Subject: [Pce] Proposed updated Charter

From: "JP Vasseur (jvasseur)" <[email-masked]>
Date: Tue, 16 Apr 2013 10:51:48 +0000

Dear all,

As discussed in Orlando and according to the consensus in the WG to modify our charter, please find a proposed text.

Please comment by April 30th.

JP and Julien.

Description of Working Group
The PCE Working Group is chartered to specify the required protocols so  as to enable a Path Computation Element (PCE)-based architecture for the  computation of paths for MPLS and GMPLS Point to Point and Point to  Multi-point Traffic Engineered LSPs.   
In this architecture path computation does not necessarily occur on the  head-end (ingress) LSR, but on some other path computation entity that  may physically not be located on each head-end LSR.   
The PCE WG works on application of this model within a single domain  or within a group of domains (where a domain is a layer, IGP area or  Autonomous System with limited visibility from the head-end LSR). At  this time, applying this model to large groups of domains such as the  Internet is not thought to be possible, and the PCE WG will not spend  energy on that topic.   The WG specifies the PCE communication Protocol (PCEP) and needed  extensions for communication between LSRs (termed Path Computation  Clients - PCCs) and PCEs, and between cooperating PCEs. Security  mechanisms such as authentication and confidentiality are included.   The WG determines requirements for extensions to existing routing and  signaling protocols in support of the PCE architecture and the signaling  of inter-domain paths (e.g. RSVP-TE and its GMPLS variations). Any  necessary extensions will be produced in collaboration with the Working  Groups responsible for the protocols.   The WG also works on the mechanisms to for multi-layer path computation  and PCEP extensions for communication between several network layers.   The WG defines the required PCEP extensions for Wavelength Switched  Optical Networks (WSON) while keeping consistency with the GMPLS  architecture specified in the CCAMP WG.   
Work Items:   
- PCEP extensions for MPLS and GMPLS Traffic Engineered LSP path  computation models involving PCE(s). This includes the case of  computing the paths of intra and inter-domain TE LSPs. Such path  computation includes the generation of primary, protection and  recovery paths, as well as computations for (local/global)  reoptimization and load balancing. Both intra- and inter-domain  applications are covered.  
- In cooperation with protocol specific Working Group (e.g., MPLS,  CCAMP), development of LSP signaling (RSVP-TE) extensions required  to support PCE-based path computation models.  
- Specification of PCEP extensions for communication in the various  GMPLS-controlled networks, including WSON.  
- Definition of PCEP extensions for path computation in multi-layer networks.
- Definition of the PCEP extensions used by a stateful PCE for recommending a new path for an existing or new LSP to the PCC/PCE. Further protocol extensions must cover the case where the recommendation is not followed by the PCC/PCE.
Goals and Milestones
April 2013  Submit the GMPLS requirements to the IESG to be considered as an Informational RFC
Sept 2013  Submit PCEP extensions for GMPLS to the IESG to be considered as a Proposed Standard
Sept 2013  Submit inter-area/AS applicability statement to the IESG as an Informational RFC
Nov 2013   Adopt PCEP extensions for hierarchical PCE path computation model as WG document
Jan 2014  Submit the PCEP MIB to the IESG to be considered as a Proposed Standard
Feb 2014 Submit inter-layer PCEP extensions to the IESG to be considered as a Proposed Standard
April 2014  Adopt PCEP P2MP MIB as a WG document
April 2014 Submit the PCE Discovery MIB to the IESG to be considered as a Proposed Standard
April 2014  Submit PCEP P2MP MIB to the IESG to be considered as a Proposed Standard
TBD: ADD NEW MILESTONES ACCORDING TO THE NEW CHARTER.
Feb 2015   Evaluate WG progress, recharter or close