7.3 IGRP  
  7.3.8 Troubleshooting IGRP  
Most IGRP configuration errors involve a mistyped network statement, discontiguous subnets, or an incorrect Autonomous System Number.

The following commands are useful when troubleshooting IGRP:

  • show ip protocols
  • show ip route
  • debug ip igrp events
  • debug ip igrp transactions
  • ping
  • traceroute

Figure illustrates output from debug ip igrp events command.

Figure illustrates output from debug ip igrp transactions command.

It is discovered that the wrong AS number was being used, correcting it results in the output in Figure .

 

Lab Activity

Lab Exercise: Unequal Cost Load Balancing with IGRP

This lab is to observe unequal-cost load balancing and tune IGRP networks by using advanced debug commands.
 
 

Web Links

Configuring IGRP

http://www.cisco.com/en/US/products/sw/ iosswrel/ps1831/ products_ onfiguration_guide_ chapter09186a00800d97f6.html