I have two individual port channels made up of two ISL's over DWDM links. I have had some (still to be identified) problems with the links and there are a lot of errors on one port. How do I reset the interface stats? Looking at an error number in the 10000's doesn't do much for me. A change in the single digits would be better as I think I might have discovered the problems. Telling the interface to ignore bit errors also has made my life easier.
Thanks for the info. I cleared the interface fc counters and also the port-channel counters hoping it would clear the Errors and Discards seen in the switch Device Manager Summary GUI. It didn't. Any ideas on how to do that?
Also, while looking at the syslog output, I noticed some link failures and then:
%PORT-5-IF_DOWN_LOOPBACK_ISOLATION %$VSAN XX%$ Interface fcx/x is down (Isolation due to port loopback to same switch).
What does that mean? The system at the other end is having problems.
I've run into this about 2 years ago when connecting ISL's between 2 Cisco 9509's going over DWDM. For about 2 weeks thought it was Qwest (teleco) or our Nortel gear that our light was going through at the MPOP (sp?). Turned out our new Cisco 9509 switch at our DR site had a clock failure that was only diagnosed when a local Cisco engineer came in with a Finisar to see what was going on.
During the troubleshooting stage and before we knew we had a clock failure, I put a hard loopback on the fiber just before our Cisco 9509 at our DR site pointing towards our production site. This validated the Qwest network and Nortel gear was good and the port on our Cisco 9509 at our production site went into a "loopback isolation". It does this when the switch is seeing his own signal.
Introduction This article will help you understand the steps on how to
download the UCS licenses from the Cisco Systems website and then
installing it on the UCS. The redacted (blue lines) just covers up
certain numbers for privacy please do not take them...
Introduction This article will help you understand and educate the
customer on how to clear their "expired licenses"
(license-graceperiod-expired) from their UCS-M. If a customer just
purchased a license and needs a step by step guide on how to download
Introduction Prepositioning is a powerful tools on the WAAS platform but
it is not always easy to figure out why your jobs are failing when
trying to retrieve the files.Here is a method that should help you to
figure out the reason why they are not succes...