Neck on the line job here as I'm working at 5 in the morning, need to go to bed, so not enough time to check my answer. I'll have a dig at the fact that IGRP routing update broadcasts are being sent out to 255.255.255.255 on your ethernet. As all of your ethernet ports are connected to the same wire effectively, they all receive the update, but from a source address which they know is not supposed to be on their subnet. Gaz ""cisco guru"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > 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=9591&t=9591 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
