RIPng configuration commands 1

checkzero· 1

default cost (RIPng view) 1

display ripng· 2

display ripng database· 3

display ripng interface· 4

display ripng route· 6

enable ipsec-policy (RIPng view) 7

filter-policy export (RIPng view) 8

filter-policy import (RIPng view) 9

import-route· 10

maximum load-balancing (RIPng view) 11

preference· 11

reset ripng process 12

reset ripng statistics 12

ripng· 13

ripng default-route· 14

ripng enable· 14

ripng ipsec-policy· 15

ripng metricin· 16

ripng metricout 16

ripng poison-reverse· 17

ripng split-horizon· 17

ripng summary-address 18

timers 19

 

checkzero

Syntax

checkzero

undo checkzero

View

RIPng view

Default level

2: System level

Parameters

None

Description

Use the checkzero command to enable the zero field check on RIPng packets.

Use the undo checkzero command to disable the zero field check.

The zero field check is enabled by default.

Some fields in RIPng packet headers must be zero. These fields are called zero fields.  You can enable the zero field check on RIPng packet headers. If any such field contains a non-zero value, the RIPng packet will be discarded.

Examples

# Disable the zero field check on RIPng packet headers of RIPng 100.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] undo checkzero

default cost (RIPng view)

Syntax

default cost cost

undo default cost

View

RIPng view

Default level

2: System level

Parameters

cost: Default metric of redistributed routes, in the range of 0 to 16.

Description

Use the default cost command to specify the default metric of redistributed routes.

Use the undo default cost command to restore the default.

The default metric of redistributed routes is 0.

The specified default metric applies to the routes redistributed by the import-route command with no metric specified.

Related commands: import-route.

Examples

# Set the default metric of redistributed routes to 2.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] default cost 2

display ripng

Syntax

display ripng [ process-id | vpn-instance vpn-instance-name ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

process-id: RIPng process ID, in the range of 1 to 65535.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN. vpn-instance-name is a case-sensitive string of 1 to 31 characters.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use the display ripng command to display the running status and configuration information of a RIPng process. If process-id is not specified, information of all RIPng processes will be displayed. If a VPN is specified, information about all the RIPng processes of the VPN is displayed.

Examples

# Display the running status and configuration information of all configured RIPng processes.

<Sysname> display ripng

Public VPN-instance name :

    RIPng process : 1

       Preference : 100

       Checkzero : Enabled

       Default Cost : 0

       Maximum number of balanced paths : 16

       Update time :   30 sec(s)  Timeout time           :  180 sec(s)

       Suppress time    :  120 sec(s)  Garbage-Collect time :  120 sec(s)

       Number of periodic updates sent : 0

       Number of trigger updates sent : 0

Table 1 Output description

Field	Description
Public VPN-instance name	Public VPN instance name
RIPng process	RIPng process ID
Preference	RIPng route priority
Checkzero	Indicates whether zero field check for RIPng packet headers is enabled
Default Cost	Default metric of redistributed routes
Maximum number of balanced paths	Maximum number of load balanced routes
Update time	RIPng update interval, in seconds
Timeout time	RIPng timeout interval, in seconds
Suppress time	RIPng suppress interval, in seconds
Garbage-Collect time	RIPng garbage collection interval, in seconds
Number of periodic updates sent	Number of periodic updates sent
Number of trigger updates sent	Number of triggered updates sent

 

display ripng database

Syntax

display ripng process-id database [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

process-id: RIPng process ID, in the range of 1 to 65535.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use the display ripng database command to display all active routes in the RIPng advertising database, which are sent in normal RIPng update messages.

Examples

# Display all the active routes in the database of RIPng process 100.

<Sysname> display ripng 100 database

   2001:7B::2:2A1:5DE/64,

        cost 4, Imported

   1:13::/120,

        cost 4, Imported

   1:32::/120,

        cost 4, Imported

   1:33::/120,

        cost 4, Imported

   100::/32,

       via FE80::200:5EFF:FE04:3302, cost 2

   3FFE:C00:C18:1::/64,

       via FE80::200:5EFF:FE04:B602, cost 2

   3FFE:C00:C18:1::/64,

       via FE80::200:5EFF:FE04:B601, cost 2

   3FFE:C00:C18:2::/64,

       via FE80::200:5EFF:FE04:B602, cost 2

   3FFE:C00:C18:3::/64,

       via FE80::200:5EFF:FE04:B601, cost 2

   4000:1::/64,

       via FE80::200:5EFF:FE04:3302, cost 2

   4000:2::/64,

       via FE80::200:5EFF:FE04:3302, cost 2

   1111::/64,

        cost 0, RIPng-interface

Table 2 Output description

Field	Description
2001:7B::2:2A1:5DE/64	IPv6 destination address/prefix length
via	Next hop IPv6 address
cost	Route metric value
Imported	Route redistributed from another routing protocol
RIPng-interface	Route learned from the interface

