BGP: suppress-map vs unsuppress-map and logic

From: Wouter Prins (wp@null0.nl)
Date: Sat Jan 17 2009 - 09:58:04 ARST

hi group,

I was wondering why the unsuppress-map feature exists if you can use
matching logic in combination with a suppress-map?
Is the unsuppress-map giving other possibilities then the suppress-map
option, i cannot find which one that would be?

What i mean is the following to unsuppress routes using the suppress-map:

<snippet>
aggregate-address 10.0.0.0 255.252.0.0 suppress-map UNSUPPRESS
!
ip prefix-list 10.3.0.0 seq 5 permit 10.3.0.0/16
!
route-map UNSUPPRESS deny 10
 match ip address prefix-list 10.3.0.0
route-map UNSUPPRESS permit 20
</snippet>

Thanks! 

--
Wouter Prins

Blogs and organic groups at http://www.ccie.net

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