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RE: LMP Procedure in UNI 1.0 - Doubts
The mapping between IPCC and CCID should indeed be one-to-one.
IPCC is a term for the data channel that is used to exchange
IP control messages between a UNI-C and UNI-N. CCID is the
identifier for the IPCC. So, its basically a matter of definition.
Of course, as pointed out in the document, the CCID may be
different in each direction.
> -----Original Message-----
> From: Bradford, Richard [mailto:email@example.com]
> Sent: Monday, October 15, 2001 12:19 PM
> To: firstname.lastname@example.org
> Cc: CCAMP
> Subject: Re: LMP Procedure in UNI 1.0 - Doubts
> At 01:54 AM 10/15/2001 -0800, Dipnarayan Guha wrote:
> >Hello Ramesh,
> > Rather you may say that a
> >corresponding IPCC may have one or more CCID's.
> I do not believe this last statement is correct. It seems
> that an IPCC
> should (must?) have one and only one node-wide unique CCID. Having a
> many-to-one mapping leads to problems. For example, there is
> a one-to-one
> correspondence between MessageID fields and CCIDs (See
> section 2, paragraph 5).
> >For in-fibre signalling, Interface ID has to be assigned by
> the initiating
> >node. This can be done
> >and then the CCID will again change (provided in-fibre signalling is
> >present again), but the original CC that is already
> established will NOT
> I believe there is a flaw in this interpretation. If the CCID
> is reassigned
> then the old CCID would no longer be valid. In the case
> described, the old
> Interface ID for the data link has been changed so an in-band
> CCID using
> the old value would be invalid, since it would no longer
> match the TE-link ID.
> Rich Bradford Email: email@example.com
> Cisco Systems, Inc. Tel: 978-244-3079
> 300 Apollo Drive Fax: 978-244-3079
> Chelmsford, Mass 01824