Hi dear,
Im working to setup new DSVPN topology to connect many spokes to dual hubs in datacenter by using two tunnel interfaces from spokes to each hub.
Physical peering is done by using OSPF on a 1 process and second peering via nhrp tunnels by using a second OSPF process and different area.
I can successfully register to spoke with the first hub and build the OSPF adjency but the second tunnels still protocol down from the same spoke to the second Hub.
I use for each tunnel P2p ip subnet and it is advertised via OSPF. Network reachability was verified between spoke and two hub using the physical ip addresses using for NHRP peering.
OSPF and MGRE using P2Mp between spokes and Hubs.
I don't found any documentation for this scenario using two tunnel interfaces from Spoke to Hub.
I have experience the Actif/standby tunnel registration from Spoke to Hub by using a using tunnel interfaces to connect to the two hubs and its working well.
Please check advise and help to use two tunnel interfaces from Spoke to Hub.
Thanks.

