I don't think Cisco publishes what the hex codes mean after the "new serial state = 0xnnnn" line. Anyone know? I did find reference to something generic that read "hardware has interrupted the software." You seem to have a lot going on in that regard. Every four or five seconds on both ends of the link you are experiencing one or more hardware interrupts. As a last resort, I would look into control lead options (no pulse, ignore dcd, etc). Actually, the TAC would certainly have access to those code values so they would be my true last resort.
It's difficult to say which is the horse and which is the cart. Are your routers not successfully exchanging keepalives because of the hardware activity or is your hardware activity the result of not exchanging keepalives? If I recall, dtr is supposed to pulse once, then again in 5 seconds, and then every 30 seconds until the protocol comes back up. I have no idea what dcd and dsr are supposed to do when running as a dce. Scott Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=36517&t=36423 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]

