Hi,
I am trying to reproduce a scenario to implement at a customer. in short I would like to run ISIS routing over DMVPN tunnels.
with much troubleshooting, I discovered that the soonest I enable tunnel mode gre multipoint the isis routing give and error. (ISIS-Adj: Point-to-point IIH received on multi-point interface: ignored IIH) here is an example of one router cfg.
interface Loopback1
ip address 192.168.247.1 255.255.255.0
interface Tunnel0
bandwidth 1024
ip address 10.10.30.1 255.255.255.0
ip mtu 1500
ip router isis
ip nhrp authentication bajdmvpn
ip nhrp map multicast 192.168.247.2
ip nhrp map 10.10.30.2 192.168.247.2
ip nhrp network-id 100000
ip nhrp holdtime 300
ip nhrp nhs 10.10.30.2
ip nhrp cache non-authoritative
qos pre-classify
cdp enable
tunnel source Loopback1
tunnel mode gre multipoint
tunnel key 100000
ip router isis
router isis
net 49.0001.1921.6824.7001.00
is-type level-2-only