| 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