Hi, We have problem with one of our 3750 stack switch, stack connection between switch 2 & 3 is now down and not comming up even after replacing stack cable with new one. Please let me know if you have got any ideas. below output for your reference:
------------------ show switch detail ------------------
Current
Switch# Role Mac Address Priority State
--------------------------------------------------------
*1 Master 000f.f7f4.ce00 10 Ready
2 Member 000f.2425.cf00 1 Ready
3 Member 000f.f7f4.fe00 5 Ready
Stack Port Status Neighbors
Switch# Port 1 Port 2 Port 1 Port 2
--------------------------------------------------------
1 Ok Ok 2 3
2 Down Ok None None
3 Ok Down 1 None
------------------ show process cpu ------------------
CPU utilization for five seconds: 48%/0%; one minute: 8%; five minutes: 6%
------------------ show process memory ------------------
Total: 101589748, Used: 36344516, Free: 65245232
------------------ show logging ------------------
020489: .Jul 23 10:56:55: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state DOWN
020490: .Jul 23 10:57:54: %XDR-6-XDRIPCNOTIFY: Fatal IPC error occurred for peer in slot 2. Message not sent due to timeout. Disabling linecard
-Traceback= AFC798 21B434 BB9394 BBD6B0 BBDDDC BD04B8 908064 8FE62C
020491: .Jul 23 11:11:23: %PLATFORM_RPC-3-MSG_THROTTLED: RPC Msg Dropped by throttle mechanism: type 1, class 21, max_msg 8, total throttled 0
-Traceback= AFC798 576DA8 24EA0C 24EB50 24F5C8 24F7C0 908064 8FE62C
020492: .Jul 23 11:14:23: %PLATFORM_RPC-3-MSG_THROTTLED: RPC Msg Dropped by throttle mechanism: type 3, class 21, max_msg 8, total throttled 1
-Traceback= AFC798 576DA8 24EA0C 24EB50 24F5AC 24F7C0 908064 8FE62C
020493: .Jul 23 11:17:23: %PLATFORM_RPC-3-MSG_THROTTLED: RPC Msg Dropped by throttle mechanism: type 3, class 21, max_msg 8, total throttled 3
-Traceback= AFC798 576DA8 24EA0C 24EB50 24F5AC 24F7C0 908064 8FE62C
020494: .Jul 23 11:20:23: %PLATFORM_RPC-3-MSG_THROTTLED: RPC Msg Dropped by throttle mechanism: type 3, class 21, max_msg 8, total throttled 5
-Traceback= AFC798 576DA8 24EA0C 24EB50 24F5AC 24F7C0 908064 8FE62C
020495: .Jul 23 11:23:23: %PLATFORM_RPC-3-MSG_THROTTLED: RPC Msg Dropped by throttle mechanism: type 3, class 21, max_msg 8, total throttled 7
-Traceback= AFC798 576DA8 24EA0C 24EB50 24F5AC 24F7C0 908064 8FE62C
020496: .Jul 23 11:24:13: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state UP
Jul 23 11:05:23: TODO: Haven't heard from th RP. Disable (Data_Center_1-2)
020497: .Jul 23 11:24:13: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state DOWN
020498: .Jul 23 11:24:13: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state UP
Jul 23 14:19:47: %PLATFORM_RPC-3-MSG_THROTTLED: RPC Msg Dropped by throttle mechanism: type 5, class 20, max_msg 4, total throttled 0 (Data_Center_1-2)
-Traceback= AFC798 576DA8 4F8AA4 4FC004 908064 8FE62C (Data_Center_1-2)
Jul 23 15:00:09: %PLATFORM_RPC-3-MSG_THROTTLED: RPC Msg Dropped by throttle mechanism: type 5, class 20, max_msg 4, total throttled 3 (Data_Center_1-2)
-Traceback= AFC798 576DA8 4F8AA4 4FC004 908064 8FE62C (Data_Center_1-2)
020499: .Jul 23 15:05:11: %CLEAR-5-COUNTERS: Clear counter on interface GigabitEthernet2/0/11 by vty1 (10.52.30.50)
020500: .Jul 23 15:05:14: %CLEAR-5-COUNTERS: Clear counter on interface GigabitEthernet2/0/12 by vty1 (10.52.30.50)
020501: .Jul 23 15:05:19: %CLEAR-5-COUNTERS: Clear counter on interface GigabitEthernet2/0/13 by vty1 (10.52.30.50)
020502: .Jul 23 15:05:25: %CLEAR-5-COUNTERS: Clear counter on interface GigabitEthernet2/0/15 by vty1 (10.52.30.50)
020503: .Jul 23 15:05:28: %CLEAR-5-COUNTERS: Clear counter on interface GigabitEthernet2/0/16 by vty1 (10.52.30.50)
020504: .Jul 23 15:09:56: %CLEAR-5-COUNTERS: Clear counter on interface GigabitEthernet2/0/24 by vty1 (10.52.30.50)
020505: .Jul 24 05:52:08: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state DOWN
020506: .Jul 24 05:52:09: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has changed to state UP
020507: .Jul 24 05:52:10: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state DOWN
020508: .Jul 24 05:52:10: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has changed to state UP
All switches are running 12.2(25)SEE2 version. and switch is live from 1 year, 36 weeks. I cannot able to reboot the switch as production servers are online. Please let suggest if you got any ways to resolve this problem without reboot.
Regards
Chandu
