc

Owner : SIDMGR State : Active

Create Time : May 19 17:21:46.740 2020

# Display SRv6 local forwarding table information for all End.DT4 SIDs.

<Sysname> display segment-routing ipv6 local-sid end-dt4

Local SID forwarding table (End.DT4)

Total SIDs: 1

SID : 6:5::1:1/120

Function type : End.DT4 Flavor : PSP

VPN instance : vpn1 Allocation type: Static

Network type : MPLS L3VPN

Locator name : abc

Owner : SIDMGR State : Active

Create Time : May 19 17:22:27.356 2020

# Display SRv6 local forwarding table information for all End.DT6 SIDs.

<Sysname> display segment-routing ipv6 local-sid end-dt6

Local SID forwarding table (End.DT6)

Total SIDs: 1

SID : 1:2::2:2/120

Function type : End.DT6 Flavor : PSP

VPN instance : vpn1 Allocation type: Static

Network type : MPLS L3VPN

Locator name : abc

Owner : SIDMGR State : Active

Create Time : May 19 17:22:27.356 2020

# Display SRv6 local forwarding table information for all End.OP SIDs.

<Sysname> display segment-routing ipv6 local-sid end-op

Local SID forwarding table (End.OP)

Total SIDs: 1

SID : 100::190/96

Function type : End.OP

Locator name : abc

Owner : SIDMGR State : Active

Create Time : May 19 17:23:40.248 2020

# Display SRv6 local forwarding table information for all End.DX2 SIDs.

<Sysname> display segment-routing ipv6 local-sid end-dx2

Local SID forwarding table (End.DX2)

Total SIDs: 1

SID : 100:1:2:3::6400/96

Function type : End.DX2 Flavor : PSP

Xconnect-group: abc Connection : test

VSI name : Service ID : 0

Interface :

Locator name : abc Allocation type: Static

Owner : SIDMGR State : Active

Create Time : May 20 09:17:58.995 2020

# Display SRv6 local forwarding table information for all End.DT2U SIDs.

<Sysname> display segment-routing ipv6 local-sid end-dt2u

Local SID forwarding table (End.DT2U)

Total SIDs: 1

SID : 100:1:2:3::C800/96

Function type : End.DT2U Flavor : PSP

VSI name : abc Allocation type: Static

Locator name : abc

Owner : SIDMGR State : Active

Create Time : May 20 09:18:14.504 2020

# Display SRv6 local forwarding table information for all End.DX6 SIDs.

<Sysname> display segment-routing ipv6 local-sid end-dx6

Local SID forwarding table (End.DX6)

Total SIDs: 1

SID : 100::2/64

Function type : End.DX6 Flavor : PSP

Interface : GE1/0/1 Interface index: 0x11d

Nexthop : 100::10

VPN instance : vpn1 Allocation type: Dynamic

Locator name : aaa

Owner : BGP State : Active

Create Time : Jun 09 19:41:36.749 2020

# Display SRv6 local forwarding table information for End.AS SIDs in Layer 2 encapsulation forwarding scenario.

<Sysname> display segment-routing ipv6 local-sid end-as

Local SID forwarding table (End.AS)

Total SIDs: 1

SID : 100:1:2:3::C800/96

Function type : End.AS Allocation type: Static

Locator name : abc Forward type : L2

Inner type : IPv4 Source address : 2::60

Backup SID : 1::AA Peer SID : 300::3

Bypass : Enabled Bypass SID : 5::9

TTL mode : Uniform TTL value : -

Diffserv mode : Uniform Service class : -

Color : - Cache SL : 2

Cache list :

4::3

7::8

8::9

1::16::9

Forward No-bypass : Enabled

Encapsulation count: 2

Out-interface: XGE2/0/0 In-interface : XGE2/0/0

Out-S-VLAN : 100 Out-C-VLAN : -

In-S-VLAN : 200 In-C-VLAN : -

Dest MAC : 0056-00aa-00cb

Out-interface: XGE2/0/1 In-interface : XGE2/0/0

Out-S-VLAN : 101 Out-C-VLAN : -

In-S-VLAN : 201 In-C-VLAN : -

Dest MAC : 0056-00aa-00cd

Owner : SIDMGR State : Active

Flags : F

Create Time : May 19 17:21:15.687 2020

# Display SRv6 local forwarding table information for all End.RGB SIDs.

<Sysname> display segment-routing ipv6 local-sid end-rgb

Local SID forwarding table (End.RGB)

Total SIDs: 2

SID : 100:1:0:D::/48

Function type : End.RGB

Locator name : b Allocation type: Static

Owner : BIER State : Active

Create Time : Aug 14 17:13:46.380 2023

# Display SRv6 local forwarding table information for End.AM SIDs in the Layer 3 encapsulation forwarding scenario.

<Sysname> display segment-routing ipv6 local-sid end-am

Local SID forwarding table (End.AM)

Total SIDs: 1

SID : 100:1:2:3::C800/96

Function type : End.AM Allocation type: Static

Locator name : abc Forward type : L3

Encapsulation count: 2

Next hop : 1::1 Out-interface : XGE2/0/1

In-interface : XGE2/0/1

Next hop : 1::2 Out-interface : XGE2/0/0

In-interface : XGE2/0/0

Owner : SIDMGR State : Active

Flags : F

Create Time : May 19 17:21:15.687 2020

# Display SRv6 local forwarding table information for End.AM SIDs in the Layer 2 encapsulation forwarding scenario.

<Sysname> display segment-routing ipv6 local-sid end-am

Local SID forwarding table (End.AM)

Total SIDs: 1

SID : 100:1:2:3::C800/96

Function type : End.AM Allocation type: Static

Locator name : abc Forward type : L2

Encapsulation count: 2

Out-interface: XGE2/0/0 In-interface : XGE2/0/0

Out-S-VLAN : 100 Out-C-VLAN : -

In-S-VLAN : 200 In-C-VLAN : -

Out-interface: XGE2/0/1 In-interface : XGE2/0/1

Out-S-VLAN : 101 Out-C-VLAN : -

In-S-VLAN : 201 In-C-VLAN : -

Owner : SIDMGR State : Active

Flags : F

Create Time : May 19 17:21:15.687 2020

Table 9 Command output

Field	Description
SID	SRv6 SID.
Function type	SRv6 SID type: · End. · End.AM. · End.AS. · End.B6.Encaps. · End.B6.Encaps.Red. · End.B6.Insert. · End.B6.Insert.Red. · End.BIER. · End (COCNONE). · End.DT2M. · End.DT2U. · End.DT2UL. · End.DT4. · End.DT46. · End.DT6. · End.DX2. · End.DX2L. · End.M. · End.OP. · End.R · End.RGB · End.X. · End.X (COCNONE). · End.T. · Src.DT4. · Src.DT6.
Flavor	SRv6 SID flavor type: · NO-FLAVOR—The SRv6 SID does not carry any flavors. · PSP—The penultimate SRv6 node removes the SRH. · PSP,USP,USD—The SRv6 SID carries the PSP, USP, and USD flavors. · NOPSP—The penultimate SRv6 node does not remove the SRH. · COC—The next SID is a G-SID.
Prefix SID1	SRv6 SID that is associated with End.R SIDs and carried in the BGP route.
NexthopID1	Next hop ID of the SRv6 SID that is associated with End.R SIDs and carried in the BGP route.
Peer-set name	Name of a BGP-EPE SRv6 peer set.
Interface	Output interface.
Interface index	Output interface index.
Member port	Member port of a Layer 3 aggregate group.
Port index	Index of the member port.
Next hop	Next hop address.
VPN instance	VPN instance name. For the public network, this field displays Public instance.
Xconnect group	Cross-connect group name.
Connection	Cross-connect name.
VSI name	VSI name.
Service ID	Ethernet service instance ID. If no Ethernet service instance ID exists, this field displays 0.
Allocation type	SID allocation type: · Static—Manually configured. · Dynamic—Dynamically allocated.
Network type	Type of the network to which the SRv6 SID is applied: · MPLS L3VPN—The SRv6 SID is applied to an MPLS L3VPN network. · EVPN L3VPN—The SRv6 SID is applied to an EVPN L3VPN network. · MPLS L3VPN, EVPN L3VPN—The SRv6 SID is applied to MPLS L3VPN and EVPN L3VPN networks. · MULTICAST VPN—The SRv6 SID is applied to a multicast VPN network.
Mirror locator number	Number of protected locators.
Mirror locator	IPv6 address prefix and prefix length of each protected locator.
Owner	Protocol that applies for the SID: · SIDMGR. · BGP. · BIER. · SRPolicy. · IS-IS. · OSPFv3. · L2VPN. · LSM. · MVPN. · VSRP. · NAT.
State	SID state: · Active. · Inactive.
Create Time	SID creation time.
Forward type	SFF-to-SF packet forwarding type: · L2—Layer 2 forwarding. · L3—Layer 3 forwarding.
Inner type	Protocol type of the original SFF-to-SF packet that the SFF supports.
Source address	Source IPv6 address re-encapsulated for the packet received by the SFF from the SF.
Backup SID	Backup End.AS SID.
Peer SID	Backup SFF SID, which is the End SID.
Bypass	Bypass protection status: Enabled or disabled (-).
Bypass SID	Backup SID of the bypass path, which is the valid End.AS SID of other protection devices in the SF group.
TTL mode	TTL processing mode: · Uniform—After a packet is forwarded back to the SFF from the SF, the SFF uses the TTL value in the original packet minus 1 as the TTL in the newly encapsulated IPv6 header. · Pipe—After a packet is forwarded back to the SFF from the SF, the SFF uses the specified TTL value (ttl-value) minus 1 as the TTL in the newly encapsulated IPv6 header.
TTL value.	TTL value: · In Uniform TTL processing mode, a hyphen (-) is displayed. · In Pipe TTL processing mode, the configured TTL value is displayed.
Diffserv mode	Differentiated services (Diffserv) mode: · Uniform—In the inbound direction (SF to SFF), the SFF maps the carried IP or DSCP value to the priority in the newly encapsulated IPv6 header. The packet color will not be changed. In the outbound direction (SFF to SF), the SFF removes the outer IPv6 and SRH header. Then it maps the priority in the outer IPv6 header to the IP or DSCP value in the original packet. The packet color will not be changed. · Pipe—In the inbound direction (SF to SFF), the SFF ignores the carried IP or DSCP value. It uses the configured service-class value as the priority in the newly encapsulated IPv6 header, and the configured color value as the color for the new packet. In SRv6 networks, QoS scheduling is performed for packets based on the priority and color values. In the outbound direction (SFF to SF), the SFF removes the outer IPv6 and SRH header without modifying the IP or DSCP value and color in the original packet.
Service class	Diffserv class of the service chain. Values include the following in ascending priority order: · be · af1 · af2 · af3 · af4 · ef · cs6 · cs7 If no Diffserv class is configured, a hyphen (-) is displayed.
Color	Packet color. Values include the following in ascending order of packet loss probability: · green—Indicates packet loss probability 0. · yellow—Indicates packet loss probability 1. · red—Indicates packet loss probability 2. If no Diffserv class is configured, a hyphen (-) is displayed.
Cache-SL	Segment left value, which indicates the number of nodes to access in the SID list before arrival at the final destination.
Cache list	SID list that needs to be encapsulated after the SFF receives the packet from the SF.
Forward no-bypass	Status of the No-Bypass feature for the SRv6 service chain in static proxy mode. · Enabled. · Disabled.
Encapsulation count	Number of equal-cost paths between the SFF and SF.
Out-Interface	Outbound interface for the SFF to forward packets to the SF.
In-Interface	Inbound interface for the SFF to receive packets from the SF.
Out-S-VLAN	Outer VLAN ID for SFF-to-SF (outbound) packets.
Out-C-VLAN	Inner VLAN ID for SFF-to-SF (outbound) packets.
In-S-VLAN	Outer VLAN ID for SF-to-SFF (inbound) packets.
In-C-VLAN	Inner VLAN ID for SF-to-SFF (inbound) packets.
Dest MAC	Destination MAC address encapsulated for packets from the SF to the remote backup SFF in Layer 2 forwarding.
Symmetric-index	Index that identifies a VM used for forwarding bidirectional traffic when multiple VMs exist on the SF. Both inbound and outbound traffic with the same source and destination addresses will traverse the same VM.

