I have a working site-to-site VPN, but I will need to change the IP Peer, is it possible to change the IP without having to redo all the Peer and tunnels?
No sure if you can rename these.
Normally, I use “show configuration commands” to see config commands as you type type, copy paste into text editor , search replace.
Then delete tunnel, and copy new one in
It depends on version
The rollling doesn’t use IP in peer name as it was before. So there is a separate section “remote-address”
set vpn ipsec site-to-site peer <connection-name> remote-address x.x.x.x