Re: OSPF --) prefix-suppression

From: Bryan Bartik <bbartik_at_ipexpert.com>
Date: Tue, 27 Oct 2009 10:00:09 -0600

Hello,

ISIS has a similar capability with the per-interface command "no isis
advertise-prefix" or the isis process command "advertise passive-only."

Here is a link to the ISIS and OSPF versions:

http://www.cisco.com/en/US/docs/ios/12_4t/12_4t15/ht_osmch.html
http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fsisiadv.html

The feature helps speed up convergence in a large network because you have
reduced the number of routes. Perhaps it might be beneficial in an MPLS VPN
topology, where all you need is loopback routes and nothing else...I haven't
tested it though.

On Tue, Oct 27, 2009 at 9:42 AM, Wouter Prins <wp_at_null0.nl> wrote:

> Hi Andrew,
>
> This is something completely different then 'eigrp stub'. AFAIK with this
> feature you can avoid connected interfaces from being announced although
> they are covered by network statements.
>
> 2009/10/27 ALL From_NJ <all.from.nj_at_gmail.com>
>
> > Similar as the default EIGRP stub feature? Seems this way ... Only not
> as
> > versatile with it's options ...
> >
> > Any thoughts?
> >
> > Thoughts on how a question would be worded? "keep router 4 from being a
> > transit router and ensure that none of the routers will choose R4 ...,
> > maintain all ospf blah blah blah. you cannot use the max- metric
> command
> > and must enable this with one global command"
> >
> > Also team, if any of you all have done this, perhaps on the spoke
> routers,
> > please respond as well.
> >
> > Command reference:
> >
> >
> http://www.cisco.com/en/US/docs/ios/iproute/command/reference/irp_osp2.html#wp1014135
> >
> > Feature overview:
> >
> >
> http://www.cisco.com/en/US/docs/ios/iproute/configuration/guide/irp_ospf_ex_lsa_ps6441_TSD_Products_Configuration_Guide_Chapter.html
> >
> > --
> > Andrew Lee Lissitz
> > all.from.nj_at_gmail.com
> >
> >
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> >
> >
> >
>
>
> --
> Wouter Prins
> wp_at_null0.nl
> 0x301FA912
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
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-- 
Bryan Bartik
CCIE #23707 (R&S), CCNP
Sr. Support Engineer - IPexpert, Inc.
URL: http://www.IPexpert.com
Blogs and organic groups at http://www.ccie.net
Received on Tue Oct 27 2009 - 10:00:09 ART

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