07-04-2007 02:44 PM - edited 03-05-2019 05:08 PM
I get a LOOPBACK error message on my 2950 switch which disables the port. What should I check for ? I have no idea where to start. Whats causing this?
07-04-2007 06:07 PM
Can you please post the exact error and also the output from typing
show interfaces status err-disabled
07-04-2007 07:43 PM
There was a bug filed but it was junked, because it is mostly caused by a STP loop or bad cabling. The following bug more details on this
http://www.cisco.com/cgi-bin/bugtool/onebug.pl?bugid=CSCea46385
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/12220se/3750smg/msg_desc.htm#wp98430
You might also want to consider err-disable recovery. You can enable it using
2950-A#conf t
Enter configuration commands, one per line. End with CNTL/Z.
2950-A(config)#errdisable recovery cause loopback
HTH, rate if it does
Narayan
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide
Log in to Community
