DMVPN ip NHRP never expires on remote end

Feb 24, 2006 1 Replies
W

Hi All



Creating DMvpn with one central site and 6 remote. Problem is if problem on internet IP NHRP never expires on remote ends. as a result when internet returns tunnels do not reconnect to central site. problem can be fixed by reseting tunnels interfaces at remote end. I have set IP NHRP Hosltime to 60 but this makes no difference.



When command Show IP NHRP is done at remote end it flags expire never.



interface Tunnel1 bandwidth 256 ip address 172.30.1.2 255.255.255.0 no ip redirects ip mtu 1400 ip nhrp authentication dmvpn ip nhrp map multicast dynamic ip nhrp map 172.30.1.1 x.x.x.x ip nhrp map multicast x.x.x.x ip nhrp network-id 99 ip nhrp holdtime 300 ip nhrp nhs 172.30.1.1 no ip route-cache cef no ip route-cache no ip mroute-cache ip ospf network broadcast delay 100 tunnel source Dialer1 tunnel mode gre multipoint tunnel key 1000 tunnel protection ipsec profile mymap Any help would highly appreciated



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J

what is interesting traffic bringing up the dialer1 interface ?

As the tunnel1 is being sourced from a dialer this plays into nhrp's problem.

I would specify only dmvpn related traffic (gre/esp) can bring up the link (remember once the link is brought up any traffic not denied in interface acl's can pass that is routable on that dialer interface).

Also is the ip address the dialer1 interface gets dynamic ?

When there are problems and you enter show ip nhrp does it reference the old dialer dhcp isp address ?

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