One of our 4006 swotch start hanging more frequently and only why to recover it by rebooting it. To get more information about the issue I setup a external syslog server. The message I received in syslog server before the switch hang up is as below:
Jan 24 16:40:12 C4006-440-Dre.sv.sc.philips.com 2002 Jan 24 16:39:25 %SPANTREE-2
-RX_1QNON1QTRUNK: Rcved 1Q-BPDU on non-1Q-trunk port 1/2 vlan 440
Jan 24 16:40:12 C4006-440-Dre.sv.sc.philips.com last message repeated 5 times
Any one have idea what that mean and what need to perform to solve the problem.
Thanks for reply. Actually I checked the trunk configuration and it's seem to me fine. We have two uplinks 1/1 & 1/2. 1/1 is active where as 1/2 is blocked. I'm not sure that the switch is hanging becuase of this issue. What I know that the trunk configuration is correct and this message is always recoreded on syslog server before switch hang.
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
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