From: iron_tri (iron_tri@msn.com)
Date: Thu Nov 13 2003 - 11:59:36 GMT-3
Yes.
----- Original Message -----
From: "ccie2be" <ccie2be@nyc.rr.com>
To: "iron_tri" <iron_tri@msn.com>; "Joe Chang" <changjoe@earthlink.net>;
<ccielab@groupstudy.com>
Cc: "Brian Dennis" <bdennis@internetworkexpert.com>
Sent: Wednesday, November 12, 2003 7:45 PM
Subject: Re: ISIS to OSPF redistribution
> Does that mean that to get these routes into OSPF, redist connected is
> needed?
>
>
> ----- Original Message -----
> From: "iron_tri" <iron_tri@msn.com>
> To: "Joe Chang" <changjoe@earthlink.net>; <ccielab@groupstudy.com>
> Cc: "Brian Dennis" <bdennis@internetworkexpert.com>
> Sent: Wednesday, November 12, 2003 8:12 PM
> Subject: Re: ISIS to OSPF redistribution
>
>
> > I took a class from Brian Dennis/Brian Mcgahan; and I believe that Brian
> > Dennis gave the following explanation for this redistribution scenario:
> The
> > router sees the participating ISIS routes (they are also connected
routes)
> > on R1 as CLNS routes, not IP routes, even though you are running ISIS
for
> > IP. Therefore, they don't get marked as IP routes in the routing
> database,
> > and they are not marked to be forwarded into another IP Routing protocol
> > upon redistribution because they are marked in the database as CLNS
> routes.
> >
> > Brian?
> >
> >
> > ----- Original Message -----
> > From: "Joe Chang" <changjoe@earthlink.net>
> > To: <ccielab@groupstudy.com>
> > Sent: Wednesday, November 12, 2003 1:58 AM
> > Subject: ISIS to OSPF redistribution
> >
> >
> > > This issue was raised here a few years back in the archives, but
wasn't
> > > resolved.
> > >
> > > R1 redistributes ISIS into OSPF:
> > >
> > > router ospf 1
> > > redistribute isis level-1-2 subnets
> > >
> > > ISIS is configured on the local router as such:
> > >
> > > router isis
> > > net 49.0001.0000.0000.0001.00
> > > passive-interface lo0
> > >
> > > int s1/0.1
> > > ip router isis
> > > isis circuit-type level-1-2
> > >
> > > ISIS puts these two interfaces into its level-1 database. It also
> receives
> > a
> > > route from an ISIS neighbor, R2. (I can post up the ISIS database if
any
> > wants
> > > to see it).
> > >
> > > The only ISIS route that finds its way into OSPF is the route from R2.
> The
> > > directly connected ISIS routes (the serial subinterface and loopback)
do
> > not
> > > make into the OSPF external route table. In the archive, it seems to
> been
> > have
> > > determined that OSPF would not import routes if those same routes were
> > also
> > > directly connected. However I substitued ISIS with EIGRP and the
routes
> > were
> > > successfully introduced into OSPF. RIP worked the same way ( I did not
> > > redistribute connected into OSPF).
> > >
> > > I also tried fiddling around with the isis circuit types, making the
> > serial
> > > subinterface a level-2 only circuit, as well as the ISIS routing as
> > level-2
> > > only, with no results.
> > >
> > > Am I missing something embarrassingly obvious? Help !
> > >
> > > Thanks,
> > > Joe
> > >
> > >
This archive was generated by hypermail 2.1.4 : Fri Dec 12 2003 - 12:29:11 GMT-3