From: Steven Weber (itweber@xxxxxxxxxxxxx)
Date: Mon Feb 04 2002 - 12:32:51 GMT-3
That completely makes sense and I completely agree with it. However, I
cannot get multipoint to multipoint or physical to physical working. I tried
mapping CLNS dlci's, I tried using dynamic maps, but nothing works. I can
only find joy with point-to-point to a point-to-point.
Where am I messing up.
Regards,
Steve
----- Original Message -----
From: "tom cheung" <tkc9789@hotmail.com>
To: <itweber@earthlink.net>
Cc: <ccielab@groupstudy.com>
Sent: Monday, February 04, 2002 10:17 AM
Subject: Re: IS-IS over MBNA.....
> Steve,
> Brian Dennis explained clearly this a while back. Following is extracted
> from his e-mail:
>
> "The issue with ISIS over frame-relay is with a point-to-point
subinterface
> to a multipoint subinterface or to a physical interface.
>
> I just retested all this in my lab and confirmed what works and what
doesn't
> work.
>
> Works:
> 1. point-to-point subinterface to a point-to-point subinterface
> 2. physical interface to a physical interface
> 3. mulitpoint subinterface to a multipoint subinterface
> 4. multipoint subinterface to a physical interface
>
> Doesn't work:
> 1. point-to-point subinterface to a physical interface
> 2. point-to-point subinterface to a multipoint subinterface
>
> Basically the issue is with point-to-point interfaces sending
point-to-point
> IIH's (ISIS hellos) and multipoint or physical interfaces sending LAN
IIH's.
> There isn't a way to change the hello types.
>
> Also remember that if you're going to run ISIS over frame relay on a
> multipoint subinterface or a physical interface you'll need to map clns to
> the dlci."
>
> HTH
>
> Tom
>
>
>
> >From: "Steven Weber" <itweber@earthlink.net>
> >Reply-To: "Steven Weber" <itweber@earthlink.net>
> >To: <Yves@Fauser.de>
> >CC: <ccielab@groupstudy.com>, <nobody@groupstudy.com>
> >Subject: Re: IS-IS over MBNA.....
> >Date: Mon, 4 Feb 2002 08:49:42 -0500
> >
> >This link provides a wonderful explanation. Thank You. However, there are
> >still a few points that I'm unclear on. How do you know that there is a
TTL
> >bit and how do you know that it is set to 1. Also, the reason Doyle says
> >that it doesn't work is because a multipoint interface is treated like a
> >LAN
> >interface and a point-to-point interface is treated like a point-to-point
> >link. IS-IS doesn't have a network command like OSPF does in order to
> >change
> >this. Therefore the link on both ends must be the same. So according to
> >this, a hub which is multipoint with spokes that are point-to-point will
> >not
> >work but if the interface types on both ends match there should be no
> >problems. But there are........
> >
> >Regards,
> >Steve
> >----- Original Message -----
> >From: <Yves@Fauser.de>
> >To: "Steven Weber" <itweber@earthlink.net>
> >Cc: <ccielab@groupstudy.com>; <nobody@groupstudy.com>
> >Sent: Monday, February 04, 2002 8:04 AM
> >Subject: Re: IS-IS over MBNA.....
> >
> >
> > > Hi Steve,
> > >
> > > we had a discussion about that some time ago, maybe this helps :
> > >
> > > http://www.groupstudy.com/archives/ccielab/200108/msg00763.html
> > >
> > > Yves
> > >
> > >
> > >
> > >
> > >
> > > "Steven Weber" <itweber@earthlink.net>
> > > Sent by: nobody@groupstudy.com
> > > 04.02.2002 04:14
> > > Please respond to "Steven Weber"
> > >
> > >
> > > To: <ccielab@groupstudy.com>
> > > cc:
> > > Subject: IS-IS over MBNA.....
> > >
> > >
> > > I was going through Doyle Vol. I and when I got to IS-IS over MBNA he
> >says
> > > that unlike OSPF you cannot change the network types on a frame relay
> > > interface. Therefore they all must use the same interface types.
However
> > > when
> > > I tried this I only had success with point-to-point like Doyle
suggests.
> > > When
> > > I try to use the physical interface on the hub and spokes or use
> > > multipoint on
> > > hub and spokes the adjacencies never form. Would someone please be
able
> > > to
> > > explain to me why it only works when you use point-to-point and not
> > > multipoint
> > > or physical interfaces.
> > > Regards,
> > > Steve
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