[Xorp-users] Xorp does not see ospf hello packets in a gre tunnel

[Ben Greear]

On 05/10/2011 03:40 PM, Ricardo Sepulveda wrote:
> Hi Everyone,
>
> I am having issues with Xorp not seeing the hello packets from a neighbored Cisco router over a gre opennhrp/dmvpn tunnel.
>
> In my setup the Xorp and Cisco router neighbor up fine over the gre tunnel (ethernet) and allow data to pass across.
> The issue is that Xorp will not see any of the hello packets that come across the tunnel from the Cisco router after the successful convergence.  Data moves until the dead timer runs down. It then starts back up after the systems re-converge.
>
> The Cisco accepts the hello's from Xorp over the tunnel and I can see the hello's come into the Xorp interface from the Cisco.
>
> As a test I’ve played with the hello intervals and router dead intervals on the Cisco and Xorp systems but it has made no difference.
>
> With no tunnels the systems converge and the dead timers update regularly.
>
> I have tested this in Quaga but I do not have this issue with the hello's.
>
> Any ides on what the issue might be?

Please let us know the OS, kernel version, xorp version, and perhaps the xorp
logs...

You might try poking through the logs yourself to see if you see anything interesting...

You could also sniff the interface to make sure pkts are being properly received by
the OS.

Thanks,
Ben

>
> Thanks
> Ricardo S.
>
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-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com