The MPLS WG Archive

[bhuvan laddha <bhuvan_laddha@yahoo.com>]

Hi,

I would appreciate clarification for the following
points in the
'draft-ietf-ccamp-gmpls-sonet-sdh-08.txt':

1. Last paragraph of section 2. 'SONET and SDH Traffic
Parameters' states as 

" The traffic parameters and label encoding defined in
[RFC3471]
   Section 3.2 MUST be used for fully transparent
STS-1/STM-0/STS-
   3*N/STM-N (N=1, 4, 16, 64, 256) signal requests. A
fully
   transparent signal is one for which all overhead is
left
   unmodified by intermediate nodes, i.e., when all
defined
   Transparency (T) bits would be set if the traffic
parameters
   defined in section 2.1 were used."

Whereas one of the paragraph of section 3. 'SONET and
SDH Labels' states as 

" The label format defined in this section, referred
to as SUKLM,
   MUST be used for any SONET/SDH signal requests that
are not
   transparent i.e. when all Transparency (T) bits
defined in section
   2.1 are set to zero. Any transparent
STS-1/STM-0/STS-3*N/STM-N
   (N=1, 4, 16, 64, 256) signal request MUST use a
label format as
   defined in [RFC3471]. "


I want to know - 
	whether Section 3.2 of RFC3471 is applicable for any
or fully transparent signal ?
  	If that so, section 3.2 of RFC3471 doesn't specific
any format for SONET/SDH label.
	So, Is it fine to use generalized label in this case?


Please correct me if I missed something...

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