1. Framework & Requirements for an Access Node Control Mechanism in Broadband Multi-Service Networks ANCP WG IETF 73 – Minneapolis draft-ietf-ancp-framework-07.txt Presenter:

2. Main Updates in v07 Multicast admission control expanded per IETF discussion –Adopted concepts of draft-maglione-ancp-mcast-01.txt Clarified the notion of Bandwidth Delegation –Updated different Admission Control mechanisms –Updated corresponding Access Node and NAS requirements

3. Main Updates in v07 – Multicast Admission Control –Option 1: AN processes IGMP and queries the NAS for CAC decision Admission Request / Admission Response Can be enhanced with the notion of “Delegation of Authorization” –NAS delegates authority to the Access Node to perform multicast Admission Control on the Access Loop –aka “Bandwidth Delegation” –Option 2: AN does not process IGMP; NAS performs CAC decision and instructs the AN All subscriber IGMP signaling is terminated on the NAS –Option 3: Policy Server queries the AN (no ANCP used) Can be enhanced with “Delegation of Authorization” –Policy Server delegates authority to the Access Node to perform multicast Admission Control on the Access Loop

4. Main Updates in v07 – Bandwidth Delegation Notion of “Delegation of Authority” / “Bandwidth Delegation” –In case Admission Control is required on the Access Node, it needs to know within which bounds it is authorized to do so –=> NAS needs to delegate authority to perform Admission Control Changing delegated bandwidth –Initially delegated BW on AN is insufficient to accept a new multicast request AN can use ANCP to request additional delegated multicast bandwidth –NAS / Policy Server needs to free up bandwidth for unicast services NAS can use ANCP to query (or instruct) the AN to decrease the multicast bandwidth previously delegated –AN may have excess delegated but uncommitted bandwidth AN can use use ANCP to release unused multicast bandwidth previously delegated

5. Conclusion At this point, the draft has no outstanding points –Framework and use cases defined at sufficient level of detail to guide protocol design work –Related work done by Broadband Forum expected to become a Technical Report by end of this year The authors believe draft-ietf-ancp-framework-05 is ready for Last Call

6. Backup

7. History Jan 2006: draft-ooghe-l2cp-framework-00.txt submitted for L2CP BOF May 2006:draft-ooghe-ancp-framework-00.txt November 2006: draft-ietf-ancp-framework-00.txt March 2007:draft-ietf-ancp-framework-01.txt July 2007:draft-ietf-ancp-framework-02.txt October 2007:draft-ietf-ancp-framework-03.txt November 2007:draft-ietf-ancp-framework-04.txt February 2008:draft-ietf-ancp-framework-05.txt May 2008:draft-ietf-ancp-framework-06.txt November 2008:draft-ietf-ancp-framework-07.txt