WG ACTION: Multicast & Anycast Group Membership (magma)

[The IESG <[e-mail]>]

A new working group has been formed in the Internet Area of the IETF.
For additional information, contact the Area Directors
or the WG Chair.


Multicast & Anycast Group Membership (magma)
--------------------------------------------
 
 Charter 


 Current Status: Active Working Group
 
 Chair(s):
     Bill Fenner <[e-mail]>
     Brian Haberman <[e-mail]>
 
 Internet Area Director(s): 
      IAB  <[e-mail]>
     Erik Nordmark  <[e-mail]>
 
 Internet Area Advisor: 
     Erik Nordmark  <[e-mail]>
 
 Mailing Lists: 
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     Archive:           http://www.innovationslab.net/pipermail/magma/
 
Description of Working Group:
 
Group management protocols are crucial to the operation of multicast
within the Internet, and there are some benefits in extending group
management protocols to also be able to support anycast. These
protocols allow hosts to inform routers of their membership status 
within groups.  This working group will be responsible for developing 
the functionalities required for group membership reporting and other 
related actions.  This group will also address the initial 
authentication and access control issues associated with anycast group 
membership; this is likely to be limited to shared secrets and message 
authentication codes (MACs) much like current routing protocol
security.  Other aspects of Anycast, including architecture and
routing, are outside the groups scope.

The draft names listed below are the starting point for the work in the 
WG.

MAGMA specifications will include:

- Core IGMPv3/MLDv2 specifications.  These specifications will describe
  the protocol used between hosts and routers to share group membership
  information.  IGMPv3 and MLDv2 build on IGMPv2 and MLDv1 by adding
  two types of source-specific filtering; "include" (in which the
  system tells the router exactly which sources it desires) and 
  "exclude" (in which the system tells the router that it does *not* 
  desire a list of sources).

  - IGMPv3: The IDMR working group has submitted this for Proposed 
     Standard.
     MAGMA takes ownership after publication as RFC.

  - MLDv2: draft-vida-mld-v2-00.txt

- Multicast Source Filtering API.  This specification describes the API
  used to interact with IGMPv3 and MLDv2 to indicate source filters.
  
  - draft-ietf-idmr-msf-api-01.txt

- Host determination of network group membership.  In a multicast
  environment, systems may be interested in learning whether or not
  there are any group members, in order to save the trouble of sending
  data that nobody is listening to.

   - Multicast Source Notification of Interest Protocol:
     draft-ietf-idmr-msnip-00

- Multicast forwarding in tree topologies using IGMP/MLD Proxying
  - Create a single document from:
    - draft-ietf-idmr-igmp-proxy-00

    - draft-he-mixed-igmp-proxy-00

- Source-Specific Multicast (SSM) consideration document.  This work
  will describe the use of IGMPv3/MLDv2 in an SSM environment.
  - draft-holbrook-idmr-igmpv3-ssm-01.txt

- Considerations for "IGMP snooping" switches (switches that watch IGMP
  exchanges in order to determine multicast forwarding behavior)

- Multicast Router Discovery: The IDMR working group has submitted this
  for Proposed Standard. MAGMA takes ownership after publication as RFC.
  - Snooping Considerations: draft-ietf-idmr-snoop-00.txt

- Group management MIBs
  - update RFC 2933 for IGMPv3
  - update RFC 3019 for MLDv2

- Interaction between IGMP/MLD and routing protocols
  - draft-ietf-idmr-igmpv3-and-routing-00.txt

- Extensions to MLD supporting anycast group memberships including
  authentication and access control mechanisms
  - draft-haberman-ipngwg-host-anycast-00.txt

In addition, this working group will coordinate with other IETF working
groups where multicast and anycast group management protocols are 
utilized as well as coordinating with the Multicast Security WG.
 
 Goals and Milestones: 
 
   Aug 01       Submit SSM considerations for IGMPv3 specification as Proposed 
                Standard.                                                      

   Dec 01       Submit IGMPv3 Interactions with routing protocols document as 
                Informational.       

   Dec 01       Submit MLDv2 specification as Proposed Standard.               

   Dec 01       Submit Extensions to MLD for Anycast as Proposed Standard.     

   Dec 01       Submit IGMP Snooping Considerations document as Informational. 

   Dec 01       Submit Multicast Source Filtering API as Informational         

   Dec 01       Submit Mixed-version IGMP Proxying as Proposed Standard.       

   Dec 01       Submit SSM considerations for MLD specification as Proposed 
                Standard                                                       

   Mar 02       Submit IGMPv3 MIB as Proposed Standard.                        

   Mar 02       Submit MSNIP for IPv4 specification as Proposed Standard.      

   Mar 02       Submit MLD Snooping Considerations document as Informational.  

   Mar 02       Submit MLDv2 MIB as Proposed Standard.                         

   Mar 02       Submit MSNIP for IPv6 specification as Proposed Standard.      

   Mar 02       Submit MLDv2 Interactions with routing protocols document as 
                Informational.                                                 

   Mar 02       Submit MLD Proxying specification as Proposed Standard.