If you see, interface up/line protocol down, most common cause is encapsulation mismatch or clocking problem. With serial it is usually clocking and DCE/DTE issue. You should duble check that and also the interface statistics.
Nadeem ====== dr_sukhi wrote > Respected Seniors and Friends in the group, > > In Cisco 2620 router, I have configured 2 WIC-A/S cards for three 64k leased > lines. All worked until all stopped working suddenly. Other ports, ISDN etc. > are fine. Serial lines show LINE PROTOCOL DOWN. When I reboot the router one > card starts working, when I reboot again, both start working. Fine. Again > after some days suddenly they stop functioning. I have changed one of the > cards but again this happens suddenly. The other side router is OK and the > LeaseLine modems are also surely fine. > > I am sure somebody can answer why this happens, I cannot doubt the serial > cards. Is the IOS image faulty or the router hardware faulty? Thanks in > advance. > mailto:[EMAIL PROTECTED] > S.Singh > CCNP > India > > > Get Your Private, Free E-mail from Indiatimes at http://email.indiatimes.com > Buy Music, Video, CD-ROM, Audio-Books and Music Accessories from > http://www.planetm.co.in -- ==================== Ishrat Nadeem Zahid CCNP Cisco Systems,Inc. Chelmsford, MA 01824 Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=35456&t=35379 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
