12-04-2023 11:46 AM
We are implementing a new DMVPN network on our production routers. It is in addition to 2 existing DMVPN's that we use.
We have a hub at Headquarters, and another Hub at our DR site.
We have a tertiary DR site where we are trying to implement.
When i issue a "sho ip nhrp" on our HQ router, we get the following output:
HQrouter#sho ip nhrp
10.101.2.3/32 via 10.101.2.3
Tunnel1 created 11w4d, expire 00:05:12
Type: dynamic, Flags: registered nhop
NBMA address: 10.140.0.27
10.101.2.8/32 via 10.101.2.8
Tunnel1 created 10w2d, expire 00:05:04
Type: dynamic, Flags: registered nhop
NBMA address: 10.140.0.20
10.101.2.27/32 via 10.101.2.27
Tunnel1 created 03:34:32, expire 00:04:58
Type: dynamic, Flags: unique registered nhop
NBMA address: 10.100.0.27
10.101.2.40/32 via 10.101.2.40
Tunnel1 created 1w2d, expire 00:04:40
Type: dynamic, Flags: registered nhop
NBMA address: 10.100.0.1
When i issue the same command on the DR router, it comes up thusly:
TertiaryDRrouter#sho ip nhrp
TertiaryDRrouter#
The configuration on the DR router is as follows:
interface Tunnel5
ip address 10.101.5.1 255.255.255.0
no ip redirects
ip mtu 1400
ip hold-time eigrp 13 30
no ip next-hop-self eigrp 13
no ip split-horizon eigrp 13
ip nhrp authentication cisco
ip nhrp network-id 100000
ip nhrp holdtime 360
ip tcp adjust-mss 1360
delay 1000
tunnel source Loopback100
tunnel mode gre multipoint
tunnel key 100000
My team and i are trying to figure out what is missing and why we do not have that same output on the DR router..
Any help would be greatly appreciated!
KMNRuser
12-04-2023 11:59 AM
This is bug
Remove
Ip nhrp shortcut <<- from spoke tunnel
Shut/no shut tunnel
And check again
MHM
12-05-2023 09:34 AM
MHM Cisco World,
Thanks for the response.
from the spoke router, i did remove the "ip nhrp shortcut" command, and then also issued the shut/no shut.
I then on the Hub router issued the "sho ip nhrp" command again, but without success > there is nothing returned.
What makes this more interesting is that when I perform a "sho ip int bri" command, it shows my tunnel as up..
When i issue the "sho ip nhrp" command on the spoke, it gives me the following:
SPOKERTR#sho ip nhrp
10.101.2.1/32 via 10.101.2.1
Tunnel1 created 10w3d, never expire
Type: static, Flags:
NBMA address: 10.101.1.1
10.101.3.1/32 via 10.101.3.1
Tunnel2 created 10w3d, never expire
Type: static, Flags:
NBMA address: 10.101.1.254
10.101.4.1/32 via 10.101.4.1
Tunnel3 created 10w3d, never expire
Type: static, Flags:
NBMA address: 10.101.1.253
10.101.1.254/32 via 10.101.1.254
Tunnel5 created 00:06:30, never expire
Type: static, Flags:
NBMA address: 10.101.5.1
SPOKERTR#
12-05-2023 09:51 AM
https://bst.cisco.com/bugsearch/bug/CSCwb59109https://bst.cisco.com/bugsearch/bug/CSCwb59109
It is bug' check if DR router in list.
MHM
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