 

display ripng interface

Syntax

display ripng process-id interface [ interface-type interface-number ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

process-id: RIPng process ID, in the range of 1 to 65535.

interface-type interface-number: Specifies an interface.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use the display ripng interface command to display the interface information of the RIPng process.

If no interface is specified, information about all interfaces of the RIPng process will be displayed.

Examples

# Display the interface information of RIPng process 1.

<Sysname> display ripng 1 interface

Interface-name: vlan-interface 12

         Link Local Address: FE80::200:5EFF:FE19:3E00

         Split-horizon: on              Poison-reverse: off

         MetricIn: 0                      MetricOut: 1

         Default route: off

          Summary address:

                 3::/64

                 3::/16

Table 3 Output description

Field	Description
Interface-name	Name of an interface running RIPng.
Link Local Address	Link-local address of an interface running RIPng.
Split-horizon	Indicates whether the split horizon function is enabled (on: Enabled; off: Disabled).
Poison-reverse	Indicates whether the poison reverse function is enabled (on: Enabled; off: Disabled).
MetricIn/MetricOut	Additional metric to incoming and outgoing routes.
Default-route	·       Only/Originate—Only means that the interface advertises only the default route. Originate means that the default route and other RIPng routes are advertised. ·       Off—Indicates that no default route is advertised or the garbage-collect time expires after the default route advertisement was disabled. ·       In garbage-collect status—With default route advertisement disabled, the interface advertises the default route with metric 16 during the garbage-collect time.
Summary address	The summarized IPv6 prefix and the summary IPv6 prefix on the interface.

 

display ripng route

Syntax

display ripng process-id route [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

process-id: RIPng process ID, in the range of 1 to 65535.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use the display ripng route command to display all RIPng routes and timers associated with each route of a RIPng process.

Examples

# Display the routing information of RIPng process 100.

<Sysname> display ripng 100 route

   Route Flags: A - Aging, S - Suppressed, G - Garbage-collect

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

 Peer FE80::200:5EFF:FE04:B602  on vlan-interface 12

 Dest 3FFE:C00:C18:1::/64,

     via FE80::200:5EFF:FE04:B602, cost  2, tag 0, A, 34 Sec

 

 Dest 3FFE:C00:C18:2::/64,

     via FE80::200:5EFF:FE04:B602, cost  2, tag 0, A, 34 Sec

 

 Peer FE80::200:5EFF:FE04:B601 on vlan-interface 12

 Dest 3FFE:C00:C18:1::/64,

     via FE80::200:5EFF:FE04:B601, cost  2, tag 0, A, 13 Sec

 Dest 3FFE:C00:C18:3::/64,

     via FE80::200:5EFF:FE04:B601, cost  2, tag 0, A, 13 Sec

 

 Peer FE80::200:5EFF:FE04:3302  on vlan-interface 12

 Dest 100::/32,

     via FE80::200:5EFF:FE04:3302, cost  2, tag 0, A, 6 Sec

 Dest 4000:1::/64,

     via FE80::200:5EFF:FE04:3302, cost  2, tag 0, A, 6 Sec

 Dest 4000:2::/64,

     via FE80::200:5EFF:FE04:3302, cost  2, tag 0, A, 6 Sec

 Dest 4000:3::/64,

     via FE80::200:5EFF:FE04:3302, cost  2, tag 0, A, 6 Sec

 Dest 4000:4::/64,

Table 4 Output description

Field	Description
Peer	Neighbor connected to the interface.
Dest	IPv6 destination address.
via	Next hop IPv6 address.
cost	Routing metric value.
tag	Route tag.
Sec	Time that a route entry stays in a particular state.
“A”	The route is in aging state.
“S”	The route is in suppressed state.
“G”	The route is in Garbage-collect state.

