From: Ian Blaney (ian.blaney@gmail.com)
Date: Sun Nov 12 2006 - 15:29:05 ART
Udo
With prefix lists you have the option to match on subnet mask length. In
your statement you say ge 22 le 23 which will match all routes with a subnet
mask length of 22 or 23. The reason you see no routes are due to the
implicit deny at the end and all your routes having a /24 mask.
Ian
On 11/12/06, Udo <ccie_groupstudy@yahoo.de> wrote:
>
> Hi all,
>
> I had the following test environment
> R1---------R2--------R3
> I would like to filter routing updates coming from R1 to R2
> R1 and R2 are speaking RIP v2.On R1 are networks 192.168.10-20.0/24
>
> Is it possible to filter with a prefix-listthe networks
> 192.168.12-14.0/24 ? I configure :
>
> ip prefix-list RED_RIP_ROUTES seq 5 permit 192.168.8.0/21 ge 22 le 23
>
> But when I apply this to the distribute-list command all routes are
> denied...
>
> Right now I'm not shure if I understand how prefix-list's are work
>
> Thx
>
> Udo
>
>
>
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