Set up Cisco Catalyst 9300 as the second switch in the stack

[beta_admin66]

Hello,

I would like to set up a second Cisco Catalyst 9300 switch in the stack. Is there a network outage? Does the stack need to be restarted?

Thank you

[marce1000]

-    No to both : https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9300/software/release/16-5/configuration_guide/stck_mgr_ha/b_165_stck_mgr_ha_9300_cg.pdf

 M.