[RIPv2] Configuring Route Summarization

In this lab, we will see how to configure RIP route summarization.

Here’s the topology we will use:

RIP Route Summarization Topology

Here’s the RIPv2 configuration before summarization:

For R1:

R1(config)#router rip
R1(config-router)#version 2
R1(config-router)#no auto-summary 

For R2:

R1(config)#router rip
R2(config-router)#version 2
R2(config-router)#no auto-summary 

The routing table of router R2 will look like this:

R2#show ip route rip is subnetted, 2 subnets
R [120/1] via, 00:00:24, FastEthernet0/0
R [120/1] via, 00:00:24, FastEthernet0/0

Above you see both networks. Now let’s create a summary: = 172.16.00000000.0/24 = 172.16.00000001.0/24

The /23 is the more specific because it only covers and

R1(config)#interface fastEthernet 0/0
R1(config-if)#ip summary-address rip

This is what it looks like on router R2:

R2#show ip route rip is subnetted, 1 subnets
R [120/1] via, 00:00:22, FastEthernet0/0

I hope this been informative for you, enjoy !

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