NHRP Gre Tunnel Unstable

Unanswered Question
Feb 20th, 2007

I have a strange problem,

I have multiple ADSL Lines arround the country and

i have one static point on the Internet, so what i have done is i have used the static point as my spoke router and the "CORE" Adsl point as my junction point for the rest of the ADSL GRE tunnels to land.I am running multipoint NHRP and this works fine. After a while the site goes down but the GRE Tunnel stays up i just cant route the private network through the Tunnel unless i ping the other end

of the tunnel. Can auone suggest anything ?

I have this problem too.
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purohit_810 Tue, 02/20/2007 - 10:43

Can you give us Some configuration , which you have configured both end.

Regards,

Dharmesh Purohit

marvin00001 Wed, 02/21/2007 - 00:04

Hi there

Static Point

interface Tunnel666

ip address 192.168.20.x 255.255.255.0

no ip redirects

ip nhrp authentication (word)

ip nhrp map multicast dynamic

ip nhrp network-id 1

ip ospf network broadcast

ip ospf priority 2

tunnel source Ethernet0/0

tunnel mode gre multipoint

tunnel key 1

tunnel protection ipsec profile p1

ADSL Core (Landing Point for Other ADSL)

interface Tunnel666

ip address 192.168.20.2 255.255.255.0

no ip redirects

ip nhrp authentication (word)

ip nhrp map 192.168.x.x 196.x.x.x

ip nhrp map multicast 196.3.x.x

ip nhrp network-id 1

ip nhrp nhs 192.168.20.x

no ip split-horizon

ip ospf network broadcast

ip ospf priority 0

keepalive 10 3

tunnel source Dialer1

tunnel mode gre multipoint

tunnel key 1

tunnel protection ipsec profile p1

ADSL Site (CPE)

interface Tunnel666

ip address 192.168.20.x 255.255.255.0

no ip redirects

ip nhrp authentication (word)

ip nhrp map 192.168.20.x 196.x.x.x

ip nhrp map multicast 196.x.x.x

ip nhrp network-id 1

ip nhrp holdtime 300

ip nhrp nhs 192.168.20.1

ip ospf network broadcast

ip ospf priority 0

keepalive 10 3

tunnel source Dialer1

tunnel mode gre multipoint

tunnel key 1

tunnel protection ipsec profile p1

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