04-15-2010 03:08 AM - edited 03-04-2019 08:10 AM
Hi there,
I am having a strange issue with the stack on standard 3750 switches (not -E). Most of the time the stack seems to be unstable as logs below are saying, up to a point when it restarts itself. I have tried different cables and different code, running the latest one now, no difference at all... From Cisco website they are saying it is rather a hardware issue?
switch01#show switch
Switch/Stack Mac Address : m
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master mac1 15 0 Ready
2 Member mac2 14 0 Ready
3 Member mac3 1 0 Ready
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Down Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Down Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Down
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 None None
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 None None
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 None None
2 None None
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 None None
2 None None
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 None None
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 None None
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 None None
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 None None
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 None None
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 None None
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 None None
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 None None
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 None None
2 None None
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 None None
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 None None
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 None
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 3 2
2 1 3
3 2 1
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Down Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Down Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
switch01#sh switch stack-ports
Switch # Port 1 Port 2
-------- ------ ------
1 Ok Ok
2 Ok Ok
3 Ok Ok
04-15-2010 03:43 PM
Can you provide more information?
1. What IOS are you running?
2. If stack keeps crashing, can you post the crashinfo?
3. Can you check that remaining flash memory? The stack could be doing a boot-crash-loop. It crashed, boot and since there's no more remaining flash memory crash again.
If it is doing a boot-crash-loop, power down the entire stack for about 15 seconds and power up the stack one-at-a-time starting with the stack master.
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