Can someone let me know what firmware/IOS version they're running on their 3750s for a redundant UCS setup? We ran into a problem last week with our northbound connection to UCS and when we contacted Cisco support, we were told the version we were running had a bug. With that being said, we've already tried running 3 different versions with no luck.
Here's a detailed explanation of what's going on with our environment: http://terenceluk.blogspot.com/2010/07/problem-with-ucs-northbound-connection.html
If you have an environment up that's been stable for awhile, can you post your 3750 firmware and UCS firmware versions? Thanks.