From: Nawaz, Ajaz (Ajaz.Nawaz@bskyb.com)
Date: Wed Jul 09 2003 - 14:35:31 GMT-3
hmm...
say if you have more than one path to a given destination...
would filtering in using dis list in the way you describe prevent you from
having the entry appear in the RT period ?
ajaz
-----Original Message-----
From: Logan, Harold [mailto:loganh@mccfl.edu]
Sent: 22 April 2003 01:47
To: Alec Pun; CCIE LAB (E-mail)
Cc: alec.cl.pun@pccw.com
Subject: RE: Distribute-list OUT for OSPF
Alec,
It has to do with OSPF operation. OSPF doesn't advertise routes, it
advertises link states. Every OSPF router in the same area is aware of all
of the networks in that area, so there is no way to filter outgoing updates
with the distribute-list command. You can however use the distribute-list in
command to prevent a route in the SPF database from showing up in the
router's routing table. That only affects that one router though; all other
routers in the area will learn the route.
If you want to filter LSA's with OSPF, check out the ip ospf database-filter
command.
hth,
Hal Logan
CCAI, CCDP, CCNP: Voice
Network Specialist / Adjunct Faculty
Computing & Engineering Technology
Manatee Community College
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Alec Pun
> Sent: Monday, April 21, 2003 12:43 PM
> To: 'CCIE LAB (E-mail)'
> Cc: alec.cl.pun@pccw.com
> Subject: Distribute-list OUT for OSPF
>
>
> Dear group,
>
> Would you mind to explain why distribute-list OUT can not be
> applied for
> OSPF? I've heard of some sayings related to OSPF link-state
> behaviour but
> still can't understand. Thanks! - alec
>
> 1601A(config)#router ospf 1
> 1601A(config-router)#distribute-list 1 out e0
> % Interface not allowed with OUT for OSPF
.
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