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Bronze

NHRP: Bad checksum

Hi,

We get bad checksum using the following config:

A:network tnip1

; -- IP Tunnel Net Configuration --

enable

mode gre multipoint

source ppp1

path-mtu-discovery

nhrp enable

nhrp authentication dmvpn

nhrp holdtime 300

nhrp map multicast x.x.x.x

nhrp map 172.16.0.1 255.255.255.0 x.x.x.x

nhrp nhs 172.16.0.1

nhrp record

encapsulation

; -- GRE Configuration --

checksum

key 100000

exit

B:!

interface Tunnel1

description MULTI-POINT GRE TUNNEL for BRANCHES

bandwidth 1000

ip address 172.16.0.1 255.255.255.0

no ip redirects

ip nhrp authentication dmvpn

ip nhrp map multicast dynamic

ip nhrp holdtime 300

tunnel source x.x.x.x

tunnel mode gre multipoint

tunnel key 100000

tunnel checksum

!

debug:

Oct 12 08:12:48.505 UTC: NHRP: netid_in = 0, to_us = 1

Oct 12 08:12:48.505 UTC: NHRP: Bad checksumsrc 172.16.0.2 dst 172.16.0.1

Oct 12 08:13:04.592 UTC: NHRP: Receive Registration Request via Tunnel1 vrf 0, packet size: 81

regards

bjornarsb

2 REPLIES
Silver

Re: NHRP: Bad checksum

Upgrade 12.3(3.9)T to fix the problem.

Bronze

Re: NHRP: Bad checksum

We are running :

(C2800NM-ADVENTERPRISEK9-M), Version 12.4(10)

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