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No link lights on 3750X-24 port

william.briere
Level 1
Level 1

Hi,

I have a 3750X stack with two switches in the stack that have 24 ports. There are some ports on the switches that do not have the green link light indicator illuminated, however at the command prompt the same ports show up-up. The switches are running the version listed below. Is there something other then a hardware issue I should be looking at here?

Cisco3750X#sh ver
Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 12.2(53)SE2, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Wed 21-Apr-10 05:11 by prod_rel_team
Image text-base: 0x00003000, data-base: 0x02400000

ROM: Bootstrap program is C3750E boot loader
BOOTLDR: C3750E Boot Loader (C3750X-HBOOT-M) Version 12.2(53r)SE1, RELEASE SOFTWARE (fc1)

.

Thanks in advance...

2 Replies 2

Jay Reed
Level 1
Level 1

I've had some issues out of my 3750 stack.  Here's what I would try.  Console in, sh int gix/x and make sure that that when you pull the cable the port shows down down rather than up up.  If it still shows up up after the cable has been pulled, then make sure you are looking at the correct switch in the stack.  I've often times got confused with which one I was looking at.........especially if I am remote.  If you still show up up on the port and the cable is pulled then a reboot is warranted.  The 3750 stack that we have is at our DR and is the core for that setup.  We've had some funky stuff like that happen and it has had to be rebooted which fixes the problem usually..........sometimes a 2nd reboot has to be performed ?.    BTW we're running.

Cisco IOS Software, C3750 Software (C3750-ADVIPSERVICESK9-M), Version 12.2(25)SEE2, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2006 by Cisco Systems, Inc.

Compiled Fri 28-Jul-06 12:55 by yenanh

Image text-base: 0x00003000, data-base: 0x01256754

ROM: Bootstrap program is C3750 boot loader

BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(25r)SEE4, RELEASE SOFTWARE (fc1)

glen.grant
VIP Alumni
VIP Alumni

  What position is the mode indicator in ?  Those lights can mean multiple things depending which position the mode indicator is in .

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