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display segment-routing ipv6 local-sid statistics

Use display segment-routing ipv6 local-sid statistics to display statistics about SRv6 SIDs allocated for each protocol.

Syntax

display segment-routing ipv6 local-sid statistics [ locator [ locator-name ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

locator: Displays statistics about SRv6 SIDs allocated for each protocol by locator. If you do not specify this keyword, the command does not display statistics about SRv6 SIDs allocated for each protocol by locator.

locator-name: Specifies a locator by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a locator, the command displays statistics about SRv6 SIDs for all locators.

Examples

# Display statistics about SRv6 SIDs allocated for each protocol (not by locator).

<Sysname> display segment-routing ipv6 local-sid statistics

Total SIDs: 0

Funtion SIDMGR IS-IS OSPFv3 BGP L2VPN VSRP NAT Total

End 0 0 0 0 0 0 0 0

End.X 0 0 0 0 0 0 0 0

End.COC32 0 0 0 0 0 0 0 0

End.XCOC32 0 0 0 0 0 0 0 0

End.COCNONE 0 0 0 0 0 0 0 0

End.XCOCNONE 0 0 0 0 0 0 0 0

End.DT4 0 0 0 0 0 0 0 0

End.DT46 0 0 0 0 0 0 0 0

End.DT6 0 0 0 0 0 0 0 0

End.DX4 0 0 0 0 0 0 0 0

End.DX6 0 0 0 0 0 0 0 0

End.DX2 0 0 0 0 0 0 0 0

End.DX2L 0 0 0 0 0 0 0 0

End.DT2M 0 0 0 0 0 0 0 0

End.DT2U 0 0 0 0 0 0 0 0

End.DT2UL 0 0 0 0 0 0 0 0

End.M 0 0 0 0 0 0 0 0

End.OP 0 0 0 0 0 0 0 0

End.T 0 0 0 0 0 0 0 0

End.AS 0 0 0 0 0 0 0 0

End.R 0 0 0 0 0 0 0 0

Funtion SRP BIER MVPN Total

End.B6Encaps 0 0 0 0

End.B6EncapsRed 0 0 0 0

End.B6Insert 0 0 0 0

End.B6InsertRed 0 0 0 0

End.BIER 0 0 0 0

Src.DT4 0 0 0 0

Src.DT6 0 0 0 0

End.RGB 0 0 0 0

End.XSID 0 0 0 0

# Display statistics about SRv6 SIDs allocated for each protocol from locator abc.

<Sysname> display segment-routing ipv6 local-sid statistics locator abc

Locator: abc

Total SIDs: 0

Funtion SIDMGR IS-IS OSPFv3 BGP L2VPN VSRP NAT Total

End 0 0 0 0 0 0 0 0

End.X 0 0 0 0 0 0 0 0

End.COC32 0 0 0 0 0 0 0 0

End.XCOC32 0 0 0 0 0 0 0 0

End.COCNONE 0 0 0 0 0 0 0 0

End.XCOCNONE 0 0 0 0 0 0 0 0

End.DT4 0 0 0 0 0 0 0 0

End.DT46 0 0 0 0 0 0 0 0

End.DT6 0 0 0 0 0 0 0 0

End.DX4 0 0 0 0 0 0 0 0

End.DX6 0 0 0 0 0 0 0 0

End.DX2 0 0 0 0 0 0 0 0

End.DX2L 0 0 0 0 0 0 0 0

End.DT2M 0 0 0 0 0 0 0 0

End.DT2U 0 0 0 0 0 0 0 0

End.DT2UL 0 0 0 0 0 0 0 0

End.M 0 0 0 0 0 0 0 0

End.OP 0 0 0 0 0 0 0 0

End.T 0 0 0 0 0 0 0 0

End.AS 0 0 0 0 0 0 0 0

End.R 0 0 0 0 0 0 0 0

Funtion SRP BIER MVPN Total

End.B6Encaps 0 0 0 0

End.B6EncapsRed 0 0 0 0

End.B6Insert 0 0 0 0

End.B6InsertRed 0 0 0 0

End.BIER 0 0 0 0

Src.DT4 0 0 0 0

Src.DT6 0 0 0 0

End.RGB 0 0 0 0

Table 10 Command output

Field	Description
Total SIDs	Total number of SRv6 SIDs. If you specify a locator, this field displays the total number of SRv6 SIDs that belong to the specified locator.
Locators	Locator name.
Function	SRv6 SID type: · End. · End.X. · End.COC32 · End.XCOC32 · End.COCNONE · End.XCOCNONE · End.DT4. · End.DT46. · End.DT6. · End.DX4. · End.DX6. · End.DX2. · End.DX2L. · End.DT2M. · End.DT2U. · End.DT2UL. · End.M. · End.OP. · End.R. · End.T. · End.AS. · End.B6Encaps. · End.B6EncapsRed. · End.B6Insert. · End.B6InsertRed. · End.BIER. · Src.DT4. · Src.DT6. · End.RGB.
SIDMGR	Static SIDs.
IS-IS	SRv6 SIDs allocated for IS-IS.
OSPFv3	SRv6 SIDs allocated for OSPFv3.
BGP	SRv6 SIDs allocated for BGP.
L2VPN	SRv6 SIDs allocated for L2VPN.
VSRP	SRv6 SIDs allocated for VSRP.
NAT	SRv6 SIDs allocated for NAT.
SRP	BSIDs dynamically allocated for SRv6 TE policies.
BIER	SRv6 SIDs allocated for BIER.
MVPN	SRv6 SIDs allocated for MVPN.
Total	Total number for a type of SRv6 SIDs.

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display segment-routing ipv6 locator

Use display segment-routing ipv6 locator to display SRv6 locator information.

Syntax

display segment-routing ipv6 locator [ locator-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

locator-name: Specifies a locator by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a locator, this command displays information about all locators.

Examples

# Display information about all locators. (The coc-both keyword is not specified when you configure locators.)

<Sysname> display segment-routing ipv6 locator

Locator configuration table

Locator name : test1 Flag(A) : 0

IPv6 prefix : 100:200:DB8:ABCD:: Prefix length : 64

Static length : 8 Args length : 16

Common prefix length: 0

Algorithm : 0

Auto SID start : 100:200:DB8:ABCD::100:0

Auto SID end : 100:200:DB8:ABCD:FFFF:FFFF:FFFF:0

Static SID start : 100:200:DB8:ABCD::1:0

Static SID end : 100:200:DB8:ABCD::FF:0

Compressed Auto SID count : 0

Compressed Static SID count : 0

Non-compressed Auto SID count : 0

Non-compressed Static SID count: 0

# Display information about all locators. (The coc-both keyword is specified when you configure locators.)

<Sysname> display segment-routing ipv6 locator

Locator configuration table

Locator name : test1 Flag(A) : 0

IPv6 prefix : 100:200:DB8:ABCD:: Prefix length : 64

Static length : 8 Args length : 16

Common prefix length: 48 Non-compressed static length : 16

Algorithm : 0

Compressed auto SID start : 100:200:DB8:ABCD:100::

Compressed auto SID end : 100:200:DB8:ABCD:FFFF::

Compressed static SID start : 100:200:DB8:ABCD:1::

Compressed static SID end : 100:200:DB8:ABCD:FF::

Non-compressed auto SID start : 100:200:DB8:ABCD:0:1::

Non-compressed auto SID end : 100:200:DB8:ABCD:0:FFFF:FFFF:0

Non-compressed static SID start: 100:200:DB8:ABCD::1:0

Non-compressed static SID end : 100:200:DB8:ABCD::FFFF:0

Reserved SID start : N/A

Reserved SID count : 0

Reserved SID end : N/A

Compressed Auto SID count : 0

Compressed Static SID count : 0

Non-compressed Auto SID count : 0

Non-compressed Static SID count: 0

Table 11 Command output

Field	Description
Algorithm	Algorithm ID: · 0—SPF algorithm. · 128 to 255—Flex-Algo algorithm.
Flag(A)	Anycast locator flag (A-bit). If A-bit is set, the locator is an anycast locator.
IPv6 prefix	IPv6 address prefix of the locator.
Prefix length	Prefix length of the locator.
Static length	Static length of the locator.
Args length	Argument length.
Common prefix length	Common prefix length of the locator.
Non-compressed static length	Static length of the locator for non-compressible SRv6 SIDs.
Auto SID start	Start dynamic SRv6 SID. If no dynamic SRv6 SIDs exist, this field displays N/A.
Auto SID end	End dynamic SRv6 SID. If no dynamic SRv6 SIDs exist, this field displays N/A.
Static SID start	Start static SRv6 SID. If no static SRv6 SIDs exist, this field displays N/A.
Static SID end	End static SRv6 SID. If no static SRv6 SIDs exist, this field displays N/A.
Compressed auto SID start	Start value for compressible dynamic SRv6 SIDs. If no compressible dynamic SRv6 SIDs exist, this field displays N/A.
Compressed auto SID end	End value for compressible dynamic SRv6 SIDs. If no compressible dynamic SRv6 SIDs exist, this field displays N/A.
Compressed static SID start	Start value for compressible static SRv6 SIDs. If no compressible static SRv6 SIDs exist, this field displays N/A.
Compressed static SID end	End value for compressible static SRv6 SIDs. If no compressible static SRv6 SIDs exist, this field displays N/A.
Non-compressed auto SID start	Start value for non-compressible dynamic SRv6 SIDs. If no non-compressible dynamic SRv6 SIDs exist, this field displays N/A.
Non-compressed auto SID end	End value for non-compressible dynamic SRv6 SIDs. If no non-compressible dynamic SRv6 SIDs exist, this field displays N/A.
Non-compressed static SID start	Start value for non-compressible static SRv6 SIDs. If no non-compressible static SRv6 SIDs exist, this field displays N/A.
Non-compressed static SID end	End value for non-compressible static SRv6 SIDs. If no non-compressible static SRv6 SIDs exist, this field displays N/A.
Reserved SID start	Start value for reserved SRv6 SIDs. If no start value is specified for SRv6 SID reservation, this field displays N/A.
Reserved SID count	Number of reserved SRv6 SIDs.
Reserved SID end	End value for reserved SRv6 SIDs. If no end value is specified for SRv6 SID reservation, this field displays N/A.
Compressed Auto SID count	Number of dynamic compressible SRv6 SIDs.
Compressed Static SID count	Number of static compressible SRv6 SIDs.
Non-compressed Auto SID count	Number of dynamic non-compressible SRv6 SIDs.
Non-compressed Static SID count	Number of static non-compressible SRv6 SIDs.

