Hello, I need to change the hub's public IP-address. The only way to reach the spokes is through the tunnel.
Action plan was to change the nhrp maps in the spokes first, then at last to change the hubs public IP. This didn't worked, because the tunnels always stay up and keep the "old" IP address.
I added ISKMP keepalives, tunnel nhrp holdtime and tunnel keepalive; but without success.
The only way to get the spokes accepting the new IP-address, is to shut,no shut the tunnel. But this cuts my own branch off.
Question: Does anyone knows a way, that lets DMVPN tunnels realize a connection loss, clear nhrp cache and rebuild a tunnel to a new destination without rebooting spokes?
Thanks and regards Peter