Basic IP forwarding commands 1

display fib· 1

Load sharing commands 4

display ip load-sharing path· 4

ip load-sharing local-first enable· 5

ip load-sharing mode per-flow·· 6

ip load-sharing symmetric enable· 7

 

display fib

Use display fib to display FIB entries.

Syntax

display fib [ vpn-instance vpn-instance-name ] [ ip-address [ mask | mask-length ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

vpn-instance vpn-instance-name: Displays the FIB table for the specified VPN. The vpn-instance-name argument is a case-sensitive string of 1 to 31 characters. If you do not specify a VPN, this command displays the FIB entries of the public network.

ip-address: Displays the FIB entry that matches the specified destination IP address.

mask: Specifies the mask for the IP address.

mask-length: Specifies the mask length for the IP address, the number of consecutive ones in the mask. The value range is 0 to 32.

Usage guidelines

Each FIB entry contains a destination IP address/mask, next hop, and output interface.

If you specify an IP address without a mask or mask length, this command displays the longest matching FIB entry.

If you specify an IP address and a mask or mask length, this command displays the exactly matching FIB entry.

Examples

# Display all FIB entries of the public network.

<Sysname> display fib

 

Destination count: 9 FIB entry count: 9

 

Flag:

  U:Useable   G:Gateway   H:Host   B:Blackhole   D:Dynamic   S:Static

  R:Relay     F:FRR

 

Destination/Mask   Nexthop         Flag     OutInterface/Token       Label

0.0.0.0/32         127.0.0.1       UH       InLoop0                  Null

127.0.0.0/8        127.0.0.1       U        InLoop0                  Null

127.0.0.0/32       127.0.0.1       UH       InLoop0                  Null

127.0.0.1/32       127.0.0.1       UH       InLoop0                  Null

127.255.255.255/32 127.0.0.1       UH       InLoop0                  Null

192.168.0.0/24     192.168.0.63    U        M-GE0/0/0                Null

192.168.0.0/32     192.168.0.63    UBH      M-GE0/0/0                Null

192.168.0.2/32     192.168.0.2     UH       M-GE0/0/0                Null

192.168.0.3/32     192.168.0.3     UH       M-GE0/0/0                Null

# Display the FIB entries for VPN vpn1.

<Sysname> display fib vpn-instance vpn1

Destination count: 8 FIB entry count: 8

 

Flag:

  U:Useable   G:Gateway   H:Host   B:Blackhole   D:Dynamic   S:Static

  R:Relay     F:FRR

 

Destination/Mask   Nexthop         Flag     OutInterface/Token       Label

0.0.0.0/32         127.0.0.1       UH       InLoop0                  Null

20.20.20.0/24      20.20.20.25     U        FGE1/1/2                 Null

20.20.20.0/32      20.20.20.25     UBH      FGE1/1/2                 Null

20.20.20.25/32     127.0.0.1       UH       InLoop0                  Null

20.20.20.25/32     20.20.20.25     H        FGE1/1/2                 Null

20.20.20.255/32    20.20.20.25     UBH      FGE1/1/2                 Null

30.30.30.0/24      30.30.30.30     U        FGE1/1/2                 Null

30.30.30.0/32      30.30.30.30     UBH      FGE1/1/8                 Null

# Display the FIB entries matching the destination IP address 10.2.1.1.

<Sysname> display fib 10.2.1.1

 

Destination count: 1 FIB entry count: 1

 

Flag:

  U:Useable   G:Gateway   H:Host   B:Blackhole   D:Dynamic   S:Static

  R:Relay     F:FRR

 

Destination/Mask   Nexthop         Flag     OutInterface/Token       Label

10.2.1.1/32        127.0.0.1       UH       InLoop0                  Null

Table 1 Command output

Field	Description
Destination count	Total number of destination addresses.
FIB entry count	Total number of FIB entries.
Destination/Mask	Destination address/mask length.
Nexthop	Next hop address.
Flag	Flags of routes: ·     U—Usable route. ·     G—Gateway route. ·     H—Host route. ·     B—Blackhole route. ·     D—Dynamic route. ·     S—Static route. ·     R—Relay route. ·     F—Fast reroute.
OutInterface/Token	Output interface/LSP index number.
Label	Inner label.

 

 

display ip load-sharing path

Use display ip load-sharing path to display the load sharing path selected for a flow.

Syntax

display ip load-sharing path ingress-port interface-type interface-number packet-format { ipv4oe dest-ip ip-address [ src-ip ip-address ] | ipv6oe dest-ipv6 ipv6-address [ src-ipv6 ipv6-address ] } [ dest-port port-id | src-port port-id | ip-pro protocol-id | vpn-instance vpn-instance-name ] *

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

ingress-port interface-type interface-number: Specify an ingress port by its type and number.

packet-format: Specifies the packet encapsulation format.

ipv4oe: Specifies the format of IPv4 over Ethernet.

dest-ip ip-address: Specifies the destination IPv4 address in dotted decimal notation.

src-ip ip-address: Specifies the source IPv4 address in dotted decimal notation. If you do not specify this argument, the calculation uses 0.0.0.0 for path selection.

ipv6oe: Specifies the format of IPv6 over Ethernet.

dest-ipv6 ipv6-address: Specifies the destination IPv6 address.

src-ipv6 ipv6-address: Specifies the source IPv6 address. If you do not specify this option, the calculation uses 0:0:0:0:0:0:0:0.

dest-port port-id: Specifies a destination port number in the range of 1 to 65535. If you do not specify this option, the calculation uses 0 for path selection.

source-port port-id: Specifies a source port number in the range of 1 to 65535. If you do not specify this option, the calculation uses 0 for path selection.

ip-pro protocol-id: Specifies an IP protocol by its number in the range of 1 to 65535. If you do not specify this option, the calculation uses 0 for path selection.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. To display the path on the public network, do not specify this option.

