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Access Node Control Protocol (ANCP)

Access Node Control Protocol (ANCP). IETF 66, Montreal Wojciech Dec ( wdec@cisco.com ) Matthew Bocci (matthew.bocci@alcatel.co.uk). Administrivia. Blue Sheets Note takers + Jabber Scribe Mailing List: General Discussion: ancp@ietf.org To Subscribe: ancp-request@ietf.org

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Access Node Control Protocol (ANCP)

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  1. Access Node Control Protocol (ANCP) IETF 66, Montreal Wojciech Dec (wdec@cisco.com) Matthew Bocci (matthew.bocci@alcatel.co.uk)

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

  3. Agenda • Introduction/agenda tweaking (Chairs) • Working Group Charter (Chairs - 10 mins) • ANCP Requirements (Stefaan de Cnodder - 15mins) • GSMP extensions for layer2 control (L2C) Topology Discovery and Line Configuration (Sanjay Wadhwa - 15 mins) • ANCP Graceful Restart Mechanism (Sanjay Wadhwa - 10 mins) • ANCP MIBs (Stefaan de Cnodder - 10 mins) • Outstanding Work Items (Chairs - 30mins)

  4. Charter Changes since the BoFhttp://www.ietf.org/html.charters/ancp-charter.html • Clarified terminology and WG name • Clarified non-goals • Set-up of VCs or generic Access Node Management. • Firmed up security objectives • Reliability & Scalability • Graceful restart • Distribution of functionality

  5. Revised Milestones • May 2006 ANCP MIB Last Call • Nov 2006 Accept WG I-D for ANCP Framework and Requirements • Jan 2007 Accept WG I-D for Access Node Control Protocol (ANCP) • Jan 2007 Framework and Requirements last call • Mar 2007 Accept WG I-D for ANCP MIB • Apr 2007 Access Node Control Protocol (ANCP) Last Call • Jul 2007 Re-charter or conclude Working Group

  6. Mailing list changes • All subscribers to L2CP mailing list should have been moved to ancp@ietf.org • l2cp@ietf.org has been closed • Please use ancp@ietf.org for discussion relevant to the WG • To subscribe: • Send mail with subject “subscribe” to ancp-request@ietf.org

  7. ANCP Requirements / Framework • Stefaan

  8. GSMP Extensions • Sanjay

  9. ANCP Graceful Restart • Sanjay

  10. ANCP MIBs • Stefaan

  11. Outstanding Work Items • Functional Partitioning and multiple controllers • Light-weight transport protocol • ANCP Protocol Security • Multicast control

  12. Functional Partitioning and multiple controllers • What are the partitioning capabilities required? • Q1: Controller redundancy? How many redundant controllers? • Q2: Controller functional split? • Q3: Do we envisage both to be required? Eg Redundant controller for QoS and single controller for OAM • Q4: Is it envisaged that multiple controllers, possibly managed by different operators, would be controlling the same function? • Q5: How is the “ownership” of a controlled port to be negotiated? • Q6: What are the security implications of functional partitioning across organisations?

  13. Light-weight transport protocol • High level goal is to scale the number of ANCP controlled nodes without compromising the transactional capabilities • Q1: What are the real transport requirements? Do all ANCP messages and interactions require the same mode of transport and message delivery, eg unicast reliable message delivery? • Q2: Does the light weight protocol become the long term goal over TCP? • Q3:Do we look for an existing light-weight transport IETF protocol? • Q4: Can SCTP be a valid alternative?

  14. ANCP Protocol Security • Minimally addressed in the current draft via pre-configured peer IP address based security at the moment. • Transport protocol security is an option, but this might not be applicable for when an alternative transport is defined or might not cover ANCP risks : • ANCP Protocol security appears to require WG work • Security requires from a threat model of ANCP and ANCP transport to drive the security requirements. • Operational considerations also drive some security requirements: ANCP aims to simply operations across organisational boundaries. Use of pre-shared keys could impact such simplification.

  15. Multicast control • Multicast control appears to encompass two main functions: • Controlling directly the per port multicast group replication or multicast data plane filtering on an AN • Reporting to the NAS per port membership and stats • Use-cases remain to be firmed up • Need to clarify relationship with exiting multicast techniques and protocols • Input from multicast WGs would be beneficial • No intention to reinvent the wheel.

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