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Multicast Protocol for LLNs (draft-ietf-roll-trickle-mcast-02)

Multicast Protocol for LLNs (draft-ietf-roll-trickle-mcast-02). Jonathan Hui Richard Kelsey ROLL WG Meeting 85 th IETF Meeting Atlanta, Georgia. History. 2012-07-13: draft-ietf-roll-trickle-mcast-01 2012-10-19: draft-ietf-roll-trickle-mcast-02 IPv6-in-IPv6 encapsulation

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Multicast Protocol for LLNs (draft-ietf-roll-trickle-mcast-02)

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  1. Multicast Protocol for LLNs(draft-ietf-roll-trickle-mcast-02) Jonathan Hui Richard Kelsey ROLL WG Meeting 85th IETF Meeting Atlanta, Georgia 85th IETF Meeting – ROLL WG

  2. History • 2012-07-13: draft-ietf-roll-trickle-mcast-01 • 2012-10-19: draft-ietf-roll-trickle-mcast-02 • IPv6-in-IPv6 encapsulation • Proactive + Reactive Propagation • Discard packet on unrecognized HBH Option • Add reserved bits to HBH Option 84th IETF Meeting – ROLL WG

  3. Issues • 103: Disable proactive propagation • 104: Missing security considerations • 105: How to determine scope of MPL domain? • 106: Always use IPv6-in-IPv6 encapsulation? • 107: Support multiple parameter sets? • 108: Explicit version field? • 109: Use well-known multicast addr? • 110: Receive non-MPL multicast packets? 85th IETF Meeting – ROLL WG

  4. 105: MPL Domains • How to limit scope of MPL dissemination? • Physical extent of connected MPL devices • Something smaller than Option 1. • How to identify the MPL domain? • Application IPv6 multicast addresses • Explicit IPv6 multicast address • MPL Domain/Instance identifier 85th IETF Meeting – ROLL WG

  5. How to determine MPL domain?Application IPv6 multicast addresses • Combine domain and app endpoint identifiers • Outer IPv6 Destination Address (when used) • Well-known link-local MPL address • Inner IPv6 Destination Address • Full address defines application endpoints • Prefix defines MPL domain • Comments • Does not require 6in6 • Link-local destination address in outer header • Forwarding logic requires both MPL Option (outer) and IPv6 Destination (inner) • How to support arbitrary multicast addresses? 85th IETF Meeting – ROLL WG

  6. How to determine MPL domain?Explicit IPv6 multicast address • Separate domain and app endpoint identifiers • Outer IPv6 Destination Address (when used) • Non-link-local multicast address identifies MPL domain • Inner IPv6 Destination Address • Identifies application endpoints • Comments • Requires 6in6 encapsulation when MPL domain and endpoint addresses do not match • Non-link-local destination address in outer header • Forwarding logic inspects a single header • Must configure MPL interfaces with MPL group address 85th IETF Meeting – ROLL WG

  7. How to determine MPL domain?MPL Instance ID • Include “Instance ID” in MPL Option • Outer IPv6 Destination Address (when used) • Well-known link-local MPL address • Inner IPv6 Destination Address • Identifies application endpoints • Comments • Does not require 6in6 • Link-local destination address in outer header • Forwarding logic inspects a single header • Must configure MPL interfaces with Instance ID 85th IETF Meeting – ROLL WG

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