Hi It should be R1 doing all the bridging using IRB but no bridging should be involved (aside from the DLSw) for R5 and R7. However, the answer has IRB on R5 and TB on R1 and R7. I don't agree with that. anyway has any suggestion? Thanks _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11024&t=11024 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]