Following document explain procedure to expand existing 3650 stack.
#############################################################
Pre-deployment activity:
1 Backup configuration of existing stack.
2 Verify existing stack status using.
- show switch : Ensure all switches are in ready state and have appropriate priority set.
- show inventory
- show version
- show run | inc provision
3. Identify the number < Switch Number> which should be given to switch that will be added in existing stack.
4. Provision new switch on existing stack using configuration command.
- Switch < Switch Number> provision
- Verify status using – ensure new switch is in provisioned state
- Save the configuration.
5. Ensure auto-upgrade is enabled on existing stack ( global configuration command)
software auto-upgrade enable
6. On new switch, in case old switch is re-used erase the configuration.
7. By default switch will number to 1 / switch 1. Renumber this switch to new number.
- Switch 1 renumber < Switch Number>
- Reload the switch.
8. After reboot verify switch configuration / setting.
- Show switch
9. Provision switch 1 on new switch.
10. Stack new switch
11. Power on stack ( it might take 15 – 20 minute for new switch become member of existing stack.
12. Verify stack.
13. Set stack priority for new member in stack.
14. Save the configuration.