From: mathew Fer (mathew118@gmail.com)
Date: Wed Jan 17 2007 - 04:20:41 ART
Hello GS,
I read the above article. Please have a look as it is very interesting one.
URL - http://www.cisco.com/web/about/ac123/ac114/downloads/packet/pdf/PK182.pdf
Now I just have 2 questions for GS.
1. Is the self-tunnel safe to implement?
2. I have the below requirement and much appreciated if you can help
to come up with a suggestion based on the above configuration;
I have a static route - "ip route 0.0.0.0 0.0.0.0 Dialer 0 30" for
dial backup. dynamic routes learned from IGP are in routing table with
specific routes with /24 etc but not the default.
When we send originate a packet to a destination that does not match
the specific routes in routing table (learned by IGP), router tries to
dial the back up ISDN link (configured with Dialer 0 etc). In order to
stop this, I have done a route - "ip route 0.0.0.0 0.0.0.0 serial
0/0.1" but I want to avoid this static route to WAN link as it gets
congested etc. Is there a way to setup this 2nd static route to a
self-tunnel so that it get black-holed locally rather than sending out
to Serial 0/0.1 (WAN) while blocking unwanted dial ISDN calls?
I am thinking if there is a way to get this default (set to (serial
0/0.1) to an IP address configured on a self-tunnels and tunnel
destination being an IP address of other end of the Serial 0/0.1, it
should black-holed locally and when the Serial 0/0.1 is down, "ip
route 0.0.0.0 0.0.0.0 Dialer 0" will become active.
Can you please help me to get this configuration clearly?
Thanks in advance for your reply.
Thanks
Mathew
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