Switch Stacking

[Jeff Horton]

I am configuring switch stacks containing a c3850-24u and a c3850-12s... I have configured two stacks like this but they required two different interface configurations... One stack had the 24U as G1/*/* and the 12S as G2/*/*.. The other stack had the 24U as G2/*/* and the 12S as G1/*/*... Is there a configuration that needs to happen in order for all the configurations to be the same? I have look into switch priorities but that didn't seem to help.. Can someone guide me in the direction of setting this up?

Jeff

[julijime · Accepted solution]

Hi Jeff,

If I understand correctly, you're looking on how to renumber the stack members. Having the 24U switches to be G1/*/*, is this correct?

In that case you would need to change the switch identity rather than the priority, and that can be achieved with the following commands:

Stack#switch 1 renumber 2

WARNING: Changing the switch number may result in a configuration change for that switch.  The interface configuration associated with the old switch number will remain as a provisioned configuration.  Do you want to continue?[y/n]y 

Stack#switch 2 renumber 1

WARNING: Changing the switch number may result in a configuration change for that switch.  The interface configuration associated with the old switch number will remain as a provisioned configuration.  Do you want to continue?[y/n]y 

Stack#wr 

Stack#reload

Please be aware that the interface configuration will not be swapped after you renumber the switches. So for example, if you had an Host connected to interface Gi1/0/1 after you renumber the switches, now Host will be connected to interface Gi2/0/1, however the configuration associated to interface Gi1/0/1 will not be ported to interface Gi2/0/1

HTH

Julio

[Jeff Horton]

Thought I had tried that myself... I will give this another try and let you know what the results are.

Thanks,

Jeff

[paul driver]

Hello

I agree with Julio

Rrenumber the switch(s) within the stack and also I guess a reload is required

res

Paul

[Jeff Horton]

This is what I needed.. I figured out what I was doing wrong before.. I never did write the memory after the renumber commands.

Thanks for your directions....

Jeff Horton