Add new Switch to Cisco Stack Switch

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Prerequisite for adding new Switch to existing Stack:

  • Upgrade IOS to match the stack switch version
  • Make sure the licenses or feature sets are similar (for example IP Base)

Configuration Steps:

In the New Switch

1.By default, switches are numbered as 1. Renumber it to 3 if you are adding the 3rd switch

switch# switch 1 renum 3
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

  1. Change priority to 8

switch# switch 3 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

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

 

In the Existing Stack Switch 

  1. Provision the new switch, you can get the switch model details from show version command

switch#config t
switch(config)#switch 3 provision WS-C3850-24P

  1. Turn ON the new switch now.
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