Check your configuration carefully. I had this exact problem once when I was activating a router which has two connections for the same location arriving on two different routers through serial links. By a mistake, I reversed the links. Then, I was able to ping the other side but IGRP was receiving updates from the wrong networks. In your example, you may be receiving an update destined to network 20.1.1.1 on the link that should be at network 10.1.1.1. Check if configurations on IGRP match exactly on both sides of the links. ER CCNA ----- Original Message ----- From: "cisco guru" To: Sent: Friday, June 22, 2001 3:38 AM Subject: Debug ip igrp events - error or notification msg??? [7:9480] Hi, I have 6 routers connected back to back running on igrp 100. These routers are also connected to a common switch via Ethernet. The networks are unique for each Eth. and Ser. When I do a debug ip igrp trans or events on R1, I see the following msg. pop up "received update from invalid source 30.1.1.1" Same on R2 for 10, 30, 40 etc. etc. BTW: The ethernets are 10.1.1.1, 20.1.1.1, 30.1.1.1 etc. etc..... Is this an error msg. or notification? Is this due to the fact that all the routers are connected via serial and also via Ethernet to a common switch, and hence the error? Please advise. Thank you. Kind regards. _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=9534&t=9534 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