 

enable ipsec-policy (RIPng view)

Syntax

enable ipsec-policy policy-name

undo enable ipsec-policy

View

RIPng view

Default level

2: System level

Parameters

policy-name: IPsec policy name, a string of 1 to 15 characters.

Description

Use the enable ipsec-policy command to apply an IPsec policy to a RIPng process.

Use the undo enable ipsec-policy command to remove the IPsec policy from the RIPng process.

By default, no IPsec policy is configured for the RIPng process.

The IPsec policy to be applied must have been configured.

Examples

# Apply IPsec policy policy001 to RIPng process 1.

<Sysname> system-view

[Sysname] ripng 1

[Sysname-ripng-1] enable ipsec-policy policy001

filter-policy export (RIPng view)

Syntax

filter-policy { acl6-number | ipv6-prefix ipv6-prefix-name } export [ protocol [ process-id ] ]

undo filter-policy export [ protocol [ process-id ] ]

View

RIPng view

Default level

2: System level

Parameters

acl6-number: Specifies the number of an ACL to filter advertised routing information, in the range of 2000 to 3999.

ipv6-prefix ipv6-prefix-name: Specifies the name of an IPv6 prefix list used to filter routing information, a string of 1 to 19 characters.

protocol: Filters routes redistributed from a routing protocol, currently including bgp4+, direct, isisv6, ospfv3, ripng, and static.

process-id: Process number of the specified routing protocol, in the range of 1 to 65535. This argument is available only when the routing protocol is ripng, ospfv3, or isisv6.

Description

Use the filter-policy export command to define an outbound route filtering policy. Only routes passing the filter can be advertised in the update messages.

Use the undo filter-policy export command to disable the outbound route filtering.

By default, RIPng does not filter any outbound routing information.

With the protocol argument specified, only routing information redistributed from the specified routing protocol will be filtered. Otherwise, all outgoing routing information will be filtered.

If you want to reference an advanced ACL (with a number from 3000 to 3999) in the command, the ACL should be configured with the rule [ rule-id ] { deny | permit } ipv6 source sour sour-prefix command to deny/permit a route with the specified destination, or with the rule [ rule-id ] { deny | permit } ipv6 source sour sour-prefix destination dest dest-prefix command to deny/permit a route with the specified destination and prefix. The source keyword specifies the destination address of a route while the destination keyword specifies the prefix of the route (the prefix must be valid; otherwise, the configuration is ineffective).

Examples

# Use IPv6 prefix list Filter 2 to filter advertised RIPng updates.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] filter-policy ipv6-prefix Filter2 export

# Configure ACL6 3000 to permit only route 2001::1/128 to pass, and reference ACL6 3000 to filter RIPng updates.

<Sysname> system-view

[Sysname] acl ipv6 number 3000

[Sysname-acl6-adv-3000] rule 10 permit ipv6 source 2001::1 128 destination ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 128

[Sysname-acl6-adv-3000] rule 100 deny ipv6

[Sysname-acl6-adv-3000] quit

[Sysname] ripng 100

[Sysname-ripng-100] filter-policy 3000 export

filter-policy import (RIPng view)

Syntax

filter-policy { acl6-number | ipv6-prefix ipv6-prefix-name } import

undo filter-policy import

View

RIPng view

Default level

2: System level

Parameters

acl6-number: Specifies the number of an ACL to filter incoming routing information, in the range of 2000 to 3999.

ipv6-prefix ipv6-prefix-name: Specifies the name of an IPv6 prefix list to filter incoming routes, in the range of 1 to 19 characters.

Description

Use the filter-policy import command to define an inbound route filtering policy. Only routes which match the filtering policy can be received.

Use the undo filter-policy import command to disable inbound route filtering.

By default, RIPng does not filter incoming routing information.

Note that if you want to reference an advanced ACL (with a number from 3000 to 3999) in the command, the ACL should be configured with the rule [ rule-id ] { deny | permit } ipv6 source sour sour-prefix command to deny/permit a route with the specified destination, or with the rule [ rule-id ] { deny | permit } ipv6 source sour sour-prefix destination dest dest-prefix command to deny/permit a route with the specified destination and prefix. The source keyword specifies the destination address of a route while the destination keyword specifies the prefix of the route (the prefix must be valid; otherwise, the configuration is ineffective).

