There is no ip addressing listed for R1 unless I missed it. You have subnetted the 192 network on each side of the 10.0.0.0 network. IGRP and RIP will do auto summary, which will confuse the BB router when talking to the 192 network..
The BB router probably wont know which way to send the packets to either side of the 192 network, since it sees a summary address of 192 on both sides of the router. Change the 10.0 net to a 192.168.x.x and see what happens. Larry Letterman Cisco Systems [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Friday, April 05, 2002 2:49 PM To: [EMAIL PROTECTED] Subject: FW: cisco lab [7:40625] im Sorry for not putting my ip address scheme i hope it makes more sense! sorry larry Im currently going over the routing class so i can practice for my ccie . I know its a good review and will help me have a more solid understanding of routing... i tried to make this simple scenario and for some reason its not working maybe im missing something. my setup is the following (s1) (s0)backbone router---s1-----r1 | |(e0) | | (SO) | | r4 (s1) r2(e0) | | | (s0) | r3 now i enable igrp 200 for all the router the serial links for r4 s0 10.1.1.1 /24 r4 s1 192.168.1.17 /28 backbone so is 10.1.1.100 /24 and s1 10.12.12.100 /24 and the serials for r3 192.168.1.18 /28 r2 e0 192.168.1.34/28 and 192.168.0.0 network. whe i do a ip route in backbone router for 192.168.X.x i get network not in table ? why?n if i am advertising it should't the other routers show it whithin their routing tables i have the running config if that helps I can ping from r3 to r4 however after but unable to get the backbone router same applies to the r2 i have on backbone router & r4 7r1 igrp 200 network 10.0.0.0 network 192.168.0.0 how come if all the routers are running the same routing protocol i cant see the 10.0.0.0 routers advertised Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=40651&t=40625 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]