Transport Area Working Group (tsvwg)
------------------------------------

 Charter
 Last Modified: 2006-08-02

 Current Status: Active Working Group

 Chair(s):
     James Polk  <jmpolk@cisco.com>
     Magnus Westerlund  <magnus.westerlund@ericsson.com>
     Lars Eggert  <lars.eggert@netlab.nec.de>

 Transport Area Director(s):
     Magnus Westerlund  <magnus.westerlund@ericsson.com>
     Lars Eggert  <lars.eggert@netlab.nec.de>

 Transport Area Advisor:
     Lars Eggert  <lars.eggert@netlab.nec.de>

 Mailing Lists: 
     General Discussion:tsvwg@ietf.org
     To Subscribe:      tsvwg-request@ietf.org
         In Body:       subscribe email_address
     Archive:           http://www.ietf.org/mail-archive/web/tsvwg/index.html

Description of Working Group:

The Transport Area receives occasional proposals for the development 
and publication of RFCs dealing with transport topics that are not in 
scope of an existing working group or do not justify the formation of 
a new working group. TSVWG will serve as the forum for developing 
such work items in the IETF.

The TSVWG mailing list is an open discussion forum for such work 
items, when they arise. The working group meets if there are active 
proposals that require discussion. The working group milestones are 
updated as needed to reflect the current work items and their 
associated milestones.

The currently active TSVWG work items mostly fall under the following 
topics:

(A) Maintenance of the Stream Control Transmission Protocol (SCTP), 
which involves bug fixes to the SCTP specifications and their 
progression along the standards track. This work item also includes a 
small number of modular extensions to SCTP. Currently, these include 
SCTP-ADDIP, SCTP-AUTH and SCTP-PADDING, as well as socket API and 
threat analysis documents. In order to maintain stable 
specifications, additional work on SCTP in TSVWG requires Area 
Director approval.

(B) Maintenance of the Resource Reservation Protocol (RSVP), which 
involves bug fixes to the RSVP specifications and their progression 
along the standards track. This work item may also include a small 
number of extensions to RSVP or advisory documents to address 
specific application scenarios. In order to maintain stable 
specifications, additional work on RSVP in TSVWG requires Area 
Director approval.

(C) Maintenance of IP Differentiated Services (DiffServ) mechanisms, 
which involves mostly advisory documents on the use of DiffServ in 
specific application scenarios. Other work items related to DiffServ 
require Area Director approval.

(D) Selected other work items, which are mostly in TSVWG for historic 
reasons. These include an extended statistics MIB for TCP and the 
quick-start mechanism for TCP and IP. Additional work that does not 
fall under one of the above topics in TSVWG must satisfy four 
conditions: (1) WG consensus on the suitability and projected quality 
of the proposed work item. (2) A core group of WG participants with 
sufficient energy and expertise to advance the work item according to 
the proposed schedule. (3) Commitment from the WG as a whole to 
provide sufficient and timely review of the proposed work item. (4) 
Agreement by the ADs, who, depending on the scope of the proposed 
work item, may decide that an IESG review is needed first.

 Goals and Milestones:

   Done         Updates to RFC 793 to resolve conflict between diffserv and TCP 
                interpretation of IP Precedence submitted for publication as 
                Proposed Standard 

   Done         Addition to RFC 2018 to use TCP SACK for detecting unnecessary 
                retransmissions submitted for publication as Proposed Standard 

   Done         Submit I-D on TCP Congestion Window Validation to IESG for 
                consideration as a Proposed Standard 

   Done         Submit I-D on Computing TCP's Retransmission Timer to IESG for 
                consideration as a Proposed Standard. 

   Done         submit revised ID for ECN to IESG for consideration as a 
                proposed standard 

   Done         submit ID on UDP-lite to IESG for consideration as a proposed 
                standard 

   Done         TCP-Friendly Rate Control (TFRC) unicast congestion control 
                algorithm submitted to IESG for consideration as a proposed 
                standard 

   Done         Submit ID for SCTP unreliable transport mode to IESG for 
                consideration as a Proposed Standard 

   Done         Submit 'Alternate Semantics for the ECN Field' to IESG for 
                consideration as BCP 

   Done         Submit 'Aggregation of RSVP Reservations over MPLS TE/DS-TE 
                Tunnels' to IESG for consideration as PS 

   Done         Submit Submit 'QoS Signaling in a Nested Virtual Private 
                Network' to IESG for consideration as Informational 

   Done         Submit 'Generic Aggregate RSVP Reservations' to IESG for 
                consideration as PS 

   Jul 2006       Submit 'TCP Extended Statistics MIB' to IESG for consideration 
                as PS 

   Done         Submit 'Quick-Start for TCP and IP' to IESG for consideration 
                as Experimental 

   Aug 2006       Submit 'SCTP Dynamic Address Reconfiguration' to IESG for 
                consideration as PS 

   Aug 2006       Submit 'Authenticated Chunks for Stream Control Transmission 
                Protocol' to IESG as consideration as PS 

   Oct 2006       Submit 'Security Threats to SCTP' to IESG for consideration as 
                Informational 

   Nov 2006       Submit 'Sockets API Extensions for Stream Control Transmission 
                Protocol' to IESG for consideration as Informational 

   Dec 2006       Submit 'Padding Chunk and Parameter for SCTP' to IESG for 
                consideration as PS 

   Jan 2007       Submit revision of 'Stream Control Transmission Protocol' to 
                IESG for consideration as PS 

   Mar 2007       Submit 'Aggregation of DiffServ Service Classes' for 
                consideration as Informational 


 Internet-Drafts:

Posted Revised         I-D Title   <Filename>
------ ------- --------------------------------------------
May 2001 Jun 2006   <draft-ietf-tsvwg-addip-sctp-15.txt>
                Stream Control Transmission Protocol (SCTP) Dynamic Address 
                Reconfiguration 

Jun 2001 Jun 2006   <draft-ietf-tsvwg-sctpsocket-13.txt>
                Sockets API Extensions for Stream Control Transmission Protocol 
                (SCTP) 

Feb 2002 Aug 2006   <draft-ietf-tsvwg-tcp-mib-extension-11.txt>
                TCP Extended Statistics MIB 

Jun 2005 Aug 2006   <draft-ietf-tsvwg-quickstart-06.txt>
                Quick-Start for TCP and IP 

Jun 2005 Sep 2006   <draft-ietf-tsvwg-sctp-auth-04.txt>
                Authenticated Chunks for Stream Control Transmission Protocol 
                (SCTP) 

Jul 2005 Sep 2006   <draft-ietf-tsvwg-rsvp-dste-05.txt>
                Aggregation of RSVP Reservations over MPLS TE/DS-TE Tunnels 

Jan 2006 Sep 2006   <draft-ietf-tsvwg-ecn-alternates-02.txt>
                Specifying Alternate Semantics for the Explicit Congestion 
                Notification (ECN) Field 

Jan 2006 Aug 2006   <draft-ietf-tsvwg-sctpthreat-01.txt>
                Security Attacks Found Against SCTP and Current Countermeasures 

Feb 2006 Jun 2006   <draft-ietf-tsvwg-2960bis-02.txt>
                Stream Control Transmission Protocol 

Feb 2006 Feb 2006   <draft-ietf-tsvwg-vpn-signaled-preemption-00.txt>
                QoS Signaling in a Nested Virtual Private Network 

Mar 2006 Jul 2006   <draft-ietf-tsvwg-rsvp-ipsec-02.txt>
                Generic Aggregate RSVP Reservations 

Jun 2006 Jun 2006   <draft-ietf-tsvwg-sctp-padding-00.txt>
                Padding Chunk and Parameter for SCTP 

Jun 2006 Jun 2006   <draft-ietf-tsvwg-diffserv-class-aggr-00.txt>
                Aggregation of DiffServ Service Classes 

 Request For Comments:

  RFC   Stat Published     Title
------- -- ----------- ------------------------------------
RFC2861 E    Jun 2000    TCP Congestion Window Validation 

RFC2883 PS   Aug 2000    An Extension to the Selective Acknowledgement (SACK) 
                       Option for TCP 

RFC2988 PS   Nov 2000    Computing TCP's Retransmission Timer 

RFC3042 PS   Jan 2001    Enhancing TCP's Loss Recovery Using Limited Transmit 

RFC3168 PS   Sep 2001    The Addition of Explicit Congestion Notification (ECN) 
                       to IP 

RFC3309 PS   Oct 2002    Stream Control Transmission Protocol (SCTP) Checksum 
                       Change 

RFC3390 PS   Nov 2002    Increasing TCP's Initial Window 

RFC3436 PS   Dec 2002    Transport Layer Security over Stream Control 
                       Transmission Protocol 

RFC3448 PS   Jan 2003    TCP Friendly Rate Control (TFRC):Protocol Specification 

RFC3517 PS   Apr 2003    A Conservative Selective Acknowledgment (SACK)-based 
                       Loss Recovery Algorithm for TCP 

RFC3522 E    May 2003    The Eifel Detection Algorithm for TCP 

RFC3540 E    Nov 2003    Robust ECN Signaling with Nonces 

RFC3649 E    Dec 2003    HighSpeed TCP for Large Congestion Windows 

RFC3708 E    Mar 2004    Using TCP DSACKs and SCTP Duplicate TSNs to Detect 
                       Spurious Retransmissions 

RFC3782Standard  Apr 2004    The NewReno Modification to TCP's Fast Recovery 
                       Algorithm 

RFC3742 E    May 2004    Limited Slow-Start for TCP with Large Congestion Windows 

RFC3758Standard  May 2004    SCTP Partial Reliability Extension 

RFC3828Standard  Jul 2004    The UDP-Lite Protocol 

RFC4015Standard  Feb 2005    The Eifel Response Algorithm for TCP 

RFC4460 I    Apr 2006    Stream Control Transmission Protocol (SCTP) 
                       Specification Errata and Issues 

RFC4495 PS   May 2006    A Resource Reservation Protocol (RSVP) Extension for the 
                       Reduction of Bandwidth of a Reservation Flow 

RFC4542 I    May 2006    Implementing an Emergency Telecommunications Service 
                       (ETS) for Real Time Services in the Internet Protocol 
                       Suite 

RFC4594 I    Aug 2006    Configuration Guidelines for DiffServ Service Classes