Switch not recognized in stack

[Scott Payne]

I have created a stack with 5 switches. The problem that I am having is only four switches are being recognized. Stackwise cables look correct. So I checked the IOS on the problem switch and even put another basic config on it. when i use: sh ip int brief the switch does not show. So I unplugged the switch from the stackwise cable while logged onto master. It showed that switch 2 was disconnected and after I added back to the stack via stackwise cable it showed that that the switch had been added to the stack. However, it never showed up when i executed the sh ip int brief.

The LED on the front of the switch show just the top two as green. Generally that shows up when there is only one switch not configured. Any help would be appreciated.

[atif.awan]

Do you see any logs when you insert this switch into the stack? It could be that it is being put in a version mismatched state and the master is not able to automatically upgrade it to the correct IOS. Issue the 'show switch' command and paste the output here.

[Scott Payne]

Here is the sh log followed by sh ip int brie. you will notice that it recognizes the switch when i plugSite-179-3750-11#sh log

Syslog logging: enabled (0 messages dropped, 1 messages rate-limited, 0 flushes,

0 overruns, xml disabled, filtering disabled)

Console logging: level debugging, 130 messages logged, xml disabled,

filtering disabled

Monitor logging: level debugging, 0 messages logged, xml disabled,

filtering disabled

Buffer logging: level debugging, 130 messages logged, xml disabled,

filtering disabled

Exception Logging: size (4096 bytes)

Count and timestamp logging messages: disabled

File logging: disabled

Trap logging: level debugging, 166 message lines logged

Logging to 172.16.250.254, 166 message lines logged, xml disabled,

filtering disabled

Log Buffer (4096 bytes):

KMGR-6-SWITCH_ADDED_VM: Switch 2 has been ADDED to the stack (VERSION_MISMATCH)

*Feb 28 18:10:34: %STACKMGR-6-SWITCH_ADDED_VM: Switch 2 has been ADDED to the st

ack (VERSION_MISMATCH) (Site-179-3750-11-4)

ed to state UPged in the new stackwise cable. but sh ip in brie does not list it. switch number 2 is missing.

Site-179-3750-11#sh ip int brie

Interface IP-Address OK? Method Status Protocol

Vlan1 10.23.1.11 YES NVRAM up down

Vlan252 unassigned YES TFTP down down

FastEthernet1/0/1 unassigned YES unset down down

--deleted--

FastEthernet3/0/1 unassigned YES unset down down

[atif.awan]

Your logs indicate that the new switch has been put in version mismatch state. The switch will not be recognized as a legitimate stack member if it is in version mismatch state. Usually the logs tell you how to upgrade the IOS on that switch so that you can upgrade it to the correct IOS of the stack. You should go through the document available at the following link as it will give you a better idea as to how to manage the 3750 switch stacks:

http://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_guide_chapter09186a0080476820.html#wp1189785

[alakhtanov]

Hello !

I have the same problem: at 3750 stack new member switch has the newest version IOS and doesn't recognized by stack master.

How is it possible to upgrade the stack to the newest IOS version remotely (I have access to this stack only through the LAN)?

May be here some problems during the software upgrade ?