Hello groupstudy, The problem is that when I configure and no shut the interfaces they just bounce between up and down every few seconds. I can put up a "loopback diagnostic" and ping each interface ok. I have connected a 3640 and a 2600 each with an ATM OC3 card back to back. I suspect I have not installed the two multimode fiber cables properly. I have searched CCO but can't find instructions for cabling the back to back configuration. I am using Caslow's book for the ATM configuration. I just read in the ATM section of the All-In-One CCIE Lab Study Guide about using one fiber cable for the back to back config vs. two cables to a switch but which cable to which jack?? I won't have access to my lab again until Monday or I'd be cable swapping right now. If anyone has any info on this I would greatly appreciate hearing from you... TIA, Tom -- Tom Keough, CCNP MCSE CCIE Candidate [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=20061&t=20061 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