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display segment-routing ipv6 locator-statistics

Use display segment-routing ipv6 locator-statistics to display SRv6 locator configuration and statistics about allocated SRv6 SIDs in locators.

Syntax

display segment-routing ipv6 locator-statistics [ locator-name ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

locator-name: Specifies a locator by its name, a case-sensitive string of 1 to 31 characters. If you do not specify a locator, this command displays SRv6 locator configuration and statistics about allocated SRv6 SIDs in all locators.

Examples

# Display SRv6 locator configuration and statistics about allocated SRv6 SIDs in all locators.

<Sysname> display segment-routing ipv6 locator-statistics

Locator configuration table

Total Locators: 1 Total SIDs: 1

Name IPv6 prefix/Prefix length CDyn/CStatic/Dyn/Static Flag Algo

abc 100:1::/64 0 /0 /0 /1 0 0

Table 12 Command output

Field	Description
Total Locators	Total number of locators.
Total SIDs	Total number of SIDs that have been allocated in the locators.
Name	Locator name.
IPv6 prefix/Prefix length	Locator prefix and prefix length.
CDyn/CStatic/Dyn/Static	Number of dynamic compressible SRv6 SIDs, number of static compressible SRv6 SIDs, number of dynamic non-compressible SRv6 SIDs, and number of static non-compressible SRv6 SIDs.
Flag	Anycast locator flag (A flag). The value is 1 if this flag is set, which indicates that the locator is an anycast locator.
Algo	Algorithm ID: · 0—SPF algorithm. · 128 to 255—Flex-Algo algorithm.

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display segment-routing ipv6 remote-sid

Use display segment-routing ipv6 remote-sid to display remote SRv6 SID information .

Syntax

display segment-routing ipv6 remote-sid { end-dx2 | end-dx2l } [ sid ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

end-dx2: Specifies End.DX2 SIDs.

end-dx2l: Specifies End.DX2L SIDs.

sid: Specifies an SRv6 SID. If you do not specify an SRv6 SID, this command displays information about all remote SRv6 SIDs of the specified type.

Examples

# Display information about all remote SRv6 SIDs of the End.DX2 type.

<Sysname> display segment-routing ipv6 remote-sid end-dx2

Remote SID forwarding table (End.DX2)

Total remote SIDs: 1

SID : 100:1::100/64

Function type : End.DX2 Flavor : PSP

Xconnect-group: abc Connection : abc

VSI name : Service ID : 0

Interface :

Remote locator name: abc Allocation type: Static

Owner : L2VPN State : Active

Create Time : Jan 27 09:59:34.541 2022

# Display information about all remote SRv6 SIDs of the End.DX2L type.

<Sysname> display segment-routing ipv6 remote-sid end-dx2l

Remote SID forwarding table (End.DX2L)

Total remote SIDs: 1

SID : 200:1::100/64

Function type : End.DX2L Flavor : PSP

Xconnect-group: vpna Connection : a

VSI name : Service ID : 0

Interface :

Remote locator name: bbb Allocation type: Static

Owner : L2VPN State : Active

Create Time : Nov 15 20:36:04.528 2021

Table 13 Command output

Field	Description
SID	SRv6 SID.
Function type	SRv6 SID type: · End.DX2. · End.DX2L.
Flavor	SRv6 SID flavor type: · PSP—The penultimate SRv6 node removes the SRH. · NOPSP—The penultimate SRv6 node does not remove the SRH.
Xconnect group	Cross-connect group name.
Connection	Cross-connect name.
VSI name	VSI name.
Service ID	Ethernet service instance ID. If no Ethernet service instance ID exists, this field displays 0.
Interface	Output interface. If no output interface exists, this field displays 0.
Allocation type	SID allocation type: · Static—Manually configured. · Dynamic—Dynamically allocated.
Owner	Protocol that applies for the SID: L2VPN.
State	SID state: · Active. · Inactive.
Create Time	SID creation time.

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end-x update-delay

Use end-x update-delay to configure the delay time to flush static End.X SIDs to the FIB.

Use undo end-x update-delay to restore the default.

Syntax

end-x update-delay delay-time

undo end-x update-delay

Default

Static End.X SIDs are not delayed to flush to the FIB.

Views

SRv6 view

Predefined user roles

network-admin

Parameters

delay-time: Sets the delay time to flush static End.X SIDs to the FIB, in milliseconds. The value range is 0 to 600000.

Usage guidelines

When a neighbor fails, the interface connected to that neighbor goes down. The End.X SID associated with the interface cannot take effect. When the neighbor recovers, the interface also comes up and the static End.X SID associated with the interface takes effect. Because route convergence has not finished, the local device cannot forward packets according to the route entry of the static End.X SID. As a result, packet forwarding failure or packet loss occurs. (Dynamic End.X SIDs do not have this issue, because they are flushed to the FIB after route convergence is completed.) To avoid this issue, use this command to delay flushing the static End.X SID associated with the interface to the FIB. During the delay time, the local device does not forward traffic through the link attached to the interface. The delay configuration avoids packet loss within the delay time.

Examples

# Set the delay time to flush static End.X SIDs to the FIB to 60 milliseconds.

<Sysname> system-view

[Sysname] segment-routing ipv6

[Sysname-segment-routing-ipv6] end-x update-delay 60

fast-reroute microloop-avoidance enable (IS-IS IPv6 address family)

Use fast-reroute microloop-avoidance enable to enable FRR microloop avoidance.

Use undo fast-reroute microloop-avoidance enable to disable FRR microloop avoidance.

Syntax

fast-reroute microloop-avoidance enable [ level-1 | level-2 ]

undo fast-reroute microloop-avoidance enable [ level-1 | level-2 ]

Default

FRR microloop avoidance is disabled.

Views

IS-IS IPv6 unicast address family view

Predefined user roles

network-admin

Parameters

level-1: Specifies FRR microloop avoidance for IS-IS Level-1.

level-2: Specifies FRR microloop avoidance for IS-IS Level-2.

Usage guidelines

Use this command only on the source node.

On an network configured with TI-LFA FRR, if a node or link fails, traffic will be switched to the backup path calculated by TI-LFA. However, if a device along the backup path has not finished route convergence, traffic will be looped between the device and the source node until the device finishes route convergence. The source node is the node prior to the node or link that failed.

To resolve this issue, configure this feature on a node enabled with TI-LFA FRR. FRR microloop avoidance first switches traffic to the backup path calculated by TI-LFA to avoid packet loss after a node or link failure on the optimal path. Then, that node starts an FRR microloop avoidance RIB-update-delay timer configured by the fast-reroute microloop-avoidance rib-update-delay command after it finishes route convergence. The node performs the following operations only after all nodes on the backup path finish route convergence and the timer times out:

· Issues the forwarding path after route convergence to the FIB.

· Switches traffic from the backup path calculated by TI-LFA to the forwarding path after route convergence.

If you configure both the segment-routing microloop-avoidance enable and fast-reroute microloop-avoidance enable commands, FRR microloop avoidance takes precedence over SR microloop avoidance. The FRR microloop avoidance RIB-update-delay timer and SR microloop avoidance RIB-update-delay timer are started for the two features, respectively. The following situations exist depending on the configuration of the two timers:

· If the FRR microloop avoidance RIB-update-delay timer is equal to or greater than the SR microloop avoidance RIB-update-delay timer, traffic is switched to the post-convergence path immediately when the former timer times out.

· If the FRR microloop avoidance RIB-update-delay timer is larger than the SR microloop avoidance RIB-update-delay timer, traffic is switched to the post-convergence path until after the latter timer times out.

If you do not specify the level-1 or level-2 keyword, the command enables or disables FRR microloop avoidance on all IS-IS levels.

Examples

# Enable FRR microloop avoidance for IS-IS process 1.

<Sysname> system-view

[Sysname] isis 1

[Sysname-isis-1] address-family ipv6

[Sysname-isis-1-ipv6] fast-reroute microloop-avoidance enable

Related commands

fast-reroute microloop-avoidance rib-update-delay (IS-IS IPv6 address family)

segment-routing microloop-avoidance enable

fast-reroute microloop-avoidance enable (OSPFv3 view)

Use fast-reroute microloop-avoidance enable to enable FRR microloop avoidance for OSPFv3.

Use undo fast-reroute microloop-avoidance enable to disable FRR microloop avoidance for OSPFv3.

Syntax

fast-reroute microloop-avoidance enable

undo fast-reroute microloop-avoidance enable

Default

FRR microloop avoidance is disabled for OSPFv3.

Views

OSPFv3 view

Predefined user roles

network-admin

Usage guidelines

Use this command only on the source node.

· Issues the forwarding path after route convergence to the FIB.

· Switches traffic from the backup path calculated by TI-LFA to the forwarding path after route convergence.

Examples

# Enable FRR microloop avoidance for OSPFv3 process 1.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] fast-reroute microloop-avoidance enable

Related commands

fast-reroute microloop-avoidance rib-update-delay (OSPFv3 view)

segment-routing microloop-avoidance enable

fast-reroute microloop-avoidance rib-update-delay (IS-IS IPv6 address family)

Use fast-reroute microloop-avoidance rib-update-delay to set the FRR microloop avoidance RIB-update-delay time.

Use undo fast-reroute microloop-avoidance rib-update-delay to restore the default.

Syntax

fast-reroute microloop-avoidance rib-update-delay delay-time [ level-1 | level-2 ]

undo fast-reroute microloop-avoidance rib-update-delay [ level-1 | level-2 ]

Default

The FRR microloop avoidance RIB-update-delay time is 5000 ms.

Views

IS-IS IPv6 unicast address family view

Predefined user roles

network-admin

Parameters

delay-time: Specifies the FRR microloop avoidance RIB-update-delay time in milliseconds. The value range is 1 to 60000.

level-1: Specifies the FRR microloop avoidance RIB-update-delay time for IS-IS Level-1.

level-2: Specifies the FRR microloop avoidance RIB-update-delay time for IS-IS Level-2.

Usage guidelines

Use this command only on the source node.

If you do not specify the level-1 or level-2 keyword, the command sets the FRR microloop avoidance RIB-update-delay time for all IS-IS levels.

Examples

# Set the FRR microloop avoidance RIB-update-delay time to 6000 ms for Level-1 of IS-IS process 1.

<Sysname> system-view

[Sysname] isis 1

[Sysname-isis-1] address-family ipv6

[Sysname-isis-1-ipv6] fast-reroute microloop-avoidance rib-update-delay 6000 level-1

Related commands

fast-reroute microloop-avoidance (IS-IS IPv6 address family)

fast-reroute microloop-avoidance rib-update-delay (OSPFv3 view)

Use fast-reroute microloop-avoidance rib-update-delay to set the FRR microloop avoidance RIB-update-delay time.

Use undo fast-reroute microloop-avoidance rib-update-delay to restore the default.

