From: steven.j.nelson@xxxxxx
Date: Mon Mar 04 2002 - 12:39:22 GMT-3
Yes that is correct.
Filter routes based on the access list that are coming (out) of OSPF and
into rip.
so distribute list (OUT) should be taken as OUT of the protocol into another
IGP in this case RIP.
Steve
-----Original Message-----
From: Paul Borghese [mailto:pborghese@groupstudy.com]
Sent: 04 March 2002 15:18
To: ccielab
Subject: Re: distribution lists in RIP
Ugh, of course! This is something that I seem to need to re-learn about
once a year. Thanks for the help! Now if only I can get my EIGRP
authentication to reliably work....
Paul
----- Original Message -----
From: "Jaeheon Yoo" <kghost@chollian.net>
To: "ccielab" <ccielab@groupstudy.com>; "John Neiberger" <neiby@ureach.com>
Sent: Sunday, March 03, 2002 7:22 PM
Subject: Re: distribution lists in RIP
> Yes, this is intuitively very confusing.
> So, I always think this command by adding "of" before a routing protocol.
>
> distribute-list 1 out (of) ospf 1
> <<-------------
>
> distribute-list 1 out int serial 0
> --------->>
>
> Jaeheon,
>
> ----- Original Message -----
> From: "John Neiberger" <neiby@ureach.com>
> To: "Paul Borghese" <pborghese@groupstudy.com>; <ccielab@groupstudy.com>
> Sent: Monday, March 04, 2002 7:34 AM
> Subject: Re: distribution lists in RIP
>
>
> >
> > This is one of those things that confuses me all the time.
> >
> > > router rip
> > > distribute-list 1 out ospf 1
> >
> > Intuitively, at least to me, this says to filter RIP routes
> > that match access-list 1 when redistributing to OSPF 1.
> > However, I don't think that's what it really does.
> >
> > I think it means "When redistributing routes from OSPF 1 into
> > RIP, filter out routes that match access list 1 before sending
> > them to other RIP neighbors." If I'm wrong I hope someone will
> > correct me.
> >
> > Regards,
> > John
> >
> >
> > ---- On Sun, 3 Mar 2002, Paul Borghese
> > (pborghese@groupstudy.com) wrote:
> >
> > > I have a configuration where I would like to redistribute
> > from RIP to
> > > OSPF.
> > > I would prefer to apply a filter to limit my distributions.
> > I am
> > > running
> > > RIP on an ethernet interface and OSPF on a serial interface.
> > When I
> > > apply
> > > the command:
> > >
> > > router rip
> > > distribute-list 1 out ospf 1
> > >
> > > It filters the RIP updates out the ethernet interface. So
> > the router
> > > seems
> > > to ignore the fact that I told it to only filter when
> > redistrbuting into
> > > OSPF and instead filters regular rip updates. Here is some
> > debugging
> > > output:
> > >
> > > Before applying distribute-list 1 out ospf:
> > > --------------------------------------------------------------
> > ------
> > > 02:24:10: RIP: sending v1 update to 255.255.255.255 via
> > Ethernet0
> > > (190.27.2.3)
> > > 02:24:10: RIP: build update entries
> > > 02:24:10: network 87.0.0.0 metric 7
> > > 02:24:10: network 180.70.0.0 metric 7
> > > 02:24:10: subnet 190.27.1.0 metric 7
> > > 02:24:10: subnet 190.27.10.0 metric 7
> > > 02:24:10: subnet 190.27.11.0 metric 7
> > > --------------------------------------------------------------
> > -----------
> > >
> > > Notice there are a number of routes being advertised out E0.
> > >
> > > Now I will apply the command:
> > > --------------------------------------------------------------
> > --------------
> > > --
> > > R7(config-router)#router rip
> > > R7(config-router)#distribute-list 1 out ospf 1
> > > R7(config-router)#
> > > 02:24:15: RIP: Distribute-list changed: sending triggered
> > update
> > > R7(config-router)#
> > > 02:24:35: RIP: sending v1 update to 255.255.255.255 via
> > Ethernet0
> > > (190.27.2.3)
> > > 02:24:35: RIP: build update entries - suppressing null update
> > > --------------------------------------------------------------
> > --------------
> > > --------
> > >
> > > Notice the update did not have any entries. So the command
> > > distribute-list
> > > 1 out ospf 1 blocks routes from leaving the ethernet
> > interface.
> > >
> > > Why?
> > >
> > > Paul Borghese
> > >
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