NHRP encapsulation error
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04-12-2010 03:56 AM - edited 03-04-2019 08:07 AM
I'm configuring a point to multipoint which is the following:
interface Tunnel1
ip address 10.0.0.2 255.255.255.0
no ip redirects
ip mtu 1440
ip hold-time eigrp 90 120
ip nhrp authentication <key>
ip nhrp map multicast <public ip>
ip nhrp network-id 1
ip nhrp nhs 10.0.0.1
tunnel source FastEthernet0/0
tunnel mode gre multipoint
tunnel key 0
end
And I'm getting the following error:
*Mar 1 01:40:47.695: NHRP: Setting retrans delay to 64 for nhs dst 10.0.0.1
*Mar 1 01:40:47.695: NHRP: Attempting to send packet via DEST 10.0.0.1
*Mar 1 01:40:47.699: NHRP: Send Registration Request via Tunnel1 vrf 0, packet size: 83
*Mar 1 01:40:47.699: src: 10.0.0.2, dst: 10.0.0.1
*Mar 1 01:40:47.699: NHRP: Encapsulation failed for destination 10.0.0.1 out Tunnel1
*Mar 1 01:41:37.751: NHRP: Setting retrans delay to 64 for nhs dst 10.0.0.1
*Mar 1 01:41:37.755: NHRP: Attempting to send packet via DEST 10.0.0.1
*Mar 1 01:41:37.755: NHRP: Send Registration Request via Tunnel1 vrf 0, packet size: 83
*Mar 1 01:41:37.755: src: 10.0.0.2, dst: 10.0.0.1
*Mar 1 01:41:37.759: NHRP: Encapsulation failed for destination 10.0.0.1 out Tunnel1
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05-02-2010 06:46 AM
Hi,
I finaly did the sniffing on the spoke side.
But, all pings from that router can monitor a reply. And not the one through 10.0.0.1 (the hub tunnel side) unless the public IP of the hub can show a reply.
Any idea??
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08-23-2010 04:19 AM
Just in case somebody else runs into the same problem. I resolved it with a shut/no shut on tunnel interfaces...
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08-24-2010 03:25 AM
Also, try to check authentication key, because it will show you that something is wrong with authentication only if you enable debug nhrp packet

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