i have two routers run igrp 1,the topology is as follow: node(10.2.2.1)----eth0(10.2.2.254)-routerA-serial0(10.1.1.254)-----fram-rela y----serial0(10.1.1.1)-routerB-eth0(10.3.3.254)---node(10.3.3.1) both routers run igrp 1 network 10.0.0.0 sh ip route from routerB i saw no ip route for 10.0.0.0 no ip route for 10.2.2.0 sh ip route from routerA i saw ip route for 10.3.3.0 is through 10.1.1.1 i still can ping from 10.3.3.1 to 10.2.2.1 also i can ping from 10.2.2.1 to 10.3.3.1 the question is that why i can ping from 10.3.3.1 to 10.2.2.1 from routerB there is no route to 10.2.2.1 why it does work? _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]