3750X strange behavior
notgoing2fail
Member Posts: 1,138
in CCNP
I have a strange behavior for two 3750X's that I'd like to ask for anyone who has stacked these up.
First let me explain the setup and what works.
1) I have two switches. (Switch01 and Switch02)
2) Switch01 is set to master and Switch02 is slave.
Now, I know that the switches are properly stacked because the main console becomes the Switch01 console. Even when you jump on Switch02 console, it displays "Switch01#" on the console. The original MGMT IP address of Switch02 no longer works as that is now Switch01's MGMT IP address.
The strange behavior that I see is that on the main LED lights on the front panel, the MASTER LED correctly displays on SWITCH01.
But when I reboot Switch02 and it comes back up, it takes over the MASTER LED??? The light on Switch01 goes dim.
If I reboot Switch01, then it takes over the master led again.....why does this happen? Shouldn't the Master Led display on the switch in which I have manually set to as master? In this case Switch01....
On a side note, even when Switch02 takes over the Master LED, the main console is still Switch01, so nothing really changes from the logical unit point of view....
Thoughts anyone? I don't have access to these switches at the moment.....
First let me explain the setup and what works.
1) I have two switches. (Switch01 and Switch02)
2) Switch01 is set to master and Switch02 is slave.
Now, I know that the switches are properly stacked because the main console becomes the Switch01 console. Even when you jump on Switch02 console, it displays "Switch01#" on the console. The original MGMT IP address of Switch02 no longer works as that is now Switch01's MGMT IP address.
The strange behavior that I see is that on the main LED lights on the front panel, the MASTER LED correctly displays on SWITCH01.
But when I reboot Switch02 and it comes back up, it takes over the MASTER LED??? The light on Switch01 goes dim.
If I reboot Switch01, then it takes over the master led again.....why does this happen? Shouldn't the Master Led display on the switch in which I have manually set to as master? In this case Switch01....
On a side note, even when Switch02 takes over the Master LED, the main console is still Switch01, so nothing really changes from the logical unit point of view....
Thoughts anyone? I don't have access to these switches at the moment.....
Comments
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Ryan82
Member Posts: 428
Interesting. You could try running a couple debugs when you gain access:- debug platform stack-manager sdp—Displays the Stack Discovery Protocol (SDP) debug messages.
- debug platform stack-manager ssm—Displays the stack state-machine debug messages.
Creation and Management of Catalyst 3750 Switch Stacks - Cisco Systems
HTH -
notgoing2fail
Member Posts: 1,138
Interesting. You could try running a couple debugs when you gain access:
- debug platform stack-manager sdp—Displays the Stack Discovery Protocol (SDP) debug messages.
- debug platform stack-manager ssm—Displays the stack state-machine debug messages.
Creation and Management of Catalyst 3750 Switch Stacks - Cisco Systems
HTH
Thanks for the debug commands, I'll have access to the switches again at some point.
I've read a link like the above before but not exactly the one you provided. Either Cisco revamped the 3750 config guide or they have multiple ones....