DMVPN options

[carl_townshend]

Hi Guys

We are looking at starting a DMVPN over our MPLS network.

We have 2 main hubs.

When you create the tunnel on the spokes and you put the config in for the hubs as below

Spoke2(config-if)#ip nhrp nhs 172.16.1.1
Spoke2(config-if)#ip nhrp nhs 172.16.1.2

Does it try them in top down order of preference?

Also, what is the recommendation, should we go single, or dual cloud DMVPN?

Cheers 

[MHM Cisco World]

each spoke have only one Hub connect to it BUT there is DMVPN tunnel health monitor can monitor the Hub and shift to other in case of failure.

https://www.cisco.com/en/US/docs/ios-xml/ios/sec_conn_dmvpn/configuration/15-2mt/sec-conn-dmvpn-backup-nhs.html

for single or dual can you confirm if the Spoke and DC have dual ISP ?

[balaji.bandi]

on the spoke you create 2 tunnels towards Hub1 and Hub 2  right ?

as per i know you can do with network id - ip nhrp network-id 1