From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Tue Nov 16 2004 - 19:23:29 GMT-3
Sammie,
You need to do it with a route-map that references either the
outgoing interface or the next-hop. This is a new feature as of
12.2(15)T
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft
/120limit/120s/120s24/routmap.htm
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> CCIE Sammie
> Sent: Tuesday, November 16, 2004 4:13 PM
> To: ccielab@groupstudy.com
> Subject: RE: Distribution lists on OSPF
>
> I have tried this in the past with limited success. The inbound
> distribution list works if you do not specify an interface. For
example:
>
> distribution-list 1 in
>
> But if you use the form:
>
> distribution-list 1 in serial 1
>
> Preventing the route that from using S1, neither route is blocked.
>
> So it is possible to totally block a route from appearing in the
> forwarding table, but I need to only prevent one of the two pathways.
>
> Suggestion?
>
> S.
>
> Brian McGahan <bmcgahan@internetworkexpert.com> wrote:
> Actually you can do this with a distribute-list inbound. It
> will not remove the LSA from the database but it will remove its
> associated route from the routing table. Note that other routers in
the
> area will still have the LSA, and therefore this type of configuration
> may result in a traffic black hole.
>
>
> HTH,
>
> Brian McGahan, CCIE #8593
> bmcgahan@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987 x 705
> Outside US: 775-826-4344 x 705
> 24/7 Support: http://forum.internetworkexpert.com
> Live Chat: http://www.internetworkexpert.com/chat/
>
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of
> > Hoonpongsimanont, Chalermchai
> > Sent: Monday, November 15, 2004 9:27 PM
> > To: CCIE Sammie; ccielab@groupstudy.com
> > Subject: RE: Distribution lists on OSPF
> >
> > No, you can't. The basic rule is all OSPF router should have
identical
> > link
> > state database.
> >
> > What you can do, is use area filter command at the ABR, or database
> filter
> > command. The area filter command can filter link state database
> between
> > different areas. The database filter will filter all link state
> > advertisement.
> >
> > Hope this help,
> > David
> >
> >
> >
> > -----Original Message-----
> > From: CCIE Sammie [mailto:cciesammie@yahoo.com]
> > Sent: Tuesday, November 16, 2004 3:36 AM
> > To: ccielab@groupstudy.com
> > Subject: Distribution lists on OSPF
> >
> > Hi,
> >
> > I am new to the group ... so I hope this has not already been
> > discussed.
> >
> > Is it possible to use a distribution list to filter OSPF updates in
> > from an interface? So for example, if I have two interfaces S1 and
> S2, is
> > it possible to filter the receipt of a particular OSPF route in from
> S1
> > but allow it in from S2. This will cause that route to point out S2
> > and not S1.
> >
> > Thanks!
> >
> > CCIE Sammie!
> >
> >
> >
> > ---------------------------------
> > Do you Yahoo!?
> > Discover all thats new in My Yahoo!
> >
> >
>
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