DMVPN : How this is possible?

[abhisar patil]

Dear All,

We have DMVPN in our network with 1 hub and 3 spokes.When hub goes down spoke2 and spoke3 link doesnt goes down but
spoke 1 to spoke3 link goes down and spoke1 to spoke2 we have site to site VPN so doesnt goes down when hub is
down.

I want to know why spoke2 and spoke3 link is up when hub is down?

Also  we have configured static routes between spoke2 to spoke3 with next hop  as tunnel ips of both the location.So is this the reason?and if so then  how tunnel IPs are getting in routing table of spoke2 and spok3?

Abhisar.

[Peter Paluch]

Hi Abhisar,

Can you please enclose the configurations of your routers, including the show ip route and show ip nhrp command outputs?

Best regards,

Peter

[Giuseppe Larosa]

Hello Peter,

Abhisar had opened two threads

he was using static routes so after NHRP resolution if the hub dies the two spokes can still talk to each other on the spoke to spoke tunnel.

Hope to help

Giuseppe

[Peter Paluch]

Hello Giuseppe,

Oh, I see. That explains the issue, then. Thank you for your update!

Best regards,

Peter