Examples

# Reference IPv6 prefix list Filter1 to filter incoming RIPng updates.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] filter-policy ipv6-prefix Filter1 import

# Configure ACL6 3000 to permit only route 2001::1/128 to pass, and reference ACL6 3000 to filter incoming RIPng updates.

<Sysname> system-view

[Sysname] acl ipv6 number 3000

[Sysname-acl6-adv-3000] rule 10 permit ipv6 source 2001::1 128 destination ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 128

[Sysname-acl6-adv-3000] rule 100 deny ipv6

[Sysname-acl6-adv-3000] quit

[Sysname] ripng 100

[Sysname-ripng-100] filter-policy 3000 import

import-route

Syntax

import-route protocol [ process-id ] [ allow-ibgp ] [ cost cost | route-policy route-policy-name ] *

undo import-route protocol [ process-id ]

View

RIPng view

Default level

2: System level

Parameters

protocol: Specifies a routing protocol from which to redistribute routes. Currently, it can be bgp4+, direct, isisv6, ospfv3, ripng, or static.

process-id: Process ID, in the range of 1 to 65535. The default is 1.This argument is available only when the protocol is isisv6, ospfv3, or ripng.

cost: Routing metric of redistributed routes, in the range of 0 to 16. If cost value is not specified, the metric is the default metric specified by the default cost command.

route-policy route-policy-name: Specifies a routing policy by its name with 1 to 63 case-sensitive characters.

allow-ibgp: Optional keyword when the specified protocol is bgp4+.

Description

Use the import-route command to redistribute routes from another routing protocol.

Use the undo import-route command to disable redistributing routes from another routing protocol.

By default, RIPng does not redistribute routes from other routing protocols.

Related commands: default cost.

 

CAUTION: The import-route bgp command redistributes only EBGP routes. The import-route bgp allow-ibgp command redistributes additionally IBGP routes. Be cautious when using the latter command.

 

Examples

# Redistribute IPv6-IS-IS routes (process 7) and specify the metric as 7.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] import-route isisv6 7 cost 7

maximum load-balancing (RIPng view)

Syntax

maximum load-balancing number

undo maximum load-balancing

View

RIPng view

Default level

2: System level

Parameters

number: Maximum number of equal-cost routes, in the range of 1 to 16.

Description

Use the maximum load-balancing command to specify the maximum number of equal-cost routes.

Use the undo maximum load-balancing command to restore the default.

By default, the maximum number of equal-cost RIPng routes for load balancing is 16.

 

NOTE: Configure the maximum number according to the memory size.

 

Examples

# Set the maximum number of load balanced RIPng routes with equal cost to 2.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] maximum load-balancing 2

# Restore the default.

[Sysname-ripng-100] undo maximum load-balancing

preference

Syntax

preference [ route-policy route-policy-name ] preference

undo preference [ route-policy ]

View

RIPng view

Default level

2: System level

Parameters

route-policy-name: Routing policy name with 1 to 63 case-sensitive characters.

preference: Preference for RIPng routes, in the range of 1 to 255.

Description

Use the preference command to specify the RIPng route priority.

Use the undo preference route-policy command to restore the default.

By default, the priority of a RIPng route is 100.

Using the route-policy keyword can set a priority for routes filtered in by the routing policy:

·           If a priority is set in the routing policy, the priority applies to matched routes, and the priority set by the preference command applies to routes not matched.

·           If no priority is set in the routing policy, the one set by the preference command applies to all routes.

Examples

# Set the RIPng route priority to 120.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] preference 120

# Restore the default RIPng route priority.

[Sysname-ripng-100] undo preference

reset ripng process

Syntax

reset ripng process-id process

View

User view

Default level

2: System level

Parameters

process-id: RIPng process ID, in the range of 1 to 65535.

Description

Use the reset ripng process command to reset the specified RIPng process.

After executing the command, you are prompted whether you want to reset the RIPng process.

Examples

# Reset RIPng process 100.

<Sysname> reset ripng 100 process

Warning : Reset RIPng process? [Y/N]:Y

reset ripng statistics

Syntax

reset ripng process-id statistics

View

User view

Default level

1: Monitor level

Parameters

process-id: RIPng process ID, in the range of 1 to 65535.

Description

Use the reset ripng statistics command to clear the statistics of the specified RIPng process.

