From: McCallum, Robert (Robert.McCallum@xxxxxxxxxxxxxxxxxx)
Date: Fri Jan 04 2002 - 12:21:14 GMT-3
I think you might find that when you do router isis blah that CLNS routing will
automatically be in the config. Trust me I work with it and configure it on a
daily basis.
-----Original Message-----
From: Stephen C. Feldberg [mailto:scfeldberg@hotmail.com]
Sent: 04 January 2002 15:18
To: McCallum, Robert; 'Peter van Oene'; CCIE Lab; ccielab@groupstudy.com
Subject: Re: CLNS routing
The only time I have had to reference CLNS is when attepmting to establish
neighbor adjacencies over Frame Relay on an interface that was using FR
maps. ie
frame-relay map clns 103 broadcast
This validates what Mike Popovich states about the requirement for CLNS PDU
communication between peers. This does not mean, however, that CLNS
*routing* is enabled or required for this operation - just that the peers
need to reach each other via CLNS to form neighbor relationships.
BTW "CLNS routing" will not appear in the running config when "router ISIS"
has been activated - for this to happen, the CLNS routing command has to be
entered separately from global configuration mode..
Steve
----- Original Message -----
From: "McCallum, Robert" <Robert.McCallum@let-it-be-thus.com>
To: "'Peter van Oene'" <pvo@usermail.com>; "CCIE Lab" <labccie@yahoo.com>;
<ccielab@groupstudy.com>
Sent: Friday, January 04, 2002 8:56 AM
Subject: RE: CLNS routing
> Peter,
>
> Clns routing is turned on by default when you do router isis. No?
>
> -----Original Message-----
> From: Peter van Oene [mailto:pvo@usermail.com]
> Sent: 04 January 2002 13:47
> To: CCIE Lab; ccielab@groupstudy.com
> Subject: Re: CLNS routing
>
>
> That is not correct actually. There is no requirement for CLNS routing to
> be enabled in order to route IP with ISIS. Further, ISIS in no way makes
> use of CLNS or CLNP.
>
> At 09:02 PM 1/3/2002 -0800, CCIE Lab wrote:
> >MP,
> >that pretty much made things clearer for me. thanks!
> >so are you telling us that whenever I want to enable
> >ISIS routing on a router, I've gotta enable clns
> >routing first by entering "clns routing"?
> >
> >
> >
> >--- Michael Popovich <m.popovich@home.com> wrote:
> > > I am not sure I understand your question but as I
> > > see how IS-IS is put
> > > together the need for CLNS is because of the ISO
> > > standard for addressing and
> > > PDU's that are used to make adjacencies. These PDU's
> > > use the CLNP protocol
> > > to talk to peers and are actually called CLNS PDU's.
> > > You must enable CLNS in
> > > order for IS-IS to form adjecencies and route, even
> > > if it is routing TCP/IP
> > > only.
> > >
> > > The idea of multi-area is to allow more that one
> > > area address on a router
> > > for ease of migration or changes in the interdomain
> > > routing design. You can
> > > add up to 3 area addresses on Cisco routers that
> > > will allow the routers to
> > > communicate with other routers in different areas at
> > > the same time. When the
> > > change is finally made to one area adjacencies are
> > > still formed and
> > > communication was not lost. You can see this
> > > reflected in the LSPID's in the
> > > "ISIS database".
> > >
> > > But I see multi-area as a part of IS-IS not really a
> > > difference other than
> > > network design so I am a little confused by what you
> > > are asking here.
> > >
> > > MP
> > >
> > > From: "CCIE Lab" <labccie@yahoo.com>
> > > To: <ccielab@groupstudy.com>
> > > Sent: Thursday, January 03, 2002 10:16 PM
> > > Subject: CLNS routing
> > >
> > >
> > > > I'm confused about the difference between the
> > > > Inegrated ISIS routing and the Multi-area ISIS
> > > > routing?
> > > > and their relations with enabling the CLNS routing
> > > on
> > > > the router?
> > > > Could anyone give some explanations?
> > > > TIA
> > > >
> > > >
> > > >
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