Scenario 5-2: Summarization with EIGRP

In this scenario, you use summarization with the network configured for EIGRP in Scenario 5-1 and reduce the IP routing table size within an AS and external to the AS.

Figure 5-3 displays the connected routes being advertised by R1 and R2.

Figure 5-3. R1 and R2 Connected Networks

The networks ranging from 131.108.1.0 to 131.108.31.255 reside on two routers; in other words, 31 subnets or IP routing entries populate the routing tables in AS 1 and AS 2.

Example 5-31 displays the IP routing table on R3.

Example 5-31. R3's IP Routing Table
R3#show ip route 168.131.0.0/16 is variably subnetted, 3 subnets, 3 masks ...

Get CCNP® Practical Studies: Routing now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.