Syntax

fast-reroute microloop-avoidance rib-update-delay delay-time

undo fast-reroute microloop-avoidance rib-update-delay

Default

The FRR microloop avoidance RIB-update-delay time is 5000 ms.

Views

OSPFv3 view

Predefined user roles

network-admin

Parameters

delay-time: Specifies the FRR microloop avoidance RIB-update-delay time in milliseconds. The value range is 1 to 60000.

Usage guidelines

Use this command only on the source node.

Examples

# Set the FRR microloop avoidance RIB-update-delay time to 6000 ms for OSPFv3 process 1.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] fast-reroute microloop-avoidance rib-update-delay 6000

Related commands

fast-reroute microloop-avoidance (OSPFv3 view)

fast-reroute ti-lfa

Use fast-reroute ti-lfa to enable Topology-Independent Loop-free Alternate Fast Re-Route (TI-LFA FRR).

Use undo fast-refroute ti-lfa to disable TI-LFA FRR.

Syntax

In IS-IS IPv6 unicast address family view:

fast-reroute ti-lfa [ per-prefix ] [ route-policy route-policy-name | host ] [ level-1 | level-2 ]

undo fast-reroute ti-lfa [ level-1 | level-2 ]

In OSPFv3 process view:

fast-reroute ti-lfa [ per-prefix ] [ route-policy route-policy-name | host ]

undo fast-reroute ti-lfa

Default

TI-LFA FRR is disabled.

Views

IS-IS IPv6 unicast address family view

OSPFv3 process view

Predefined user roles

network-admin

Parameters

per-prefix: Calculates backup information for each advertising source of a route. Specify this keyword only if routes are advertised by multiple sources. If you do not specify this keyword, the device calculates backup information for each route.

route-policy route-policy-name: Enables TI-LFA FRR for prefixes identified by the routing policy. The route-policy-name argument specifies a routing policy by its name, a case-sensitive string of 1 to 63 characters.

host: Enables TI-LFA for host routes.

level-1: Specifies TI-LFA FRR for IS-IS Level-1.

level-2: Specifies TI-LFA FRR for IS-IS Level-2.

Usage guidelines

TI-LFA FRR provides link and node protection for SR tunnels. When a link or node fails, TI-LFA FRR switches the traffic to the backup path to ensure continuous data forwarding.

Before configuring TI-LFA FRR on a level, you must execute the fast-reroute lfa command in IS-IS IPv6 unicast address family view or OSPFv3 process view to enable LFA FRR on that level. TI-LFA FRR takes effect only after you enable LFA FRR.

If you do not specify the route-policy route-policy-name option or the host keyword, the device calculates backup information for all routes.

If you do not specify the level-1 or level-2 keyword, the command applies to both IS-IS levels.

Examples

# Enable TI-LFA FRR for IS-IS process 1 and calculate backup information for all routes.

<Sysname> system-view

[Sysname] isis 1

[Sysname-isis-1] address-family ipv6

[Sysname-isis-1-ipv6] fast-reroute ti-lfa

# Enable TI-LFA FRR for OSPFv3 process 1 and calculate backup information for all routes.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] fast-reroute ti-lfa

Related commands

fast-reroute (IS-IS in Layer 3—IP Routing Command Reference)

fast-reroute (OSPFv3 in Layer 3—IP Routing Command Reference)

route-policy (Layer 3—IP Routing Command Reference)

isis ipv6 fast-reroute ti-lfa disable

Use isis ipv6 fast-reroute ti-lfa disable to prevent an IS-IS interface from participating in TI-LFA calculation.

Use undo isis ipv6 fast-reroute ti-lfa disable to allow an IS-IS interface to participate in TI-LFA calculation.

Syntax

isis ipv6 fast-reroute ti-lfa disable [ level-1 | level-2 ]

undo isis ipv6 fast-reroute ti-lfa disable [ level-1 | level-2 ]

Default

An IS-IS interface participates in TI-LFA calculation.

Views

Interface view

Predefined user roles

network-admin

Parameters

level-1: Specifies TI-LFA calculation on IS-IS Level-1.

level-2: Specifies TI-LFA calculation on IS-IS Level-2.

Usage guidelines

Disable the output interface to the primary next hop from participating in TI-LFA calculation.

If you do not specify the level-1 or level-2 keyword, this command applies to both IS-IS levels.

Examples

# Prevent Ten-GigabitEthernet2/0/0 from participating in TI-LFA calculation.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 2/0/0

[Sysname-Ten-GigabitEthernet2/0/0] isis ipv6 fast-reroute ti-lfa disable

Related commands

fast-reroute ti-lfa

locator

Use locator to create an SRv6 locator and enter its view, or enter the view of an existing SRv6 locator.

Use undo locator to delete an SRv6 locator.

Syntax

locator locator-name [ ipv6-prefix ipv6-address prefix-length [ args args-length | static static-length ] * ]

locator locator-name [ ipv6-prefix ipv6-address prefix-length common-prefix common-prefix-length coc32 [ args args-length | static static-length ] * ]

locator locator-name [ ipv6-prefix ipv6-address prefix-length common-prefix common-prefix-length coc-both [ non-compress-static non-compress-static-length ] [ args args-length | static static-length ] * ]

undo locator locator-name

Default

No SRv6 locators exist.

Views

SRv6 view

Predefined user roles

network-admin

Parameters

locator-name: Specifies a locator name, a case-sensitive string of 1 to 31 characters.

ipv6-prefix ipv6-address prefix-length: Specifies an IPv6 address prefix and the prefix length, which represent the value and length for the locator in SRv6 SIDs, respectively. The ipv6-address argument represents the IPv6 address prefix. The prefix-length argument represents the prefix length, in the range of 32 to 120. The IPv6 address prefix cannot be an IPv4-compatible IPv6 address.

args args-length: Specifies an argument length. The value range for the args-length argument depends on the value of the prefix-length argument and varies by device model. If you do not specify an argument length, the argument length is 0.

static static-length: Specifies the static length. The value range for the static-length argument varies by the value of the prefix-length argument and varies by device model. If you do not specify a static length, the static length is 0.

common-prefix common-prefix-length: Specifies the G-SID common prefix length. The value range for the common-prefix-length argument varies by the value of the prefix-length argument and varies by device model. If you do not specify a G-SID common prefix length, the common prefix length is 0.

coc32: Enables 32-bit G-SID compression.

coc-both: Enables the locator to allocate both compressible and non-compressible SRv6 SIDs.

non-compress-static non-compress-static-length: Specifies a static length for non-compressible SRv6 SIDs. If you do not specify a static length, the static length for non-compressible SRv6 SIDs is 0.

Usage guidelines

Locators are divided into the following types according to the configuration method:

· COC32 locator—To create a COC32 locator, specify the coc32 keyword in this command.

· COC-both locator—To create a COC-both locator, specify the coc-both keyword in this command.

· Common locator—To create a common locator, do not specify the coc32 or coc-both keyword in this command.

The locator command is used not only for configuring the value and length for the locator in SRv6 SIDs but also for planning the length of the Function, Arguments, and MBZ fields. All SRv6 SIDs are allocated by the locator command. According to whether compression is supported, configure the parameters differently for SRv6 SIDs. For more information, see SRv6 in Segment Routing Configuration Guide.

If SRv6 compression is enabled, use the locator command to configure the G-SID common prefix length and specify the G-SID compression mode. Only the 32-bit G-SID compression mode is supported in the current software version. In this mode, a standard 128-bit SRv6 SID is compressed to a 32-bit G-SID.

If a static opcode has been configured, a routing protocol preferentially uses the static opcode to construct SRv6 SIDs. If no static opcode exists, the routing protocol dynamically allocates SRv6 SIDs.

By applying a locator to IGP and BGP, you can use IGP and BGP to advertise the SRv6 SIDs on the locator.

When you create a locator, you must specify an IPv6 address prefix, prefix length, and static length for the locator. When you enter the view of an existing SRv6 locator, you do not need to specify the IPv6 address prefix, prefix length, or static length of the locator.

Each locator must have a unique name.

Do not specify the same IPv6 address prefix and prefix length for different locators. In addition, the IPv6 address prefixes of different locators cannot overlap.

You cannot delete a locator if that locator has dynamic SRv6 SIDs that are being used.

You can change a COC-both locator to a common locator or vice versa without deleting the configured locator but directly editing the command parameters, as follows:

· Change a common locator to a COC-both locator by adding the common-prefix and non-compress-static parameters. Other parameters cannot be edited.

For example, assume you configure a common locator as locator test ipv6-prefix 100:1:: 80 static 8 args 8. You can change the locator to a COC-both locator by executing locator test ipv6-prefix 100:1:: 80 common-prefix 64 coc-both non-compress-static 8 static 8 args 8.

· Change a COC-both locator to a common locator by deleting the common-prefix and non-compress-static parameters. Other parameters cannot be edited.

For example, assume you configure a COC-both locator as locator test ipv6-prefix 100:1:: 80 common-prefix 64 coc-both non-compress-static 8 static 8 args 8. You can change the locator to a common locator by executing locator test ipv6-prefix 100:1:: 80 static 8 args 8.

Examples

# Configure locator test1, setting the IPv6 address prefix to 100::, prefix length to 64, and static length to 32, and enter the SRv6 locator view of this locator.

<Sysname> system-view

[Sysname] segment-routing ipv6

[Sysname-segment-routing-ipv6] locator test1 ipv6-prefix 100:: 64 static 32

[Sysname-segment-routing-ipv6-locator-test1]

Related commands

opcode

srv6 compress enable

opcode

Use opcode to configure the opcode of SRv6 SIDs for a locator.

Use undo opcode to delete the opcode of SRv6 SIDs for a locator.

Syntax

opcode { opcode | hex hex-opcode } end

opcode { opcode | hex hex-opcode } end-x interface interface-type interface-number nexthop nexthop-ipv6-address

opcode { opcode | hex hex-opcode } end-coc32

opcode { opcode | hex hex-opcode } end-x-coc32 interface interface-type interface-number nexthop nexthop-ipv6-address

opcode { opcode | hex hex-opcode } end-coc-none

opcode { opcode | hex hex-opcode } end-x-coc-none interface interface-type interface-number nexthop nexthop-ipv6-address

opcode { opcode | hex hex-opcode } end-dt4 [ vpn-instance vpn-instance-name [ evpn | l3vpn-evpn ] ]

opcode { opcode | hex hex-opcode } end-dt46 [ vpn-instance vpn-instance-name [ evpn | l3vpn-evpn ] ]

opcode { opcode | hex hex-opcode } end-dt6 [ vpn-instance vpn-instance-name [ evpn | l3vpn-evpn ] ]

opcode { opcode | hex hex-opcode } end-dx2 xconnect-group group-name connection connection-name

opcode { opcode | hex hex-opcode } end-dx2 vsi vsi-name interface interface-type interface-number

opcode { opcode | hex hex-opcode } end-dx2l xconnect-group group-name connection connection-name

opcode { opcode | hex hex-opcode } end-dx2l vsi vsi-name interface interface-type interface-number

opcode { opcode | hex hex-opcode } end-dt2m vsi vsi-name

opcode { opcode | hex hex-opcode } end-dt2u vsi vsi-name

opcode { opcode | hex hex-opcode } end-dt2ul vsi vsi-name

opcode { opcode | hex hex-opcode } end-op

undo opcode { opcode | hex hex-opcode } { end | end-coc32 | end-coc-none | end-dt2m | end-dt2u | end-dt2ul | end-dt4 | end-dt46 | end-dt6 | end-dx2 | end-dx2l | end-dx4 | end-dx6 | end-op | end-x | end-x-coc32 | end-x-coc-none }

Default

No opcode exists.

