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Our campus had an outage and we are trying to find the cause. Something caused all 40 of our 2950 devices fibre uplinks and most of the stacking GBIC's to go in to err-disable mode and not recover. It was NOT just a local event. This outage spanned a...
Thanks to Travis for starting this post and all the great suggestions by other posters.Our site was running AD 2008 with 2012 schemas. We authenticate wireless and VPN clients against AD via ACS 5.4.0.46.0. AD was upgraded to 2012 in 2008 functionali...
Excellent. Thanks very much. This is the first answer that actually makes sense. Cisco had the right answer after we raised the TAC, but they didn't really seem to care about the cause. I would be curious to hear their response to your question. If y...
Thanks skarundi. I made a typo regarding the IOS. It should have read 12.1(14)EA1. In our case, the interfaces went err-disable and stayed there. We either had to console into the switches and shut/no shut the port (time consuming) or power cycle. we...
