From: Brian (signal@xxxxxxxxxx)
Date: Sat Sep 08 2001 - 10:00:22 GMT-3
CLIP uses NSAP's yes, but that has nothing to do with CLNS........CLIP
doesn't use CLNS. I would know CLIP if I were you, in the whole scope of
CCIE topics, CLIP is an easy on to cover.
As far as ISIS, I have no idea if its in the lab or not, but I would know
it. Its a very strong IGP, and its deployed in some very large networks
out there (uunet?). Its very possible it could pick up momentum and gain
an even wider audience........on the lab or not, ISIS is something you
want to be clued in on IMHO.
Brian
On Fri, 7 Sep 2001, Brian Lodwick wrote:
> Does anyone know everything that was removed from the lab with the removal
> of ISO CLNS. Most importantly I would like to know if ATM Classical IP and
> ISIS for IP have been removed since they both use NSAP addresses. The
> reason I ask is because of the following information I've learned about
> CLNS:
>
> Cisco Documentation of OSI Protocols states "CLNS provides network layer
> services to the transport layer via CLNP" and "CLNP is an OSI network-layer
> protocol that carries upper-layer data and error indications over
> connectionless links. CLNP provides the interface between the Connectionless
> Network Service (CLNS) and upper layers." Caslow's book states that "The
> CLNP address format is also known as an NSAP address". Does this then mean
> that anything that uses NSAP addresses (like ATM Classical IP and ISIS for
> IP) has been removed from the lab? According to Jeff Doyle's Volume 1 book
> "Even when IS-IS is used to route only TCP/IP, IS-IS is still an ISO CLNP
> protocol. The packets by which IS-IS communicates with its peers are CLNS
> PDUs, which means that even in an IP-only environment, an IS-IS router must
> have an ISO address. The ISO address is a network address, a NET, described
> in ISO 8348." Thanks in advance.
>
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