Hi,
When running IOS version 15.2(2)T1 on a particular DMVPN spoke (Cisco 881W-GN-A-K9), I'm able to establish a connection to the DMVPN - NHRP works, EIGRP works - no issues.
When I tried upgrading to 15.2(4)M5, NHRP no longer connects to the hub from that spoke, but I can still ping the external IP gateway of the hub router just fine. The ISAKMP and IPSEC connection establish:
IPv4 Crypto ISAKMP SA
dst src state conn-id status
xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx QM_IDLE 2004 ACTIVE
xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx QM_IDLE 2003 ACTIVE
The 'show ip nhrp nhs detail' command produces:
Legend: E=Expecting replies, R=Responding, W=Waiting
Tunnel0:
10.200.0.1 E priority = 0 cluster = 0 req-sent 22 req-failed 0 repl-recv 0
Tunnel1:
10.200.1.1 E priority = 0 cluster = 0 req-sent 22 req-failed 0 repl-recv 0
I verfied connectivity to the hub's external IP address so I know there's no issue there. Tunnel Encryption seems to work fine.
When I downgrade back to the previous version, the Tunnel/NHRP/EIGRP comes back up right on boot with no trouble.
Any thoughts? I could use a good suggestion here.
Thanks,
JP