Views

SRv6 locator view

Predefined user roles

network-admin

Parameters

opcode: Specifies an opcode. The value range varies by the settings of the locator command.

hex hex-opcode: Specifies an SRv6 SID in hexadecimal notation. The hex-opcode argument represents the SRv6 SID in hexadecimal notation.

end: Specifies the End type.

end-x: Specifies the End.X type.

end-coc32: Specifies the End (COC32) type.

end-x-coc32: Specifies the End.X (COC32) type.

end-coc-none: Specifies the End (COCNONE) type.

end-x-coc-none: Specifies the End.X (COCNONE) type.

end-dt4: Specifies the End.DT4 type.

end-dt46: Specifies the End.DT46 type.

end-dt6: Specifies the End.DT6 type.

end-dx2: Specifies the End.DX2 type.

end-dx2l: Specifies the End.DX2L type.

end-dt2m: Specifies the End.DT2M type.

end-dt2u: Specifies the End.DT2U type.

end-dt2ul: Specifies the End.DT2UL type.

end-op: Specifies the End.OP type.

interface interface-type interface-number: Specifies an output interface. For End.X, End.X(COC32), and End.X(COCNONE) SRv6 SIDs, if you specify a tunnel interface as the output interface, you can specify only tunnel interfaces in GRE over IPv4, IPsec over IPv4, or IPsec over IPv6 mode.

nexthop nexthop-ipv4-address: Specifies a next hop IPv4 address.

nexthop nexthop-ipv6-address: Specifies a next hop IPv6 address.

vpn-instance vpn-instance-name: Specifies the MPLS L3VPN instance to which the SRv6 SIDs belong. The vpn-instance-name argument is a case-sensitive string of 1 to 31 characters. The specified VPN instance must exist. If the SRv6 SIDs belong to the public network, do not specify this option.

evpn: Specifies EVPN routes. If you do not specify this keyword, the command specifies the SRv6 SIDs of VPNv4 or VPNv6 routes.

l3vpn-evpn: Specifies EVPN routes, VPNv4 routes, and VPNv6 routes.

xconnect-group group-name: Specifies the cross-connect group to which the SRv6 SIDs belong. The group-name argument represents the cross-connect group name, a case-sensitive string of 1 to 31 characters. The name cannot contain a hyphen (-). The specified cross-connect group must exist.

connection connection-name: Specifies the cross-connect to which the SRv6 SIDs belong. The connection-name argument represents the cross-connect name, a case-sensitive string of 1 to 20 characters. The name cannot contain a hyphen (-). The specified cross-connect must exist.

vsi vsi-name: Specifies the VSI to which the SRv6 SIDs belong. The vsi-name argument represents the VSI name, a case-sensitive string of 1 to 31 characters. The specified VSI must exist.

Usage guidelines

An SRv6 locator and its opcode and argument generate unique SRv6 SIDs. SRv6 SIDs form local SID forwarding table entries.

Use this command to configure the opcode of static SRv6 SIDs on a locator. The number of static SRv6 SIDs is determined by the static static-length option in the locator command.

If you specify the hex keyword in this command, and the length of the static portion in the locator to which the SID belongs is 32, you can use the IPv4 address format to specify the value of the SID, for example, opcode hex ::1.2.3.4 end. The configured opcode value is displayed in hexadecimal format.

To modify the opcode of static SRv6 SIDs on a locator, you must first delete the original opcode by using the undo opcode command.

To configure End (COC32) SRv6 SIDs or End.X (COC32) SRv6 SIDs, you must also perform the following tasks:

· Enable SRv6 compression by using the srv6 compress enable command.

· Configure the G-SID common prefix length by using the locator command.

To configure End (COCNONE) SRv6 SIDs or End.X (COCNONE) SRv6 SIDs, you must also perform the following tasks:

· Enable SRv6 compression by using the srv6 compress enable command.

· Configure the locator to allocate both compressible and non-compressible SRv6 SIDs.

End (COCNONE) and End.X (COCNONE) SIDs are allocated from the compressible SRv6 SID space. End (COCNONE) SIDs and End.X (COCNONE) SIDs have the same function as End SIDs and End.X SIDs, respectively.

For a COC-both locator, you can set the same opcode for the following SIDs:

· End SID and End (COC32) SID.

· End SID and End (COCNONE) SID.

· End.X SID and End.X (COC32) SID.

· End.X SID and End.X (COCNONE) SID.

Examples

# Configure End SRv6 SIDs, and set the opcode to 1.2.3.4.

<Sysname> system-view

[Sysname] segment-routing ipv6

[Sysname-segment-routing-ipv6] locator test ipv6-prefix 100:: 64 static 32

[Sysname-segment-routing-ipv6-locator-test] opcode hex ::1.2.3.4 end

Related commands

locator

segment-routing ipv6

srv6 compress enable

ospfv3 fast-reroute ti-lfa disable

Use ospfv3 fast-reroute ti-lfa disable to prevent an OSPFv3 interface from participating in TI-LFA calculation.

Use undo ospfv3 fast-reroute ti-lfa disable to allow an OSPFv3 interface to participate in TI-LFA calculation.

Syntax

ospfv3 fast-reroute ti-lfa disable [ instance instance-id ]

undo ospfv3 fast-reroute ti-lfa disable [ instance instance-id ]

Default

An OSPFv3 interface participates in TI-LFA calculation.

Views

Interface view

Predefined user roles

network-admin

Parameters

instance instance-id: Specifies an instance by its ID, in the range of 0 to 255. The default value is 0.

Examples

# Prevent Ten-GigabitEthernet2/0/0 from participating in TI-LFA calculation.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 2/0/0

[Sysname-Ten-GigabitEthernet2/0/0] ospfv3 fast-reroute ti-lfa disable

path-mtu

Use path-mtu to set the SRv6 path MTU.

Use undo path-mtu to restore the default.

Syntax

path-mtu mtu-value

undo path-mtu

Default

The SRv6 path MTU is 9600 bytes.

Views

SRv6 view

Predefined user roles

network-admin

Parameters

mtu-value: Sets the path MTU, in bytes. The value range for this argument is 1280 to 9600.

Usage guidelines

This command specifies the maximum bytes that can be contained in an SRv6 tunneled packets.

The transit nodes do not fragment SRv6 tunneled packets. If a packet is larger than the MTU of the output interface, the packet will be discarded. If the MTU is too small, the bandwidth is not sufficiently used. To address these issues, use this command to set an appropriate SRv6 path MTU.

Examples

# Set the SRv6 path MTU to 2000 bytes.

<Sysname> system-view

[Sysname] segment-routing ipv6

[Sysname-segment-routing-ipv6] path-mtu 2000

path-mtu reserved

Use path-mtu reserved to specify a reserved MTU for SRv6 path MTU.

Use undo path-mtu reserved to restore the default.

Syntax

path-mtu reserved [ reserved-value ]

undo path-mtu reserved

Default

No reserved MTU is specified for SRv6 path MTU.

Views

SRv6 view

Predefined user roles

network-admin

Parameters

reserved-value: Specifies an MTU value, in bytes. The value range for this argument is 0 to 8320.The default value is 72 bytes.

Usage guidelines

Use this command in the TI-LFA scenario. When packets are switched to the backup path after the primary path fails, the device reconstructs an IPv6 header and SRH for the packets. As a result, packet drop might occur because the packet size has exceeded the MTU. To resolve this issue, configure a reserved MTU on the source node to reserve bytes for adding a new SRH to SRv6 packets in case of primary path failure.

The size of SRv6 packets sent from the source node is controlled by the SRv6 path MTU, reserved MTU, and the IPv6 MTU of the physical output interface. The source node first finds the smaller value between the SRv6 path MTU and the IPv6 MTU of the physical output interface. Then, it uses the smaller value minus the reserved MTU as the effective MTU of the SRv6 packets.

For example, the SRv6 path MTU is 1600 and the reserved MTU is 100.

· If the IPv6 MTU of the physical output interface is equal to or greater then 1600, the effective MTU is the SRv6 path MTU minus the reserved MTU. In this example, the effective MTU is 1500.

· If the IPv6 MTU of the physical output interface is smaller than 1600, the effective MTU is the IPv6 MTU of the physical output interface minus the reserved MTU. For example, if the IPv6 MTU of the physical output interface is 1500, the effective MTU is 1400.

Examples

# Reserve 200 bytes for SRv6 path MTU.

<Sysname> system-view

[Sysname] segment-routing ipv6

[Sysname-segment-routing-ipv6] path-mtu reserved 200

reserved-sid-start

Use reserved-sid-start to reserve SRv6 SIDs.

Use undo reserved-sid-start to restore the default.

Syntax

reserved-sid-start sid-value count reserved-sid-count

undo reserved-sid-start

Default

No SRv6 SIDs are reserved.

Views

SRv6 locator view

Predefined user roles

network-admin

Parameters

sid-value: Specifies the start SRv6 SID for reservation.

count reserved-sid-count: Specifies the number of reserved SRv6 SIDs, in the range of 1 to 4294967295.

Usage guidelines

Application scenarios

When the device generates an SRv6 TE policy based on received SRv6 TE policy routes, it must assign a BSID to the SRv6 TE policy. Use this command to reserve SRv6 SIDs in COC-both locators. The reserve SRv6 SIDs can only be assigned to SRv6 TE policies as BSIDs.

Restrictions and guidelines

To use this command on a locator, you must enable the locator to allocate both compressible and non-compressible SRv6 SIDs. In addition, make sure all reserved SRv6 SIDs belong to the non-compressible dynamic SRv6 SID range for the locator. To obtain the range, use the display segment-routing ipv6 locator command.

When you allocate reserved SRv6 SIDs in the non-compressible dynamic SRv6 SID range, make sure the length of the reserved SRv6 SIDs does not exceed 32 bits (all 32 bits are set to 1). If the length exceeds 32 bits, the reserved SIDs might not be allocated correctly or might not be as expected. Assume that the start value for non-compressible dynamic SRv6 SIDs is 100:0:0:1::100 and the end value is 100::1:0:FFFF:FFFF:FFFF, the dynamic portion length is 40 bits, and the static portion length is 8 bits, without the Args portion. If the start SRv6 SID for reservation is 100::1:0:FF:FFFF:FFFE , the start SRv6 SID for reservation occupies 32 bits (all 32 bits are set to 1) in the nonocmpressible dynamic SRv6 SID range. If you set the number of reserved SRv6 SIDs is 20, no reserved SRv6 SIDs can be allocated.

Examples

# Configure the device to reserve 1000 SRv6 SIDs starting from 100:200:DB8:ABCD::1:0 for COC-both locator abc.

<Sysname> system-view

[Sysname] segment-routing ipv6

[Sysname-segment-routing-ipv6] locator abc ipv6-prefix 100:200:DB8:ABCD:: 64 common-prefix 48 coc-both non-compress-static 16 static 8

[Sysname-segment-routing-ipv6-locator-abc] reserved-sid-start 100:200:DB8:ABCD::1:0 count 1000

Related commands

display segment-routing ipv6 locator

router-id

Use router-id to configure the router ID for an IPv6 IS-IS process and enable IPv6 TE.

