From: Larson, Chris (CLarson@usaid.gov)
Date: Wed Mar 26 2003 - 10:20:08 GMT-3
You may be getting recursive routing loops. This is where one end of the
tunnel is found thru the tunnel interface. Routes to the far end of the
tunnel should be found outside of the tunnel interface and not thru it. This
may be why it flaps. If it goes up and down up and down it may be a loop.
You can also check this by getting a snapshot of your routing table before
the tunnel goes down and then again after. If you notice a route missing in
the delta between configs then that is prolly the route causing
recursiveness.
> -----Original Message-----
> From: Hunt Lee [SMTP:huntl@webcentral.com.au]
> Sent: Tuesday, March 25, 2003 11:15 PM
> To: 'Brian Dennis'
> Cc: 'ccielab@groupstudy.com'
> Subject: RE: token ring (Frame over a GRE Tunnel)
>
> Hi Brian,
>
> For doing this FR over a GRE tunnel, do you ever have any problems on the
> frame-relay pvc just died out...
>
> I have used it on a few labs, and on every lab, quite often all of a
> sudden,
> the 2 x Frame routers won't be able to ping their opposite Async nor
> Tunnel
> interface (even it says up up). But if I do a shut & no shut on the async
> interface, then it will work again (until it suddens dies again).
>
> Have you had any similar experience before?
>
> Once again, thanks so much for your help.
>
> Regards,
> Hunt
>
>
>
> -----Original Message-----
> From: Brian Dennis [mailto:brian@labforge.com]
> Sent: Wednesday, 5 March 2003 2:34 AM
> To: 'Alexander Arsenyev (ETL)'; ccielab@groupstudy.com
> Subject: RE: token ring (Frame over a GRE Tunnel)
>
>
> Frame-Relay Switching over a GRE Tunnel
>
> http://www.labforge.com/configs/frameswitch.htm
>
>
> Brian Dennis, CCIE #2210 (R&S/ISP Dial/Security)
> brian@labforge.com
> http://www.labforge.com
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