Examples

# Clear the statistics of RIPng process 100.

<Sysname> reset ripng 100 statistics

ripng

Syntax

ripng [ process-id ] [ vpn-instance vpn-instance-name ]

undo ripng [ process-id ] [ vpn-instance vpn-instance-name ]

View

System view

Default level

2: System level

Parameters

process-id: RIPng process ID, in the range of 1 to 65535. The default value is 1.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN. vpn-instance-name is a case-sensitive string of 1 to 31 characters.

Description

Use the ripng command to create a RIPng process and enter RIPng view.

Use the undo ripng command to disable a RIPng process.

By default, no RIPng process is enabled.

·           If no VPN is specified, the RIPng process is enabled for the public network.

·           The specified VPN instance must have been created with the ip vpn-instance command.

·           Before configuring global RIPng parameters, you must create a RIPng process. This requirement does not apply to interface RIPng parameter configuration.

·           After you disable a RIPng process, the RIPng parameters on interface running the process also become ineffective.

Examples

# Create RIPng process 100 and enter its view.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100]

# Disable RIPng process 100.

[Sysname] undo ripng 100

# Create RIPng process 101 and bind it to VPN instance vpn101.

<Sysname> system-view

[Sysname] ripng 101 vpn-instance vpn101

ripng default-route

Syntax

ripng default-route { only | originate } [ cost cost ]

undo ripng default-route

View

Interface view

Default level

2: System level

Parameters

only: Indicates that only the IPv6 default route (::/0) is advertised through the interface.

originate: Indicates that the IPv6 default route (::/0) is advertised without suppressing other routes.

cost: Metric of the advertised default route, in the range of 1 to 15, with a default value of 1.

Description

Use the ripng default-route command to advertise a default route with the specified routing metric to a RIPng neighbor.

Use the undo ripng default-route command to stop advertising or forwarding the default route.

By default, a RIP process does not advertise any default route.

After you execute this command, the generated RIPng default route is advertised in a route update over the specified interface. This IPv6 default route is advertised without considering whether it already exists in the local IPv6 routing table.

Examples

# Advertise only the default route through VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng default-route only

# Advertise the default route together with other routes through VLAN-interface 101.

<Sysname> system-view

[Sysname] interface vlan-interface 101

[Sysname-Vlan-interface101] ripng default-route originate

ripng enable

Syntax

ripng process-id enable

undo ripng [ process-id ] enable

View

Interface view

Default level

2: System level

Parameters

process-id: RIPng process ID, in the range of 1 to 65535.

Description

Use the ripng enable command to enable RIPng on the specified interface.

Use the undo ripng enable command to disable RIPng on the specified interface.

By default, RIPng is disabled on an interface.

Examples

# Enable RIPng100 on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng 100 enable

ripng ipsec-policy

Syntax

ripng ipsec-policy policy-name

undo ripng ipsec-policy

View

Interface view

Default level

2: System level

Parameters

policy-name: IPsec policy name, a string of 1 to 15 characters.

Description

Use the ripng ipsec-policy command to apply an IPsec policy on a RIPng interface.

Use the undo ripng ipsec-policy command to remove the IPsec policy from the RIPng interface.

By default, no IPsec policy is configured for the RIPng interface.

The IPsec policy to be applied must have been configured.

Examples

# Apply IPsec policy policy001 to VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng ipsec-policy policy001

ripng metricin

Syntax

ripng metricin value

undo ripng metricin

View

Interface view

Default level

2: System level

Parameters

value: Additional metric for received routes, in the range of 0 to 16.

Description

Use the ripng metricin command to specify an additional metric for received RIPng routes.

Use the undo ripng metricin command to restore the default.

By default, the additional metric to received routes is 0.

Related commands: ripng metricout.

Examples

# Specify the additional routing metric as 12 for RIPng routes received by VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng metricin 12

ripng metricout

Syntax

ripng metricout value

undo ripng metricout

View

Interface view

Default level

2: System level

Parameters

value: Additional metric to advertised routes, in the range of 0 to 16.

Description

Use the ripng metricout command to configure an additional metric for RIPng routes advertised by an interface.

Use the undo rip metricout command to restore the default.

The default additional routing metric is 1.

Related commands: ripng metricin.

Examples

# Set the additional metric to 12 for routes advertised by VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng metricout 12

ripng poison-reverse

Syntax

ripng poison-reverse

undo ripng poison-reverse

View

Interface view

Default level

2: System level

Parameters

None

Description

Use the rip poison-reverse command to enable the poison reverse function.

