From: Alex Steer (alex.steer@eison.co.uk)
Date: Thu Oct 11 2007 - 16:05:35 ART
I would say no. It makes no difference if this case.
You may use the suppress-map in the scenario where you want to only
advertise the summary address AND 10.10.1.0/24 - 10.10.10.0/24 for
example.
I'd use the top one ;)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
shiran guez
Sent: 11 October 2007 17:17
To: Cisco certification
Subject: BGP SUMMARY vs SUPPRESS
*Hi*
**
*I would like to know if there is a difference between the following
scenario:*
**
aggregate-address 10.0.0.0 255.252.0.0 summary-only
nei x.x.x.x remot-x
nei x.x.x.x unsuppress-map 10_UNSUP
ip prefix-list OPEN_10 permit 10.0.0.0/16
ip prefix-list OPEN_10 permit 10.1.0.0/16
ip prefix-list OPEN_10 permit 10.2.0.0/16
ip prefix-list OPEN_10 permit 10.3.0.0/16
Route-map 10_UNSUP
match ip address prefix OPEN_10
*to the following scenario:*
aggregate-address 10.0.0.0 255.252.0.0 suppress-map 10_UNSUP
nei x.x.x.x remot x
nei x.x.x.x unsuppress-map 10_UNSUP
ip prefix-list OPEN_10 permit 10.0.0.0/16
ip prefix-list OPEN_10 permit 10.1.0.0/16
ip prefix-list OPEN_10 permit 10.2.0.0/16
ip prefix-list OPEN_10 permit 10.3.0.0/16
Route-map 10_UNSUP
match ip address prefix OPEN_10
as when I tested it it look like it is giving the exact same result but
with
the summary-only a little bit less confusing as far as configuration.
-- Shiran Guez MCSE CCNP NCE1 http://cciep3.blogspot.com http://www.linkedin.com/in/cciep3
This archive was generated by hypermail 2.1.4 : Fri Nov 16 2007 - 13:11:13 ART