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Configure RIPng Route Control

Configuration Condition

Before configuring RIPng route control, ensure that:

  • The IPv6 capability of the interface is enabled.
  • RIPng is enabled.

Configure the Administrative Distance of RIPng

One device can run multiple routing protocols at the same time. The device selects the optimal route from the routes that are learnt from different protocols based on the administrative distances. The smaller the administrative distance is, the higher the priority is.

Table 6-5 Configure the administrative distance of RIPng

Step

Command

Description

Enter the global configuration mode.

configure terminal

-

Enter the RIPng configuration mode.

ipv6 router rip process-id

-

Configure the administrative distance of RIPng.

distance distance-value

Mandatory.

By default, the administrative distance of RIPng is 120.

Configure a RIPng Route Summary

RIPng route summary always indicates configuring a pair of destination addresses and masks, which summarizes the routes in the covered network segment.

After RIP route summary is configured, the device advertises only the summary route. This greatly decreases the size of adjacent RIPng route tables in the medium and large networks, and decreases the consumption of the routing protocol packets for the network bandwidth.

The metric of the summary route adopts the minimum of all subnet route metrics.

Table 6-6 Configure the RIPng route summary function

Step

Command

Description

Enter the global configuration mode.

configure terminal

-

Enter the interface configuration mode.

interface interface-name

-

Configure the route summary function of RIPng on the interface

ipv6 rip summary-address prefix-address

Mandatory

By default, do not configure the route summary function.

Configure the RIPng Metric Offset

By default, RIPng adopts the route metric advertised by the neighbor device for the received routes. To modify the metric in some special application scenarios, you can configure the RIP metric offset to correct the metric of the specified route.

If the metric in the incoming direction is configured, RIPng modifies the metric of the received routes and saves the routes into the routing table. When RIPng advertises a metric to the neighbor devices, it advertises the new metric. If the metric in the outgoing direction is configured, the metric is modified only when RIPng advertises a metric to the neighbor devices.

Table 6-7 Configure the RIPng metric offset

Step

Command

Description

Enter the global configuration mode.

configure terminal

-

Enter the RIPng configuration mode.

ipv6 router rip process-id

Mandatory

By default, the RIPng process is disabled.

Configure RIPng to modify the metric of the specified route.

offset-list access-list-name { in | out } metric-offset [ interface-name ]

Mandatory

By default, no metric is configured for any interface.

Configure RIPng Route Filtration

A router can filter the received or advertised routes by configuring an Access Control List (ACL) or prefix list. In receiving RIPng routes, you can filter some learnt routes; or in advertising RIPng routes, you can filter some routes that are advertised to neighbor devices.

Table 6-8 Configure RIPng route filtration

Step

Command

Description

Enter the global configuration mode.

configure terminal

-

Enter the RIPng configuration mode.

ipv6 router rip process-id

Mandatory

By default, the RIPng process is disabled.

Configure the RIPng route filtering function

distribute-list { access-list-name | prefix prefix-list-name | route-map route-map-name} { in | out } [ interface-name ]

Mandatory

By default, the route filtering function is not configured. During the configuration process of the route filtering function, if no interface is specified, route filtering is enabled for all RIPng interfaces.

Configure the Metric of the RIPng Interface

After the interface enables RIPng, the corresponding direct route is generated in the database, with the default metric 1. When the route is in the RIPng database or it is advertised to neighbor devices, and if the metric is configured on the interface, adopt the interface metric.

If the interface metric is changed, the RIPng database immediately updates the corresponding direct route of RIPng and advertises the new metric to the neighbor devices.

Table 6-9 Configure the metric of the RIPng interface

Step

Command

Description

Enter the global configuration mode.

configure terminal

-

Enter the interface configuration mode.

interface interface-name

-

Configure the metric of the RIPng interface

ipv6 rip metric metric-value

Mandatory

By default, the RIPng interface metric is 1.

note


  • Configuring the RIPng interface metric affects only the metric of the direct subnet on the interface, while it does not affect the metric learned by the route.

Configure the Routing Tag for a RIPng Interface

The network administrator can attach tags to some routes. Then, when applying a routing policy, perform route filtering or route property advertisement based on the tags.

Table 6-10 Configure the routing flag for a RIPng interface

Step

Command

Description

Enter the global configuration mode.

configure terminal

-

Enter the interface configuration mode.

interface interface-name

-

Configure a RIPng route tag of the direct subnet on the interface.

ipv6 rip tag tag-value

Mandatory

By default, do not configure the route tag.

Configure the Maximum Number of RIPng Load Balancing Entries

This command helps you to control the number of the load balancing entries of the RIPng route.

Table 6-11 Configure the maximum number of RIPng load balancing entries

Step

Command

Description

Enter the global configuration mode.

configure terminal

-

Enter the RIPng configuration mode.

ipv6 router rip process-id

Mandatory

By default,  the RIPng process is disabled.

Configure the maximum number of RIPng load balancing entries

maximum-paths max-number

Optional.

By default, the maximum number of RIPng load balancing entries is 4.