Use undo router-id to remove the router ID from an IPv6 IS-IS process and disable IPv6 TE.

Syntax

router-id ipv6-address

undo router-id

Default

No router ID is configured for an IPv6 IS-IS process and IPv6 TE is disabled.

Views

IS-IS IPv6 address family view

Predefined user roles

network-admin

Parameters

ipv6-address: Specifies an IPv6 router ID.

Usage guidelines

The IPv6 router ID must be unique in the IPv6 network.

The IPv6 router ID determines the source and destination addresses of the SRv6 tunnel distributed to the IGP. The destination address of the SRv6 tunnel must be the same as the IPv6 router ID of the destination node.

To avoid route calculation errors when multiple IS-IS P2P neighbors exist between two devices, use the advertise link-attributes or router-id command to enable IS-IS to advertise the IP address of the local interface connected to the peer to the neighbors.

Configuring an IPv6 route ID on a router also enables the IPv6 TE feature on that router. After the SRv6 tunnel participates in IGP route calculation, traffic can be directed to the SRv6 tunnel.

Examples

# Configure the router ID for an IPv6 IS-IS process and enable IPv6 TE.

<Sysname> system-view

[Sysname] isis 1

[Sysname-isis-1] cost-style wide

[Sysname-isis-1] address-family ipv6

[Sysname-isis-1-ipv6] router-id 1000::1

segment-routing ipv6 (system view)

Use segment-routing ipv6 to enable SRv6 and enter SRv6 view.

Use undo segment-routing ipv6 to disable SRv6.

Syntax

segment-routing ipv6

undo segment-routing ipv6

Default

SRv6 is disabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

After you execute this command, you can configure locators in SRv6 view. Then, you can configure the opcode portion in SRv6 locator view to generate local SID forwarding table entries.

You cannot disable SRv6 when a locator in SRv6 view has dynamic SRv6 SIDs that are being used.

Examples

# Enable SRv6 and enter SRv6 view.

<Sysname> system-view

[Sysname] segment-routing ipv6

[Sysname-segment-routing-ipv6]

segment-routing ipv6 admin-tag

Use segment-routing ipv6 admin-tag to configure the administrative tag value for SRv6 locators.

Use undo segment-routing ipv6 admin-tag to restore the default.

Syntax

segment-routing ipv6 admin-tag tag-value

undo segment-routing ipv6 admin-tag

Default

SRv6 locators do not carry an administrative tag value when they are advertised by IS-IS.

Views

IS-IS IPv6 address family view

Predefined user roles

network-admin

Parameters

tag-value: Specifies an administrative tag value, in the range of 1 to 4294967295.

Usage guidelines

Application scenarios

To import only specific SRv6 locators when the device imports IS-IS routes from different levels and areas or learns IS-IS routes from IS-IS neighbors, use this command to configure the administrative tag value for SRv6 locators. Then use the if-match tag command to filter SRv6 locators with different administrative tags.

Operating mechanism

With this feature configured, IS-IS will carry a 32-bit administrative tag sub-TLV with type 1 and value tag-value in the SRv6 locator TLV with type 27 when it advertises an SRv6 locator. This SRv6 locator is then marked through the administrative tag Sub-TLV.

Restrictions and guidelines

You can use this command to configure the same administrative tag value for all SRv6 locators advertised by IS-IS. Alternatively, you can use the segment-routing ipv6 locator command with the tag keyword specified in IS-IS IPv6 address family view to configure different administrative tag values for different SR6 locators.

For the same SRv6 locator, the administrative tag value specified using the segment-routing ipv6 locator command in IS-IS IPv6 address family view takes precedence. If no administrative tag value is specified using this command, the administrative tag value specified using the segment-routing ipv6 admin-tag command is applied.

This command is available only if the link cost style is wide, wide-compatible, or compatible.

Examples

# Configure administrative tag value 100 for SRv6 locators on IS-IS process 1.

<Sysname> system-view

[Sysname] isis 1

[Sysname-isis-1] address-family ipv6

[Sysname-isis-1-ipv4] segment-routing ipv6 admin-tag 100

Related commands

· if-match tag (Layer 3—IP Routing Command Reference)

· segment-routing ipv6 locator (IS-IS IPv6 address family view)

segment-routing ipv6 compatible locator-fixed-length

Use segment-routing ipv6 compatible locator-fixed-length to enable compatibility of the Locator field in SRv6 Locator TLVs with earlier drafts.

Use undo segment-routing ipv6 compatible locator-fixed-length to restore the default.

Syntax

segment-routing ipv6 compatible locator-fixed-length

undo segment-routing ipv6 compatible locator-fixed-length

Default

The Locator field in SRv6 locator LSAs is of variable length, with a maximum of 128 bytes.

Views

OSPFv3 view

Predefined user roles

network-admin

Usage guidelines

Application scenarios

To avoid interoperability issues caused by differences in the Locator field length in the SRv6 Locator TLV when a third-party device or an H3C device with an older software version interoperates with an H3C device with a newer software version, you can this command to have the new devices compatible with older draft standards.

Operating mechanism

In the OSPFv3 protocol, the SRv6 Locator TLV is carried in the SRv6 Locator LSA, used to announce the network segment and mask of the locator to which the SRv6 SID belongs, as well as the End SID related to that locator.

The length of the Locator field in SRv6 Locator TLVs is defined as variable in draft-ietf-lsr-ospfv3-srv6-extensions-12 and later drafts and can be up to 128 bits. The length of the Locator field can vary based on the configured locator segment length. However, the length is fixed at 128 bits in draft-ietf-lsr-ospfv3-srv6-extensions-11 and earlier drafts. For example, if you specify the prefix-length argument as 96 in the locator command, the default Locator field length is 96 bits and the remaining 32 bits are not required in the TLV when you apply the locator to OSPFv3 and advertise it. After this command is configured, the Locator field must be 128-bit long and the remaining 32 bits are all set to zero.

Restrictions and guidelines

For compatibility with draft-ietf-lsr-ospfv3-srv6-extensions-08 and earlier drafts, you must both this command and the segment-routing ipv6 private-srv6-extensions compatible command.

Examples

# Enable compatibility of the Locator field in SRv6 Locator TLVs with earlier drafts.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] segment-routing ipv6 compatible locator-fixed-length

Related commands

segment-routing ipv6 private-srv6-extensions compatible

segment-routing ipv6 end-x delete-delay

Use segment-routing ipv6 end-x delete-delay to enable dynamic End.X SID deletion delay and set the delay time.

Use undo segment-routing ipv6 end-x delete-delay to restore the default.

Syntax

segment-routing ipv6 end-x delete-delay [ time-value ]

undo segment-routing ipv6 end-x delete-delay

Default

Dynamic End.X SID deletion delay is enabled. The delay time is 1800 seconds.

Views

IS-IS IPv6 address family view

OSPFv3 process view

Predefined user roles

network-admin

Parameters

time-value: Sets the dynamic End.X SID deletion delay time in seconds, in the range of 0 to 2592000. The default value is 1800. If the value is 0, dynamic End.X SID deletion delay is disabled.

Usage guidelines

Packet loss occurs between OSPFv3 or IS-IS neighbors if the neighbors frequently delete and request dynamically allocated End.X SIDs for the links between them because of neighbor flapping. To resolve this issue, set a delay timer for deleting dynamically allocated End.X SIDs when the neighbors are disconnected. If the neighbors are still disconnected when the delay timer expires, the device deletes the dynamically allocated End.X SIDs.

The device always immediately deletes automatically allocated End.X SIDs without any delay in the following situations:

· The reset ospfv3 process command is executed.

· The reset isis all command is executed.

· Interfaces are deleted or removed. For example, an interface module is removed, or a subinterface or VLAN interface is deleted.

Examples

# Enable dynamic End.X SID deletion delay for IPv6 IS-IS process 1.

<Sysname> system-view

[Sysname] isis 1

[Sysname-isis-1] address-family ipv6

[Sysname-isis-1-ipv6] segment-routing ipv6 end-x delete-delay

# Enable dynamic End.X SID deletion delay for OSPFv3 process 1.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] segment-routing ipv6 end-x delete-delay

Related commands

reset isis all (Layer 3—IP Routing Command Reference)

reset ospfv3 process (Layer 3—IP Routing Command Reference)

segment-routing ipv6 locator (IS-IS IPv6 address family view)

Use segment-routing ipv6 locator to apply an SRv6 locator to an IPv6 IS-IS process.

Use undo segment-routing ipv6 locator to remove the specified SRv6 locator from an IPv6 IS-IS process.

Syntax

segment-routing ipv6 locator locator-name [ level-1 | level-2 ] [ auto-sid-coc32 [ additive ] | auto-sid-coc-both { all | coc32 | coc32-all | coc32-none } | auto-sid-disable ] [ cost cost-value ] [ tag tag-value ]

undo segment-routing ipv6 locator locator-name

Default

No SRv6 locators are applied to an IPv6 IS-IS process.

Views

IS-IS IPv6 address family view

Predefined user roles

network-admin

Parameters

locator-name: Specifies a locator by its name, a case-sensitive string of 1 to 31 characters.

level-1: Specifies the level-1 area.

level-2: Specifies the level-2 area.

auto-sid-coc32: Dynamically allocates a compressible End (COC32) or End.X (COC32) SRv6 SID from the specified COC32 locator.

additive: Dynamically allocates a common SRv6 SID from the specified COC32 locator in addition to the compressible SRv6 SID.

auto-sid-coc-both: Dynamically allocates the specified type of SRv6 SIDs from the specified COC-both locator.

· coc32: Specifies the compressible SRv6 SID type.

¡ For dynamic End SID allocation, IS-IS will allocate End (COC32) SIDs.

¡ For dynamic End.X SID allocation, IS-IS will allocate End.X (COC32) SIDs.

· coc32-none: Specifies the non-compressible End (COCNONE) and End.X (COCNONE) SRv6 SID types.

· coc32-all: Specifies both the compressible and non-compressible SRv6 SID types.

¡ For dynamic End SID allocation, IS-IS will allocate End (COC32) SIDs and End (COCNONE) SIDs.

¡ For dynamic End.X SID allocation, IS-IS will allocate End.X (COC32) SIDs and End.X (COCNONE) SIDs.

· all: Specifies the common, compressible, and non-compressible SRv6 SID types.

¡ For dynamic End SID allocation, IS-IS will allocate End (COC32) SIDs, End (COCNONE) SIDs, and End SIDs.

¡ For dynamic End.X SID allocation, IS-IS will allocate End.X (COC32) SIDs, End.X (COCNONE) SIDs, and End.X SIDs.

auto-sid-disable: Disables automatic SRv6 SID allocation, immediately releases allocated End SIDs, and releases allocated End.X SIDs in 1800 seconds. If you do not specify this keyword, the device allows dynamically allocated SRv6 SIDs. If static SRv6 SIDs are configured when automatic SRv6 SID allocation is enabled, the static SRv6 SIDs take precedence. If no static SRv6 SIDs are configured when automatic SRv6 SID allocation is enabled, the system dynamically allocates SRv6 SIDs.

cost cost-value: Specifies a cost value for locators, in the range of 1 to 16777215.

tag tag-value: Specifies an administrative tag value, in the range of 1 to 4294967295.