Use the undo rip poison-reverse command to disable the poison reverse function.

By default, the poison reverse function is disabled.

Examples

# Enable the poison reverse function for RIPng update messages on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng poison-reverse

ripng split-horizon

Syntax

ripng split-horizon

undo ripng split-horizon

View

Interface view

Default level

2: System level

Parameters

None

Description

Use the rip split-horizon command to enable the split horizon function.

Use the undo rip split-horizon command to disable the split horizon function.

By default, the split horizon function is enabled.

The split horizon function is necessary for preventing routing loops. Therefore, you are not recommended to disable it.

In special cases, make sure that it is necessary to disable the split horizon function before doing so.

 

NOTE: ·       If both the poison reverse and split horizon functions are enabled, only the poison reverse function takes effect. ·       In frame relay and other non-broadcast multi-access (NBMA) networks, split horizon should be disabled if multiple VCs are configured on the primary interface and secondary interfaces to ensure route advertisement. For detailed information, see Layer 2—WAN Configuration Guide.

 

Examples

# Enable the split horizon function on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ripng split-horizon

ripng summary-address

Syntax

ripng summary-address ipv6-address prefix-length

undo ripng summary-address ipv6-address prefix-length

View

Interface view

Default level

2: System level

Parameters

ipv6-address: Destination IPv6 address of the summary route.

prefix-length: Prefix length of the destination IPv6 address of the summary route, in the range of 0 to 128. It indicates the number of consecutive 1s of the prefix, which defines the network ID.

Description

Use the ripng summary-address command to configure a summary network to be advertised through the interface.

Use the undo ripng summary-address command to remove the summary.

If the prefix and the prefix length of a route match the IPv6 prefix, the IPv6 prefix will be advertised instead. Thus, one route can be advertised on behalf of many routes. After summarization, the summary route cost is the lowest cost among summarized routes.

Examples

# Assign an IPv6 address with the 64-bit prefix to VLAN-interface 100 and configure a summary with the 35-bit prefix length.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 address 2001:200::3EFF:FE11:6770/64

[Sysname-Vlan-interface100] ripng summary-address 2001:200:: 35

timers

Syntax

timers { garbage-collect garbage-collect-value | suppress suppress-value | timeout timeout-value | update update-value } *

undo timers { garbage-collect | suppress | timeout | update } *

View

RIPng view

Default level

2: System level

Parameters

garbage-collect-value: Interval of the garbage-collect timer in seconds, in the range of 1 to 86400.

suppress-value: Interval of the suppress timer in seconds, in the range of 0 to 86400.

timeout-value: Interval  of the timeout timer in seconds, in the range of 1 to 86400.

update-value: Interval of the update timer in seconds, in the range of 1 to 86400.

Description

Use the timers command to configure RIPng timers.

Use the undo timers command to restore the default.

By default, the garbage-collect timer is 120 seconds, the suppress timer 120 seconds, the timeout timer 180 seconds, and the update timer 30 seconds.

RIPng is controlled by the above four timers.

·           The update timer defines the interval between update messages.

·           The timeout timer defines the route aging time. If no update message related to a route is received within the aging time, the metric of the route is set to 16 in the routing table.

·           The suppress timer defines for how long a RIPng route stays in suppressed state. When the metric of a route is 16, the route enters the suppressed state. In suppressed state, only routes which come from the same neighbor and whose metric is less than 16 will be received by the switch to replace unreachable routes.

·           The garbage-collect timer defines the interval from when the metric of a route becomes 16 to when it is deleted from the routing table. During the garbage-collect timer length, RIPng advertises the route with the routing metric set to 16. If no update message is announced for that route before the garbage-collect timer expires, the route will be completely deleted from the routing table.

 

NOTE: ·       H3C does not recommend changing the default values of these timers under normal circumstances. ·       The lengths of these timers must be kept consistent on all switches in the network.

 

Examples

# Configure the update, timeout, suppress, and garbage-collect timers as 5s, 15s, 15s and 30s.

<Sysname> system-view

[Sysname] ripng 100

[Sysname-ripng-100] timers update 5

[Sysname-ripng-100] timers timeout 15

[Sysname-ripng-100] timers suppress 15

[Sysname-ripng-100] timers garbage-collect 30