RE: LMP Procedure in UNI 1.0 - Doubts

[Dimitrios Pendarakis <DPendarakis@tellium.com>]

Hi all,

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.

Thanks,
Dimitris

> -----Original Message-----
> From: Bradford, Richard [mailto:rbradfor@cisco.com]
> Sent: Monday, October 15, 2001 12:19 PM
> To: nooreghazi@dacafe.com
> 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
> >change.
> 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.
> 
> Sincerely,
>          Rich
> 
> 
> 
> 
> --
> Rich Bradford          Email: rbradfor@cisco.com
> Cisco Systems, Inc.    Tel: 978-244-3079
> 300 Apollo Drive       Fax: 978-244-3079
> Chelmsford, Mass 01824
> 
> 
> 
> 
>