From: Stephen C. Feldberg (scfeldberg@xxxxxxxxxxx)
Date: Fri Jan 04 2002 - 13:09:01 GMT-3
Let me make an amendment to my earlier observations about IS-IS and CLNS.
Activating ISIS routing (router isis, net 00.0000.0000.0000, is-type
level-1-2) does not enable CLNS routing - *however* - when "ip router isis"
is applied to an interface, the IOS automatically enables clns routing.
Steve
----- Original Message -----
From: "McCallum, Robert" <Robert.McCallum@let-it-be-thus.com>
To: "'Stephen C. Feldberg'" <scfeldberg@hotmail.com>; "McCallum, Robert"
<Robert.McCallum@let-it-be-thus.com>; "'Peter van Oene'" <pvo@usermail.com>;
"CCIE Lab" <labccie@yahoo.com>; <ccielab@groupstudy.com>
Sent: Friday, January 04, 2002 10:21 AM
Subject: RE: CLNS routing
> 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
> > > > >
> > > > >
> > > > >
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:56:16 GMT-3