From: Courtney Foster (cfoster@xxxxxxx)
Date: Tue Nov 06 2001 - 13:27:08 GMT-3
You are awesome!...As soon as I read this I realize that was the
problem...the Tunnel will have a better metric...appearing as being only
one hop away...
Thank you...
-----Original Message-----
From: SFeldberg@edeltacom.com [mailto:SFeldberg@edeltacom.com]
Sent: Tuesday, November 06, 2001 11:21 AM
To: Courtney Foster
Cc: ccielab@groupstudy.com; nobody@groupstudy.com
Subject: Re: Flapping Tunnel Interface
Search the archives for "Recursive Routing Loops". Tunnel flapping is
caused by one end of the tunnel trying to reach the tunnel destination
ip address through the tunnel itself. Think about it, and you will
realize why that cannot happen and why it causes the tunnel to fail.
You need to disallow your tunnel source/destination IPs from being
advertised by your IGP through the tunnel.
Steve
"Courtney
Foster" To:
<ccielab@groupstudy.com>
<cfoster@cnr. cc:
edu> Subject: Flapping Tunnel
Interface
Sent by:
nobody@groups
tudy.com
11/06/2001
11:03 AM
Please
respond to
"Courtney
Foster"
Hello,
Has anyone ever encountered a problem with flapping Tunnel
interfaces.
I configured a GRE/IP tunnel over the internet...One side of the tunnel
showed UP/UP always...the other side of the tunnel showed UP/UP for 20
seconds...then shows UP/DOWN for a couple of minutes...then goes UP/UP
for 20 seconds...
Please give me some feed back on this...also...does anyone know of a way
to disable keepalives on a Tunnel interface...
Courtney Foster
Sr. Network Engineer
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