RE: summary route

From: Richard Dumoulin (richard.dumoulin@vanco.es)
Date: Sun May 30 2004 - 23:04:59 GMT-3


I don't see how you would end up advertising the route. With the prefix-list
you are just allowing it.
I can see three options:
--Aggregate command
--"auto-summary" + "network 156.1.0.0" under the bgp process.
--you summarise in igp and redistribute it into bgp ,

As the first two options use bgp summary features I would do the last one,

HTH,

--Richard

-----Original Message-----
From: Ahmed Mustafa [mailto:ahmed.mustafa@sbcglobal.net]
Sent: lunes, 31 de mayo de 2004 3:44
To: ccielab@groupstudy.com
Subject: summary route

If I want to announce a summary route of my internal network towards the
Backbone router, and not allowed to use the route-summary in BGP.

Will the following solution work:

ip prefix-list TOBB permit 156.1.0.0/16 -------------------> Assuming my
internal network is comprise of 156.1.0.0/16 network, and scattered
throughout the netowork with /24 bit mask.

router bgp 100
neighbor 1.1.1.1 remote-as 230
neighbor 1.1.1.1 prefix-list TOBB out

I didn't use the command aggregate-address. I am assuming by saying not use
route-summary means I can't use aggregation.

The implicit deny at the end should block all the longer routes.

Please advise



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