RE: Cannot use "Distribute-List" on OSPF Routing Context (OSPF

Remember that in OSPF (unlike RIP and EIGRP), all information must be known to
all routers in an area. This is a prerequisite for the Shortest Path First
algorithm. So if you were able to filter some of the information out using
distribute lists, this fundamental principle would be violated and the
algorithm would lead to some funky results. That's the reason why filtering
is done on the borders of other areas (ABRs and ASBRs).

Thanks,

Jacob Uecker
CCIE# 24481

Development Engineer
CCBOOTCAMP - Cisco Learning Partner (CLP)
Toll Free: 877-654-2243
International: +1-702-968-5100
Skype: skype:ccbootcamp?call
FAX: +1-702-446-8012

YES! We take Cisco Learning Credits!

Training And Remote Racks: http://www.ccbootcamp.com

-----Original Message-----
From: nobody_at_groupstudy.com on behalf of backbone systems
Sent: Fri 8/7/2009 3:44 AM
To: Warakorn Sae-Tang
Cc: ccielab_at_groupstudy.com
Subject: Re: Cannot use "Distribute-List" on OSPF Routing Context (OSPF VRF
Routing)

u can use the only "in" option bc u r filtering the routes from
database to routing table......its not like rip where u drop the
routes recieved from the neighbor based on the filter.

On Fri, Aug 7, 2009 at 8:38 AM, Warakorn Sae-Tang<kornrono_at_gmail.com> wrote:
> Update information,
>
> After test more, I can use "distribute-list in". But cannot use
> "distribute-list out" command.
>
> (config-router)#no distribute-list 1 in
>
> (config-router)#distribute-list 1 out gigabitEthernet 5/2
> % Interface not allowed with OUT for OSPF
> (config-router)#
>
> So, OSPF not support only distribute-list "out" command.
>
> Please suggest me.
>
> Best Regards,
> Warakorn Sae-Tang
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Fri Aug 07 2009 - 04:44:23 ART