From: Herve Bruyere (hbruyere@cisco.com)
Date: Wed Feb 19 2003 - 07:16:08 GMT-3
balaji.balakrishnan wrote:
> Hi Group,
>
> This is about using extended access-list to filter bgp routes instead of prefix-list . For example, if you want to
> permit only 10.132.0.0/16 and filter more specific routes, I believe the access-list should be
>
> permit ip 10.132.0.0 0.0.255.255 host 255.255.0.0
>
> But, can anyone explain me, how to interpret the following access-list entries,
>
In my opinion:
> permit ip 10.0.0.0 0.255.255.255 host 255.255.255.255
matches all 10.x.x.x routes having /32 mask
> permit ip host 172.12.10.208 host 255.255.255.252
matches 172.12.10.208/30
> deny ip 172.12.10.0 0.0.0.255 any
matches 172.12.10.0/24 /25 /26 /27 ....
>
> Rgds,
> Bala.
>
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