Re: Impact to DMVPN Spoke-Spoke communications during Hub failur
If you are using dynamic routing protocol inside the tunnels, you will loose your routes once the Hub failed so there is nothing you can do, spoke-2-spoke communication is lost.
If you are using static routing and If the spoke already has a NHRP entry before the hub failed, it will use it. But if the remote spoke public address changed in the meantime, it will not work as there is no HUB to answer to the NHRP resolution request.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...