ā01-18-2023 02:24 AM - edited ā01-18-2023 02:31 AM
HI Experts and friends,
We use DMVPN and Eigrp as routing protocols to Connect between sites. I am facing a peculiar issue.
The dmvpn Hub router shows tunnel up for the spoke IP router but the spoke router is stuck in the NHRP state.
Hub:
WAN-RT-01#sh dmvpn
Legend: Attrb --> S - Static, D - Dynamic, I - Incomplete
N - NATed, L - Local, X - No Socket
T1 - Route Installed, T2 - Nexthop-override, B - BGP
C - CTS Capable, I2 - Temporary
# Ent --> Number of NHRP entries with same NBMA peer
NHS Status: E --> Expecting Replies, R --> Responding, W --> Waiting
UpDn Time --> Up or Down Time for a Tunnel
==========================================================================
Interface: Tunnel20, IPv4 NHRP Details
Type:Hub, NHRP Peers:19,
# Ent Peer NBMA Addr Peer Tunnel Add State UpDn Tm Attrb
----- --------------- --------------- ----- -------- -----
1 195.73.222.85 10.0.0.11 UP 23:40:33 D
Spoke :
Type:Spoke, NHRP Peers:4,
# Ent Peer NBMA Addr Peer Tunnel Add State UpDn Tm Attrb
----- --------------- --------------- ----- -------- -----
1 69.199.183.34 10.0.0.1 NHRP 23:55:25 S
Kindly help to troubleshoot the issue. I can ping the public IP addresses of the two sites its working fine and I worked with the provider told me there is no issue between the source and the destination.
Solved! Go to Solution.
ā01-19-2023 01:51 AM
Hi Paul,
if i do sh ip nhrp , it shows this only. Can you please explain where to find socket
BLR-RT02#Sh ip nhrp
10.0.0.1/32 via 10.0.0.1
Tunnel20 created 1d23h, never expire
Type: static, Flags:
NBMA address: 69.199.183.34
ā01-20-2023 03:13 AM - edited ā01-20-2023 03:14 AM
I success get the issue,
I do lab try
add ACL in
add ACL out
no success until I figure out that the issue is Spoke change the interface IP, it can if router use DHCP or Dailer interface,
I change the interface IP of spoke and I get same issue as you
Hub show UP
spoke show NHRP
so your problem is Spoke is change the IP
OR
if all hub show UP and only one show NHRP, then there new NAT device add between the Spoke and Hub make Spoke IP change.
ā01-23-2023 11:33 PM
Its was a provider issue . they rerouted the path and it resolved the issue. port 50,51,500,4500 are the essential ports
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide