Access Node Control Protocol (ANCP) - PowerPoint PPT Presentation

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Access Node Control Protocol (ANCP)

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Access Node Control Protocol (ANCP) IETF 66, Montreal Wojciech Dec (wdec_at_cisco.com) Matthew Bocci (matthew.bocci_at_alcatel.co.uk) Administrivia Blue Sheets Note takers ... – PowerPoint PPT presentation

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Title: Access Node Control Protocol (ANCP)


1
Access Node Control Protocol (ANCP)
  • IETF 66, Montreal
  • Wojciech Dec (wdec_at_cisco.com)
  • Matthew Bocci (matthew.bocci_at_alcatel.co.uk)

2
Administrivia
  • Blue Sheets
  • Note takers Jabber Scribe
  • Mailing List
  • General Discussion ancp_at_ietf.org
  • To Subscribe ancp-request_at_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_at_ietf.org
  • l2cp_at_ietf.org has been closed
  • Please use ancp_at_ietf.org for discussion relevant
    to the WG
  • To subscribe
  • Send mail with subject subscribe to
    ancp-request_at_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?
  • Q3Do 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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