From: Scott Morris (smorris@ipexpert.com)
Date: Fri Mar 30 2007 - 08:42:24 ART
Recursive routing simply means that after bringing your tunnel up and your
routing over the tunnel up, whatever method you chose all of a sudden wants
to prefer THROUGH the tunnel to get to the network you tagged as "tunnel
destination".
Don't do that. :)
Whether you use static routes (Cisco's CCO Doc example), or whatever else,
the rule is that the method you used to reach the tunnel destination network
BEFORE the tunnel was up should be the same path AFTER the tunnel is up.
How to fix this? Depends on the specifics of your scenario. Changing
administrative distance is certainly the quick method I would look at. We
can change AD for an entire protocol, or for a specific route.
If you are running OSPF both inside and outside the tunnel, you may have
more complicated issues (OSPF's intra versus inter versus external path
selection cannot be changed). In which case you need to look for a
different interface to use as the tunnel destination on the other side.
But philosophically, if the tunnel doesn't exist you can't use the tunnel
for getting to the tunnel to build the tunnel. :) Chicken vs. egg.
Cheers,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI-M/JNCI-J
IPexpert VP - Curriculum Development
IPexpert Sr. Technical Instructor
smorris@ipexpert.com
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
defindapatel@gmail.com
Sent: Friday, March 30, 2007 2:13 AM
To: ccielab@groupstudy.com
Subject: Recursive routing
I have a tunnel with keeps going up and down because of recursive routing.
What is the best way to get around this?
This archive was generated by hypermail 2.1.4 : Sun Apr 01 2007 - 06:35:53 ART