C2960X stacking

[nflnetwork]

Hello I was looking for the steps involved to add a C2960X switch to an existing stack - Can anyone please share the steps? is there anything to worry about as far as network outages or can it be done with no downtime? thx. 

[Deepak Kumar]

Hi,

Yes, you can do it without downtime if your stack is running in a ring topology. 

Steps:

In the New Switch, power on this switch without connecting to stack

1.By default, switches are numbered as 1. Renumber it to 4 if you are adding the 4th switch
switch# switch 1 renum 4

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
switch# wr mem
switch# reload

Change priority to 8 (as per your stack configuration)
switch# switch 4 priority 8
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
switch# wr mem
switch# reload

Turn Off the switch and connect stack cables now. DO NOT POWER IT ON NOW.

In the Existing Stack Switch

Provision the new switch, you can get the switch model details from show version command
switch#config t
switch(config)#switch 4 provision <full model number>
switch(config)# software auto-upgrade enable

Turn ON the new switch now.

Regards,

Deepak kumar

[nflnetwork]

hello what is the priority option used for? can you explain ?

[Deepak Kumar]

Hi,

A high priority value for a member increases the chance that it will be elected master and keep its member number. The priority value can be 1 to 15. The default priority value is 1. 

What is priority configured for your existing master? First, check priority configuration on the current stack and assign lower than your master stack or backup stack master. 

The new priority value takes effect immediately but does not affect the current master until the current master or the stack resets.

this is an optional command if you will not assign in new switch provisioning than its value may lower and will not become master until another switches are working. 

Regards,

Deepak Kumar