Usage guidelines

Application scenarios

For IS-IS neighbors in an IS-IS network to access each other through SRv6 SIDs, configure this feature.

Operating mechanism

With this command configured, IS-IS can advertise the specified locator and the SRv6 SIDs in the locator. After learning the locator and the SRv6 SIDs in the locator, the IS-IS neighbors generate route entries.

When multiple nodes use IS-IS to reference and advertise the same SRv6 locator, you can specify different cost values for the same SRv6 locator on different nodes for optimal route selection.

Restrictions and guidelines

If you do not specify a level, this command applies the specified locator to both level-1 and level-2 areas.

Use this command only when the cost style of IS-IS is wide, compatible, or wide-compatible.

Execute this command multiple times to apply multiple locators to an IPv6 IS-IS process so that the process can advertise multiple SRv6 SIDs.

The auto-sid-coc32 keyword takes effect only when the specified locator is a COC32 locator.

The auto-sid-coc-both { all | coc32 | coc32-all | coc32-none } keyword takes effect only when the specified locator is a COC-both locator.

You can use this command with the tag keyword specified to configure different administrative tag values for different SR6 locators. Alternatively, you can use the segment-routing ipv6 admin-tag command to configure the same administrative tag value for all SRv6 locators advertised by IS-IS.

Examples

# Apply locator abc to an IPv6 IS-IS process.

<Sysname> system-view

[Sysname] isis 1

[Sysname-isis-1] cost-style wide

[Sysname-isis-1] address-family ipv6

[Sysname-isis-1-ipv6] segment-routing ipv6 locator abc

Related commands

display segment-routing ipv6 locator

locator

segment-routing ipv6 locator (OSPFv3 process view)

Use segment-routing ipv6 locator to apply an SRv6 locator to an OSPFv3 process.

Use undo segment-routing ipv6 locator to remove the specified SRv6 locator from an OSPFv3 process.

Syntax

segment-routing ipv6 locator locator-name[ auto-sid-coc32 [ additive ] | auto-sid-coc-both { all | coc32 | coc32-all | coc32-none } | auto-sid-disable ]

undo segment-routing ipv6 locator locator-name

Default

No SRv6 locators are applied to an OSPFv3 process.

Views

OSPFv3 process view

Predefined user roles

network-admin

Parameters

locator-name: Specifies a locator by its name, a case-sensitive string of 1 to 31 characters.

auto-sid-coc32: Dynamically allocates a compressible End (COC32) or End.X (COC32) SRv6 SID from the specified COC32 locator.

· For dynamic End SID allocation, OSPFv3 will allocate End (COC32) SIDs.

· For dynamic End.X SID allocation, OSPFv3 will allocate End.X (COC32) SIDs.

additive: Dynamically allocates a common SRv6 SID from the specified COC32 locator in addition to the compressible SRv6 SID.

· For dynamic End SID allocation, OSPFv3 will allocate End (COC32) SIDs and End SIDs.

· For dynamic End.X SID allocation, OSPFv3 will allocate End.X (COC32) SIDs and End.X SIDs.

· If you do not specify the additive keyword, the device only dynamically allocates a compressible End (COC32) or End.X (COC32) SRv6 SID.

auto-sid-coc-both: Dynamically allocates the specified type of SRv6 SIDs from the specified COC-both locator.

· coc32: Specifies the compressible SRv6 SID type.

¡ For dynamic End SID allocation, OSPFv3 will allocate End (COC32) SIDs.

¡ For dynamic End.X SID allocation, OSPFv3 will allocate End.X (COC32) SIDs.

· coc32-none: Specifies the non-compressible End (COCNONE) and End.X (COCNONE) SRv6 SID types.

¡ For dynamic End SID allocation, OSPFv3 will allocate End (COCNONE) SIDs.

¡ For dynamic End.X SID allocation, OSPFv3 will allocate End.X (COCNONE) SIDs.

· coc32-all: Specifies both the compressible and non-compressible SRv6 SID types.

¡ For dynamic End SID allocation, OSPFv3 will allocate End (COC32) SIDs and End (COCNONE) SIDs.

¡ For dynamic End.X SID allocation, OSPFv3 will allocate End.X (COC32) SIDs and End.X (COCNONE) SIDs.

· all: Specifies the common, compressible, and non-compressible SRv6 SID types.

¡ For dynamic End SID allocation, OSPFv3 will allocate End (COC32) SIDs, End (COCNONE) SIDs, and End SIDs.

¡ For dynamic End.X SID allocation, OSPFv3 will allocate End.X (COC32) SIDs, End.X (COCNONE) SIDs, and End.X SIDs.

auto-sid-disable: Disables automatic SRv6 SID allocation. If you do not specify this keyword, the device allows dynamically allocated SRv6 SIDs. If static SRv6 SIDs are configured when automatic SRv6 SID allocation is enabled, the static SRv6 SIDs take precedence. If no static SRv6 SIDs are configured when automatic SRv6 SID allocation is enabled, the system dynamically allocates SRv6 SIDs.

Usage guidelines

Use this command to enable OSPFv3 to advertise SRv6 SIDs.

The auto-sid-coc32 keyword takes effect only when the specified locator is a COC32 locator.

The auto-sid-coc-both { all | coc32 | coc32-all | coc32-none } keyword takes effect only when the specified locator is a COC-both locator.

If you do not specify the auto-sid-coc32, auto-sid-coc-both, or auto-sid-disable keyword, OSPFv3 will allocate End SIDs and End.X SIDs from the specified common and COC32 locators.

As a best practice, execute the display system internal ospfv3 segment-routing ipv6 local command to view detailed information about allocated End SIDs and End.X SIDs for the COC-both type locator.

Execute this command multiple times to apply multiple locators to an OSPFv3 process so that the process can advertise multiple SRv6 SIDs.

Examples

# Apply locator abc to an OSPFv3 process.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] segment-routing ipv6 locator abc

Related commands

display segment-routing ipv6 locator

locator

segment-routing ipv6 private-srv6-extensions compatible

Use segment-routing ipv6 private-srv6-extensions compatible to configure the TLVs and flag bits in the OSPFv3 extensions for SRv6 to be compatible with the private protocol.

Use undo segment-routing ipv6 private-srv6-extensions compatible to restore the default.

Syntax

segment-routing ipv6 private-srv6-extensions compatible

undo segment-routing ipv6 private-srv6-extensions compatible

Default

The SRv6 Capabilities TLV type values, Sub TLV type values, and flag bits in OSPFv3 packets follow the definitions in draft-ietf-lsr-ospfv3-srv6-extensions-09.

Views

OSPFv3 view

Predefined user roles

network-admin

Usage guidelines

Operating mechanism

· By default, OSPFv3 protocol packets comply with the most recent OSPFv3 draft standard, and the TLVs and flag bits in the OSPFv3 extensions for SRv6 follow the definitions in draft-ietf-lsr-ospfv3-srv6-extensions-09. The values for SRv6 Capabilities TLV Type, End.X SID Sub-TLV Type, and LAN End.X SID Sub-TLV Type are 20, 31, and 32, respectively. The N flag of the PrefixOptions field in the SRv6 Locator TLV is in the third bit, and the AC flag is in the first bit. In this case, the TLV information in the OSPFv3 extensions for SRv6 is similar to that of other vendors, allowing interoperability.

· With this command configured, the TLVs and flag bits in the OSPFv3 extensions for SRv6 follow the definition in the private protocol. The values for SRv6 Capabilities TLV Type, End.X SID Sub-TLV Type, and LAN End.X SID Sub-TLV Type are 17, 11, and 12, respectively. The N flag of the PrefixOptions field in the SRv6 Locator TLV is in the first bit, and the AC flag is in the second bit. In this case, the TLV information in the OSPFv3 extensions for SRv6 is the same as that on devices that do not use the most recent software version, allowing interoperability.

Restrictions and guidelines

· For a successful advertisement of SRv6 locators and SRv6 SIDs, make sure OSPFv3 neighbors follow the same standard.

· If you configure both the segment-routing ipv6 sid-sub-tlv-type and segment-routing ipv6 private-srv6-extensions compatible commands, the End.X SID Sub-TLV Type and LAN End.X SID Sub-TLV Type values specified in the segment-routing ipv6 sid-sub-tlv-type command take precedence.

· After the segment-routing ipv6 private-srv6-extensions compatible command is configured, the End.X SID Sub-TLV type value is set to 11, which conflicts with the default value of OSPFv3 ASLA Sub-TLVs (11) defined in RFC 9492. This conflict causes the OSPFv3 Flex-Algo algorithm unusable. To avoid conflicts with existing standards, execute the segment-routing ipv6 sid-sub-tlv-type command to set an appropriate type value for End.X SID Sub-TLVs if multiple devices need to use the Flex-Algo algorithm in OSPFv3.

Examples

# Configure the TLVs and flag bits in the OSPFv3 extensions for SRv6 to be compatible with the private protocol.

<Sysname> system-view

[Sysname] opsfv3 1

[Sysname-ospfv3-1] segment-routing ipv6 private-srv6-extensions compatible

Related commands

· segment-routing ipv6 locator (OSPFv3 view)

· segment-routing ipv6 sid-sub-tlv-type

· srv6 compress enable

segment-routing ipv6 sid-sub-tlv-type

Use segment-routing ipv6 sid-sub-tlv-type to specify a type value for an SRv6 SID sub-TLV included in OSPFv3 routes.

Use undo segment-routing ipv6 sid-sub-tlv-type to restore the default.

Syntax

segment-routing ipv6 sid-sub-tlv-type { end-x end-x-value | lan-end-x lan-end-x-value }

undo segment-routing ipv6 sid-sub-tlv-type

Default

The type value is 31 for the P2P End.X SID sub-TLV included in OSPFv3 routes and 32 for the LAN End.X SID sub-TLV included in OSPFv3 routes.

Views

OSPFv3 process view

Predefined user roles

network-admin

Parameters

end-x end-x-value: Specifies a type value for the P2P End.X SID sub-TLV, in the range of 1 to 1000. The default value is 31.

lan-end-x lan-end-x-value: Specifies a type value for the LAN End.X SID sub-TLV, in the range of 1 to 1000. The default value is 32.

Usage guidelines

Operating mechanism

The type values for the End.X SID sub-TLVs included in OSPFv3 routes might vary by device model. For device intercommunication, use this command to ensure that all devices have the same type value for the same End.X SID sub-TLV included in OSPFv3 routes.

Restrictions and guidelines

· For a successful advertisement of SRv6 locators and SRv6 SIDs, make sure OSPFv3 neighbors use the same TLV type values.

· In broadcast and NBMA networks, OSPFv3 allocates SRv6 LAN End.X SID Sub TLVs for adjacent links when the interface type is DR. When the interface type is BDR or DROTHER, OSPFv3 might allocate SRv6 End.X SID Sub-TLVs instead of SRv6 LAN End.X SID Sub TLVs for adjacent links.

· In P2P and P2MP networks, OSPFv3 allocates SRv6 End.X SID Sub-TLVs for adjacent links.

