Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements
Webcast-Catalyst9k
New Member

NHRP stops working after IOS Upgrade

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

Everyone's tags (4)
1 REPLY
New Member

NHRP stops working after IOS Upgrade

Anyone have any insight? I'm still having this issue and haven't had any luck with it.

212
Views
0
Helpful
1
Replies
CreatePlease to create content