I have 1 Root Bridge 350 connecting to 3 non-root bridge 350s - all within 500 feet. Connections hang and I can wake up sometimes by tracert. All units have the same problem. They have all been configured with quick setup. Take 340s - also configured with quick setup - and replace unit for unit - stays up forever. What is the difference between the 340 and 350 that would cause that - speed?
I to experienced the same problems that you are seeing. The fix I found was configuring the non-roots to be "non-root with clients" and this seems to fix that problem. This issue was resolved in 12.03T.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
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