Examples

# Set the type value of the P2P End.X SID sub-TLV to 20.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-ospfv3-1] segment-routing ipv6 sid-sub-tlv-type end-x 20

Related commands

segment-routing ipv6 private-srv6-extensions compatible

segment-routing microloop-avoidance enable

Use segment-routing microloop-avoidance enable to enable SR microloop avoidance.

Use undo segment-routing microloop-avoidance enable to disable SR microloop avoidance.

Syntax

In IS-IS IPv6 unicast address family view:

segment-routing microloop-avoidance enable [ level-1 | level-2 ]

undo segment-routing microloop-avoidance enable [ level-1 | level-2 ]

In OSPFv3 process view:

segment-routing microloop-avoidance enable

undo segment-routing microloop-avoidance enable

Default

SR microloop avoidance is disabled.

Views

IS-IS IPv6 unicast address family view

OSPFv3 process view

Predefined user roles

network-admin

Parameters

level-1: Specifies IS-IS Level-1.

level-2: Specifies IS-IS Level-2.

Usage guidelines

After a network failure occurs or recovers, route convergence occurs on relevant network devices. Because of nonsimultaneous convergence on network devices, microloops might be formed. After you configure SR microloop avoidance, the devices will forward traffic along the specified path before route convergence is finished on all the relevant network devices. Because the forwarding path is independent of route convergence, microloops are avoided.

Microloop avoidance after a network failure and a failure recovery is as follows:

· When a network failure occurs, a node enabled with this feature issues the calculated forwarding path to the FIB after route convergence and switches the traffic to the forwarding path after the delay timer times out. Before the timer times out, traffic is forwarded along the TI-LFA FRR backup path to avoid microloops.

· When the failure recovers, a node enabled with this feature also calculates an explicit path that contains SIDs except for the primary forwarding path. Before the timer times out, traffic is forwarded along the backup path to avoid microloops.

If you do not specify the level-1 or level-2 keyword, this command applies to both IS-IS levels.

Examples

# Enable SR microloop avoidance for IPv6 IS-IS process 1.

<Sysname> system-view

[Sysname] isis 1

[Sysname-isis-1] address-family ipv6

[Sysname-isis-1-ipv6] segment-routing microloop-avoidance enable

# Enable SR microloop avoidance for OSPFv3 process 1.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-isis-1] address-family ipv6

[Sysname-ospfv3-1] segment-routing microloop-avoidance enable

Related commands

fast-reroute microloop-avoidance enable (IS-IS IPv6 address family)

fast-reroute microloop-avoidance enable (OSPFv3 view)

segment-routing microloop-avoidance rib-update-delay

Use segment-routing microloop-avoidance rib-update-delay to set the SR microloop avoidance RIB-update-delay time.

Use undo segment-routing microloop-avoidance rib-update-delay to restore the default.

Syntax

In IS-IS IPv6 unicast address family view:

segment-routing microloop-avoidance rib-update-delay delay-time [ level-1 | level-2 ]

undo segment-routing microloop-avoidance rib-update-delay [ level-1 | level-2 ]

In OSPFv3 process view:

segment-routing microloop-avoidance rib-update-delay delay-time

undo segment-routing microloop-avoidance rib-update-delay

Default

The SR microloop avoidance RIB-update-delay time is 5000 milliseconds.

Views

IS-IS IPv6 unicast address family view

OSPFv3 process view

Predefined user roles

network-admin

Parameters

delay-time: Sets the delay time in milliseconds, in the range of 1 to 60000.

level-1: Specifies IS-IS Level-1.

level-2: Specifies IS-IS Level-2.

Usage guidelines

To ensure sufficient time for IGP to complete route convergence, set the SR microloop avoidance RIB-update-delay time. Before the timer expires, faulty relevant devices will forward traffic along the specified path. Upon expiration of the timer and completion of IGP route convergence, traffic will traverse along the IGP-calculated path.

If you do not specify the level-1 or level-2 keyword, this command applies to both IS-IS levels.

Examples

# Set the SR microloop avoidance RIB-update-delay time to 6000 milliseconds for IPv6 IS-IS process 1.

<Sysname> system-view

[Sysname] isis 1

[Sysname-isis-1] address-family ipv6

[Sysname-isis-1-ipv6] segment-routing microloop-avoidance rib-update-delay 6000

# Set the SR microloop avoidance RIB-update-delay time to 6000 milliseconds for OSPFv3 process 1.

<Sysname> system-view

[Sysname] ospfv3 1

[Sysname-isis-1] address-family ipv6

[Sysname-ospfv3-1] segment-routing microloop-avoidance rib-update-delay 6000

Related commands

segment-routing microloop-avoidance enable

segment-routing microloop-avoidance strict-sid-only

Use segment-routing microloop-avoidance strict-sid-only to configure SR microloop avoidance to encapsulate only strict SIDs in the SID list.

Use undo segment-routing microloop-avoidance strict-sid-only to restore the default.

Syntax

segment-routing microloop-avoidance strict-sid-only

undo segment-routing microloop-avoidance strict-sid-only

Default

The strict-SID-only feature is not configured for SR microloop avoidance.

Views

IS-IS IPv6 unicast address family view

Predefined user roles

network-admin

Usage guidelines

By default, SR microloop avoidance first calculates the End SID to the P node, and then calculates the End.X SIDs from the P node to the destination node. Then, the SIDs are encapsulated into the SRH in the order of the End SID of the P node and the End.X SIDs from the P node to the destination node.

If multipoint failure exists and the forwarding path is frequently switched, a microloop might exist on the path to the P node identified by the End SID. To resolve this issue, use this command to strictly constrain the path to the P node.

This command strictly constrains the path to the P node by calculating an End.X SID to reach the P node. The SIDs are encapsulated into the SID list of the SRH in the order of the End.X SID to the P node and the End.X SIDs from the P node to the destination node.

Examples

# Configure SR microloop avoidance to encapsulate only strict SIDs in the SID list for IS-IS process 1.

<Sysname> system-view

[Sysname] isis 1

[Sysname-isis-1] address-family ipv6

[Sysname-isis-1-ipv6] segment-routing microloop-avoidance strict-sid-only

snmp-agent trap enable srv6

Use snmp-agent trap enable srv6 to enable SNMP notifications for SRv6.

Use undo snmp-agent trap enable srv6 to disable SNMP notifications for SRv6.

Syntax

snmp-agent trap enable srv6

undo snmp-agent trap enable srv6

Default

SNMP notifications are disabled for SRv6.

Views

System view

Predefined user roles

network-admin

Usage guidelines

To report critical SRv6 events to an NMS, enable SNMP notifications for SRv6. For SRv6 event notifications to be sent correctly, you must also configure SNMP on the device. For more information about SNMP configuration, see Network Management and Monitoring Configuration Guide.

Examples

# Enable SNMP notifications for SRv6.

<Sysname> system-view

[Sysname] snmp-agent trap enable srv6

srv6 compress enable (IS-IS IPv6 address family view)

Use srv6 compress enable to enable SRv6 compression for IPv6 IS-IS.

Use undo srv6 compress enable to disable SRv6 compression for IPv6 IS-IS.

Syntax

srv6 compress enable [ level-1 | level-2 ]

undo srv6 compress enable [ level-1 | level-2 ]

Default

SRv6 compression is disabled for IPv6 IS-IS.

Views

IS-IS IPv6 address family view

Predefined user roles

network-admin

Parameters

level-1: Specifies the level-1 area.

level-2: Specifies the level-2 area.

Usage guidelines

If you do not specify a level, this command enables or disables SRv6 compression for both level-1 and level-2 areas.

If IPv6 IS-IS is used to advertise G-SIDs to neighbors, you must use this command to enable SRv6 compression for IPv6 IS-IS.

Use this command only when the cost style of IS-IS is wide, compatible, or wide-compatible.

For this command to take effect, apply a locator to IS-IS IPv6 address family view by using the segment-routing ipv6 locator command.

Examples

# Enable SRv6 compression for IPv6 IS-IS process 1.

<Sysname> system-view

[Sysname] isis 1

[Sysname-isis-1] cost-style wide

[Sysname-isis-1] address-family ipv6

[Sysname-isis-1-ipv6] srv6 compress enable

Related commands

segment-routing ipv6 locator (IS-IS IPv6 address family view)

srv6 compress enable (OSPFv3 view)

Use srv6 compress enable to enable SRv6 compression for OSPFv3.

Use undo srv6 compress enable to disable SRv6 compression for OSPFv3.

Syntax

srv6 compress enable

undo srv6 compress enable

Default

SRv6 compression is disabled for OSPFv3.

Views

OSPFv3 view

Predefined user roles

network-admin

Usage guidelines

If OSPFv3 is used to advertise G-SIDs to neighbors, you must use this command to enable SRv6 compression for OSPFv3.

If you enable SRv6 compression for OSPFv3 without configuring this command, OSPFv3 can only advertise non-compressed SRv6 SIDs to neighbors. If you enable TI-LFA FRR or microloop avoidance in OSPFv3 view, the FRR backup path calculated by OSPFv3 contains only non-compressed SRv6 SIDs.

For this command to take effect, apply a locator to OSPFv3 view.

Examples

# Enable SRv6 compression for OSPFv3 process 1.

<Sysname> system-view

[Sysname] opsfv3 1

[Sysname-ospfv3-1] srv6 compress enable

Related commands

segment-routing ipv6 locator (OSPFv3 view)

srv6 compress enable (SRv6 view)

Use srv6 compress enable to enable SRv6 compression.

Use undo srv6 compress enable to disable SRv6 compression.

Syntax

srv6 compress enable

undo srv6 compress enable

Default

SRv6 compression is disabled.

Views

SRv6 view

Predefined user roles

network-admin

Usage guidelines

Typically, an address space is reserved for SRv6 SID allocation in an SRv6 subnet. This address space is called an SID space. In the SRv6 subnet, all SIDs are allocated from the SID space. The SIDs have the same prefix (common prefix). The SID common prefix is redundant information in the SRH.

SRv6 compression removes the common prefix from the SIDs in the SID list of the SRH. The remaining part of an SID is called a G-SID. G-SIDs reduce the cost of SRH.

When SRv6 uses the SID list in the SRH to replace the destination address of a packet, it combines the common prefix and the destination G-SID to form a new SID. This new SID is used as the destination address of the packet.

Examples

# Enable SRv6 compression.

<Sysname> system-view

[Sysname] segment-routing ipv6

[Sysname-segment-routing-ipv6] srv6 compress enable

08-Segment Routing Command Reference

anycast enable

display segment-routing ipv6 brief

fast-reroute microloop-avoidance enable (IS-IS IPv6 address family)

fast-reroute microloop-avoidance rib-update-delay (IS-IS IPv6 address family)

Application scenarios

Restrictions and guidelines

Application scenarios

Operating mechanism

Restrictions and guidelines

Application scenarios

Operating mechanism

Restrictions and guidelines

segment-routing ipv6 end-x delete-delay

Application scenarios

Operating mechanism

Restrictions and guidelines

Operating mechanism

Restrictions and guidelines

segment-routing ipv6 sid-sub-tlv-type

Operating mechanism

Restrictions and guidelines

srv6 compress enable (SRv6 view)

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