I'm using a Catalyst 3920 and some of my Routers has error message %TR-3-OPENFAIL: Unit 0, open failed: lobe media test, function failure The same routers tests fine on a MAU, and the same cables and switch test fine on another router... This particular routers just doesn't work with the 3920... Anybody encounter this before ? Is this a IOS issue... shouldn't be since I got the 12.05T on both routers... the one that failed is a 2612 and 2515 and the one working fine are 2513 and 2504..... Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=18454&t=18454 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]