Usage guidelines

When you configure this command, make sure the options are the same as those in the ip load-sharing mode per-flow command. If the options are not consistent, the path displayed by this command might be different from the real path for load sharing.

Examples

# Display the load sharing path selected for the flow with the following attributes: ingress interface FortyGigE 1/1/3, destination IP address 10.110.0.2, source IP address 10.100.0.2, IP protocol number 153, destination port number 2000, source port number 2000, VPN instance vpn10.

<Sysname> display ip load-sharing path ingress-port FortyGigE 1/1/3 packet-format ipv4oe destination-ip 10.110.0.2 source-ip 10.100.0.2 ip-pro 153 dest-port 2000 src-port 2000 vpn-instance vpn10

Load-sharing algorithm: 0

Load-sharing options: ingress-port | dest-ip | src-ip | ip-pro | dest-port | src-port

Load-sharing parameters:

  Missing configured are set to 0.

  ingress-port: FortyGigE1/1/3

  packet-format: IPv4oE

  dest-ip: 10.110.0.2

  src-ip: 10.100.0.2

  ip-pro: 153

  dest-port: 2000

  src-port: 2000

  vpn-instance: VPN10

Path selected: 20.0.0.2(interface FortyGigE1/1/3)

Table 2 Command output

Field	Description
Load-sharing algorithm	Load sharing algorithm ID.
Load-sharing options	Load sharing options specified by the ip load-sharing mode per-flow command.
Load-sharing parameters	Load sharing parameters that you specify for the display ip load-sharing path command.
Missing configured are set to 0.	Values of the unconfigured parameters are set to 0.
ingress-port	Ingress port of the packet.
packet-format	Packet encapsulation format.
dest-ip	Destination IP address of the packet.
src-ip	Source IP address of the packet.
ip-pro	IP protocol number.
dest-port	Destination port number.
src-port:	Source port number.
vpn-instance	Name of the MPLS L3VPN instance.
Path selected	Selected path information, including the IPv4 or IPv6 address of the next hop and the egress port.

 

ip load-sharing local-first enable

Use ip load-sharing local-first enable to enable local-first load sharing.

Use undo ip load-sharing local-first enable to disable local-first load sharing.

Syntax

ip load-sharing local-first enable

undo ip load-sharing local-first enable

Default

Local-first load sharing is enabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

Local-first load sharing takes effect only in an IRF fabric.

Examples

# Disable local-first load sharing.

<Sysname> system-view

[Sysname] undo ip load-sharing local-first enable

ip load-sharing mode per-flow

Use ip load-sharing mode per-flow to configure per-flow load sharing.

Use undo ip load-sharing mode per-flow to restore the default.

Syntax

ip load-sharing mode per-flow [ tunnel { inner | outer } | algorithm algorithm-number | [ dest-ip | dest-port | ingress-port | ip-pro | src-ip | src-port ] * ] [ slot slot-number ]

undo ip load-sharing mode [ slot slot-number ]

Default

The device performs per-flow load sharing based on the source IP address, destination IP address, source port, destination port, IP protocol number, ingress port, and VLAN.

Views

System view

Predefined user roles

network-admin

Parameters

per-flow: Implements per-flow load sharing.

algorithm algorithm-number: Enables flow-based load sharing algorithm switching. The algorithm-number argument specifies the algorithm to be switched, and is in the range of 0 to 8. Value 0 indicates the default algorithm.

dest-ip: Identifies flows by destination IP address.

dest-port: Identifies flows by destination port.

ingress-port: Identifies flows by ingress port.

ip-pro: Identifies flows by protocol ID.

src-ip: Identifies flows by source IP address.

src-port: Identifies flows by source port.

tunnel: Performs load sharing for IP tunnel packets.

·     inner: Identifies flows by inner IP header information.

·     outer: Identifies flows by outer IP header information.

slot slot-number: Specifies an IRF member device by its member ID.

Examples

# Configure per-flow load sharing on IRF member device 2.

<Sysname> system-view

[Sysname] ip load-sharing mode per-flow slot 2

ip load-sharing symmetric enable

Use ip load-sharing symmetric enable to enable symmetric load sharing.

Use undo ip load-sharing symmetric enable to restore the default.

Syntax

ip load-sharing symmetric enable

undo ip load-sharing symmetric enable

Default

Symmetric load sharing is disabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

This feature enables the device to load share a flow and its return traffic on the same path.

Examples

# Enable symmetric load sharing.

<Sysname> system-view

[Sysname] ip load-sharing symmetric enable