Prefix List Filtering DEFAULT route

From: Herbert Maosa (asawilunda@googlemail.com)
Date: Thu Apr 17 2008 - 11:05:44 ART


Looks like I still have a lot to learn about filtering using prefix lists. I
am finding it unusual that

   - ip prefix-list DEFAULT_ONLY permit 0.0.0.0/0 will correctly filter
   out all routes and send only the default when used
withdistribute-list prefix DEFAULT_ONLY out in
   RIP
   - ip prefix-list NO-DEFAULT deny 0.0.0.0/0 will NOT stop the default
   from being sent out when used with distribute-list prefix NO-DEFAULT out
   in RIP.

Educate me here.
I managed to stop the default from being sent out with

   - ip prefix-list THIS-WORKS permit 0.0.0.0/0 ge 1 when used with
distribute-list
   prefix THIS-WORKS out in RIP

Herbert.

Pass the CCIE in six weeks, Guaranteed!
http://www.certscience.com/CCIE



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