7.5 Using Multiple Routing Protocols
7.5.10 Verifying redistribution operation
Following is the best way to verify redistribution operation:
  • Know your network topology, particularly where redundant routes exist.
  • Show the routing table of the appropriate routing protocol on a variety of routers in the internetwork using the show command. For example, check the routing table on the ASBR as well as some of the internal routers in each AS.
  • Perform a trace on some of the routes that go across the ASs to verify that the shortest path is being used for routing. Make sure that you run traces especially to networks for which redundant routes exist.
  • If you do encounter routing problems, use trace and debug commands to observe the routing update traffic on the ASBRs and internal routers.

Note: Running debug requires extra processing by the router, so if the router is already overloaded, initiating debug is not recommended.

Lab Activity
  In this lab, you will learn how to setup mutual route redistribution between OSPF and IGRP.