Subject: minutes of Sigtran WG

From: "Ong, Lyndon" <[email-masked]>
Date: Tue, 21 Aug 2001 15:21:48 -0700

Sigtran Working Group Meeting Notes
August 7, 2001
Presentation urls listed at the end
 
Reported by: Ken Morneault
 
The Sigtran WG met on August 7, 2001 with 99 people attending.
 
Agenda bashing - Lyndon Ong
 
*  Noted that v5 and M3UA MIB representatives not available at this meeting,
so these topics were not discussed.  
 
Status of Working Group Milestones - Lyndon Ong
 
Slow progress since the last meeting in terms of progression of drafts.
Plan to move Working Group into dormant status ASAP when charter items are
completed.
 
SCTP Status - Lyndon Ong
 
SCTP extensions and discussions moved to TSV WG.  
 
There is still an outstanding issue in regards to error check.  Proposed
CRC-32 alternative is controversial because it is not backwards compatible.
Will need to move to have another bakeoff after decision made.
 
A question was raised on the status of the U-SCTP proposal.  Scott (as TSV
chair) said it is still open for discussion in the TSV WG.
 
M2UA status - Lyndon Ong
 
Completed WG Last Call.  Next version being prepared for IESG Last Call.
 
M3UA status - Lyndon Ong
 
Completed WG Last Call.  However, there are still a number of outstanding
issue and comments.  Next version will hopefully
go to IESG.
 
Applicability Statements - Lyndon Ong
  
SCTP AS completed Last Call.  Working to resolve comments from Area
Directors.  ADs would like focus of document to be refocused on comparison
of SCTP characteristics against TCP/UDP and to make recommendations as to
when SCTP should
be used vs. TCP/UDP.  Previous focus of the document was problems that
implementers could run into when trying to use SCTP.
 
SUA Status - John Loughney
 
WG Last Call started on Monday.  Comments have been received. They will be
numbered and sent to the list.  The ASP Management procedures are being
re-synced among M3UA/M2UA/SUA.
 
Summary of current comments:
 
(see John's slides)
 
Next steps (SUA)
 
Resolve issues, update draft and reissue as SUA v08.  Plan to have IESG Last
Call before next IETF meeting.
 
Question:  TUA draft dropped because of lack of interest.  Concern that SUA
needs to cover all needs of TCAP.
 
Answer:  The goal of SUA was to cover all SCCP-users including TCAP. If
anyone sees any holes, please note them to the list during the last call.
 
M2PA Status - Kurt Damm
 
Quick review of M2PA status.  Note new version of draft:  M2PA v3.
The new draft includes:
 
*  proving (normal and emergency) procedures for alignment
*  common header format accepted
*  SCTP associations can be started before MTP3 Start primitive
*  version control
 
Open issues:
 
*  Does M2PA need its own sequence numbers?  Current proposal is no.
 
M2PA Interoperability Test
 
Alcatel plans to host in Plano, Texas.  Proposed dates are October
29-November 2.  Details will be posted to a web site by the end of August.
 
Would like to go to Last Call.  We will consider if it is ready for Last
Call after M3UA and SUA complete Last Call.
 
Question:  Why was proving added back into the draft?
 
Answer:  Felt it was need to ensure the quality and performance of the
association before passing MTP traffic.  Still open for comment on the list.
 
DUA Status - Anil Kumar
 
DPNSS/DASS2 extensions to IUA.  Brief overview of what DPNSS and DASS2 along
with architecture of DPNSS/DASS2 backhaul. Brief overview of extensions
required to IUA to support 
DPNSS/DASS2.
 
Two comments from the floor that draft should be 
moved forward into Last Call.  Lyndon wants to wait until other UAs move
through Last Call process, then DUA can be submitted.
 
SCTP MIB status - Maria
 
Changes:
 
- added sctpMaxAssoc based on TCP folks' comment
- context change for checksum error
- added port type based on TCP MIB work
 
Open Issues:
 
- use of counter32 vs. counter64
-- it was suggested that the editor get help from Bert Wijnen, one of the
A-Ds for that area, concerning this issue.
 
Version 5 will incorporate TCP MIB alignment.  We need to clarify if we
should Last Call SCTP MIB before the TCP MIB is finalized.
 
Bakeoffs - Lyndon Ong
 
Lyndon noted that bakeoffs are not an official activity of the Working
Group, but the WG is a good place to coordinate them.  
 
Scorecard:
 
SCTP - 3 bakeoffs
M3UA - 1 bakeoff
IUA  - tentative plan to joint Megaco bakeoff (the week of Sept. 9th
       at UNH)
M2UA - ?
SUA  - Offer, Belgium in Oct/Nov
M2PA - Offer, Plano, Texas in Oct/Nov
 
Noted from floor that Softswitch plans to offer full end-to-end testing
during the 1st week of November in CA.  

Presentations:
ftp://standards.nortelnetworks.com/sigtran/presentations/london01-agenda.doc
ftp://standards.nortelnetworks.com/sigtran/presentations/london01-sua.ppt
ftp://standards.nortelnetworks.com/sigtran/presentations/london01-m2pa.ppt
ftp://standards.nortelnetworks.com/sigtran/presentations/london01-dua.ppt
ftp://standards.nortelnetworks.com/sigtran/presentations/london01-mib.ppt

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