Re: OSPF Drop on DMVPN

Hi Sameer,

This issue drove me crazy for at least 3 days trying to figure out.

I had the same issue with one of our customer. I guess your DMVPN was all
working before and all of sudden it has started dropping OSPF session.

The fix was upgrade to a new codes. Don't remember the version that I have
used but it was way back in Jan 2010. The bug was killing the OSPF adj
table.
You'll notice adj table will vanish before the ospf session drops.

I suggest jump onto the Cisco bug-tool and get the bugfree code.

HTH..

On Tue, Sep 28, 2010 at 8:27 PM, sameer inam <i_sameer_at_hotmail.com> wrote:

> interface Tunnel1
> description
>
> ip address 192.168.253.x 255.255.255.0
> no ip redirects
> ip mtu 1400
> ip nhrp authentication dmvpn
> ip nhrp map multicast 193.227.x.x
> ip nhrp map 192.168.253.1 193.227.x.x
> ip nhrp map multicast 94.200.x.x
> ip nhrp map 192.168.253.2 94.200.x.x
> ip nhrp map multicast 213.42.x.x
> ip nhrp map 192.168.253.3 213.42.x.x
> ip nhrp network-id 99
> ip nhrp holdtime 300
> ip nhrp nhs 192.168.253.1
> ip nhrp nhs 192.168.253.2
> ip nhrp nhs 192.168.253.3
> ip tcp adjust-mss 1360
> ip ospf network broadcast
> ip ospf hello-interval 30
> ip ospf priority 0
> load-interval 30
> qos pre-classify
> tunnel source FastEthernet0/0
> tunnel mode gre multipoint
> tunnel key 100000
> tunnel path-mtu-discovery
> tunnel protection ipsec profile CISCO
> !
>
>
>
>
>
>
>
>
>
> router ospf 1
> router-id 10.0.255.4
> log-adjacency-changes
> area 108 nssa no-summary
> network 10.0.80.1 0.0.0.0 area 108
> network 10.0.255.4 0.0.0.0 area 108
> network 192.168.253.4 0.0.0.0 area 108
> !
>
>
>
>
>
>
>
> > Subject: Re: OSPF Drop on DMVPN
> > To: i_sameer_at_hotmail.com; ccielab_at_groupstudy.com
> > From: togunsina_at_gmail.com
> > Date: Tue, 28 Sep 2010 10:08:29 +0000
> >
> > Hi, please post your configs. What kind of ospf networl are you running?
> > ------Original Message------
> > From: sameer inam
> > Sender: nobody_at_groupstudy.com
> > To: ccielab_at_groupstudy.com
> > ReplyTo: sameer inam
> > Subject: OSPF Drop on DMVPN
> > Sent: Sep 28, 2010 11:12
> >
> > Hello experts,
> >
> >
> >
> > I need some help , we have DMVPN cloud using OSPF one spoke site we have
> > dynamic IP address and we are having issue with OSPF keep dropping .GRE
> > tunnel stayed up . could you guys help me .
> >
> >
> >
> > thanks in advance
> >
> >
> >
> > kind regards,
> >
> >
> >
> > Sameer
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
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> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Best Regards, Tolulope Ogunsina, CCIE x2 (R&S|Sec)
>
>
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Received on Mon Feb 07 2011 - 23:50:38 ART