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Mbus Update. draft-ietf-mmusic-mbus-transport-03.txt. Jörg Ott [email protected] Colin Perkins [email protected] Dirk Kutscher [email protected] Quick Reminder. Local coordination mechanism Specification split into three pieces Requirements overview

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mbus update

Mbus Update

draft-ietf-mmusic-mbus-transport-03.txt

Jörg Ott [email protected]

Colin Perkins [email protected]

Dirk Kutscher [email protected]

49. IETF, San Diego

Ott/Perkins/Kutscher

quick reminder
Quick Reminder
  • Local coordination mechanism
  • Specification split into three pieces
    • Requirements overview
    • Definition of the “transport protocol”
      • Message syntax, addressing, local multicast, reliability, authentication, ...
    • Definition of the message semantics
      • Call-control, media tools related commands

49. IETF, San Diego

Ott/Perkins/Kutscher

overview of changes in draft ietf mmusic mbus transport 03
Overview of Changes indraft-ietf-mmusic-mbus-transport-03
  • Allow for use of broadcast
    • Only when multicast is not available
  • Scope-relative multicast address
    • Yet to be assigned
    • MUST NOT use scopes larger than link-local
  • Resolution of timestamps now milliseconds
  • Bug-fixes
    • Message syntax ABNF, use CRLF throughout

49. IETF, San Diego

Ott/Perkins/Kutscher

remaining issues
Remaining Issues
  • Security
    • Currently advocating DES
    • Adopt AES, padding is already considered
  • IPv6
    • Should already be considered, need to check once more
  • References in draft
    • Check normative references etc.
  • Congestion Control required?
    • Remember: link-local scope
    • Cannot determine link bandwidth reliably
      • There may not be receivers behind every bridge…
  • IANA
    • Scope-relative address and port number
    • Registration has been requested…

49. IETF, San Diego

Ott/Perkins/Kutscher

next steps
Next steps
  • Mbus-transport essentially stable
    • Pending small changes...
    • No further features/changes planned
  • One more draft submission before WG-last-call?
    • Standards Track or Informational?

49. IETF, San Diego

Ott/Perkins/Kutscher

http www dmn tzi org ietf mmusic mbus
http://www.dmn.tzi.org/ietf/mmusic/mbus/

49. IETF, San Diego

Ott/Perkins/Kutscher

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