switch acts like it rebooted but shows up over 5 weeks! 1

[jimfixit]

Anyone ever seen this with 3750 stack? I have 2 3750's in a stack, suddenly they appeared to reboot...traffic frozen, devices unable to respond to the ping tool that monitors them...looked at the stack..all amber lights as you see on a power up.

The show ver says the stack has been up over 5 weeks but the show logging specifically shows where today it was reset, went through a master stack election process, initialized the vlans and brought up their interfaces...am attaching results of show ver and portions of log. It looks to me like one of the two switches (swithc 1) just powerd off and back on for some reason, forcing number 2 to take over...

LON_5FL_3750#show ver
Cisco IOS Software, C3750 Software (C3750-ADVIPSERVICESK9-M), Version 12.2(46)SE, RELEASE
SOFTWARE (fc2)
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Thu 21-Aug-08 15:43 by nachen
Image text-base: 0x00003000, data-base: 0x01940000

ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(25r)SE1, RELEASE SOFTWARE (fc)

LON_5FL_3750 uptime is 5 weeks, 6 days, 8 hours, 53 minutes


LON_5FL_3750#show logging
Apr 29 17:23:10 UTC: %STACKMGR-4-SWITCH_REMOVED: Switch 1 has been REMOVED from the stack
Apr 29 17:23:10 UTC: %STACKMGR-4-MASTER_ELECTED: Switch 2 has been elected as MASTER of th
e stack
Apr 29 17:23:11 UTC: %CFGMGR-6-APPLYING_RUNNING_CFG: as new master
000014: Apr 29 17:23:11 UTC: %SYS-6-CLOCKUPDATE: System clock has been updated from 17:23:
11 UTC Wed Apr 29 2009 to 17:23:11 UTC Wed Apr 29 2009, configured from console by vty0.
000015: Apr 29 17:23:11 UTC: %SYS-6-CLOCKUPDATE: System clock has been updated from 17:23:
11 UTC Wed Apr 29 2009 to 17:23:11 UTC Wed Apr 29 2009, configured from console by vty0.
000016: Apr 29 17:23:11 UTC: %SSH-5-ENABLED: SSH 1.99 has been enabled
000017: Apr 29 17:23:13 UTC: %LINK-3-UPDOWN: Interface Vlan1, changed state to up
000018: Apr 29 17:23:13 UTC: %LINK-3-UPDOWN: Interface Vlan20, changed state to up
000019: Apr 29 17:23:13 UTC: %LINK-3-UPDOWN: Interface Vlan30, changed state to up
000020: Apr 29 17:23:14 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, change
d state to up
000021: Apr 29 17:23:16 UTC: %SYS-6-LOGGINGHOST_STARTSTOP: Logging to host 10.1.3.214 Port
514 started - CLI initiated
000022: Apr 29 17:23:16 UTC: %STACKMGR-5-MASTER_READY: Master Switch 2 is READY
000023: Apr 29 17:24:32 UTC: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 2 has chan
ged to state UP
000024: Apr 29 17:24:32 UTC: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 2 has chan
ged to state UP
000025: Apr 29 17:26:54 UTC: %STACKMGR-4-SWITCH_ADDED: Switch 1 has been ADDED to the stac
k
000026: Apr 29 17:27:02 UTC: %STACKMGR-5-SWITCH_READY: Switch 1 is READY
000027: Apr 29 17:27:02 UTC: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 1 Switch 1 has chan
ged to state UP

 

[vipergg]

Make sure the stack cables are tight , we had to use screwdriver to get them tight just don't overtighten them and strip them. Also they have had some issues with stack cables in the past so you may want to try and replace them if you have a couple.

 

[jimfixit]

good call, man. forgot about those pesky things. they were tight but when I went back behind unit the power cord on one switch was barely hanging in there...probably got knocked about by the telco guy who was out last week and doing stuff on teh wall field.

thanks!

 

[burtsbees]

I'd give him a star...that's just me...

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