1. Layer 2 Control Protocol BoF (L2CP) IETF 65, Dallas, TX Wojciech Dec (wdec@cisco.com)wdec@cisco.com Matthew Bocci (matthew.bocci@alcatel.co.uk)

2. Administrivia Blue Sheets Note takers + Jabber Scribe Mailing List: General Discussion: l2cp@ietf.org To Subscribe: l2cp-request@ietf.org In Body: subscribe your_email_address Archive: http://www.ietf.org/mail-archive/web/l2cp/index.html

3. Agenda Introduction/agenda tweaking (Chairs) Problem description (Thomas Haag) Overview of proposed protocol solution (Sanjay Wadwha) Proposed Work Items & Charter (Chairs) Discussion and focus –Is there interest on working on this? –Is the proposed charter a reasonable start?

4. Introduction and Scope L2CP is about: –Common, IP-based protocol that operates across a number of access and aggregation network technologies –Operates between access node (e.g. DSLAM) and aggregation device (BRAS/BNG) –Enable specific tasks that are not automated today: access line topology discovery, triggering remote local loop OAM tests, dynamic local loop line configuration, communicate multicast state between access node and BNG L2CP will NOT: –Address or replace control plane of the underlying aggregation network e.g. ATM VCs, Ethernet VLANs etc

5. Related Documents Proposed Charter: http://www3.ietf.org/proceedings/06mar/slides/l2cp-0.txt http://www3.ietf.org/proceedings/06mar/slides/l2cp-0.txt GSMP extensions for layer2 control http://www.ietf.org/internet-drafts/draft-wadhwa-gsmp-l2control-configuration-00.txt http://www.ietf.org/internet-drafts/draft-wadhwa-gsmp-l2control-configuration-00.txt Framework and Requirements for a Layer 2 Control Protocol (L2CP) in Broadband Multi-Service Networks http://www.ietf.org/internet-drafts/draft-ooghe-l2cp-framework-00.txt http://www.ietf.org/internet-drafts/draft-ooghe-l2cp-framework-00.txt GSMP Background: General Switch Management Protocol v3 - RFC3292 http://www.ietf.org/rfc/rfc3292.txt?number=3292 http://www.ietf.org/rfc/rfc3292.txt?number=3292 Draft GSMPv3 Base Specification http://www.ietf.org/internet-drafts/draft-ietf-gsmp-v3-base-spec-07.txt http://www.ietf.org/internet-drafts/draft-ietf-gsmp-v3-base-spec-07.txt DSL Forum Liaison: Layer 2 Control Protocol use-cases (DSL Forum work in progress) PD21 - Liaised to the IETF by the DSL Forum on December 8th, 2005. dsl2005.052.doc.

6. Problem Statement Thomas

7. Proposed Protocol Sanjay

8. Issues Applicability of GSMP and evolution (media specific encapsulations, IPSec, Partitioning, etc) Scalability of transport protocol and messaging for large scale deployments High Availability/Graceful Restart/Stateful switchover (redundant controllers)/non disruptive state refresh Database scalability and handling stale entries Protocol Security/peer authentication Applicability to other broadband access technologies

9. Proposed Work Items Framework / Requirements –Describe use cases –Identify specific protocol requirements Protocol Spec –Define extensions to existing protocol Proposal to extend a subset of GSMPv3 –Extensions to address issues MIBS

10. Interactions with other IETF WGs and standards bodies DSL Forum –Use cases and requirements –WT-147 "Layer 2 Control Mechanism for Broadband Multi-Service Architectures"

11. Discussion Is there interest in this work? Comments on the charter –Is the proposed charter a reasonable start? –What should the WG name be?