DMVPN Trouble

fsanchez · ‎08-07-2008

Hi, I've deployed Dynamic Multipoint VPN (DMVPN) technology with one Hub (7206VXR GP2) and one Spoke (C2801) each one have a Tunnel0 interface and use EIGRP to pass route back and forthâ€¦ When the DMVPN interfaces were configured and NHRP registration occurred, all looked good but within 10 sec, randomly it down and up again, the output console logs indication of failure is the EIGRP neighbor down. Can someone help me? I've done everything but the problem steel remaining. Thanks

Marwan ALshawi · ‎08-07-2008

try to increase the lifetime of the tunnel

singhsaju · ‎08-08-2008

Hi,

Can you post configuration from both sides ?

Also post show crypto ipsec sa , show crypto isakmp sa .

what do you see in logs of the routers ?

fsanchez · ‎08-08-2008

I'm sorry for the inconvenience, but I have resolved the problem creating a new EIGRP autonomous system on Hub and adding a network using wild card mask.

router eigrp 100

redistribute static

network 10.0.0.0

network 172.31.0.0

no auto-summary

### new router autonomous system ####

router eigrp 90

network 10.0.0.0 0.0.0.255

no auto-summary

Other trouble that I had was that RDP (think client) on the â€œspokeâ€ side can't connect to a RDP Server. I've corrected it modifying the MTU and mss values.

Interface Tunnel0

ip mtu 1372

ip tpc adjust-mss 1332

Once again, thanks for answer me..