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Multicast Support for 6rd

Multicast Support for 6rd. Behcet Sarikaya. draft-sarikaya-softwire-6rdmulticast-01.txt. 6rd Multicast. 6rd CPE MUST support MLD Proxy 6rd BR MUST support MLD Querier ASM/SSM transparently supported For SSM MLDv2 must be supported. 6rd BR. IPv4. IPv4 Network. IPv6 Network. CE.

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Multicast Support for 6rd

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  1. Multicast Support for 6rd Behcet Sarikaya • draft-sarikaya-softwire-6rdmulticast-01.txt

  2. 6rd Multicast • 6rd CPE MUST support MLD Proxy • 6rd BR MUST support MLD Querier • ASM/SSM transparently supported • For SSM MLDv2 must be supported 6rd BR IPv4 IPv4 Network IPv6 Network CE 6-in-4 tunnel IPv6 MLD Proxy MLD Querier

  3. 6rd Multicast Operation • 6rd customer edge device (CE) is MLD Proxy • 6rd CE establishes tunnel interface with 6rd BR • MLD messages and v6 multicast data are carried in v6 in v4 tunnel between CE and BR • The protocol is analogous to DS-Lite multicast but instead of IGMP, MLD is supported • PROS: Encapsulation based no translation • PROS: Does not require native multicast in access

  4. Layer 2 Support • Assumption: 6rd network supports IPv6 multicast in Layer 2 • Switches maintain a list of multicast routers and the ports using multicast router discovery protocol (RFC 4286) • MLD join/leave messages add/remove filter entries • Multicast data packets are forwarded downstream based on the filter entries • IPv6 snooping switches IPv4 protocol field values in IPv6-in-IPv4 tunnel

  5. Next steps • WG draft?

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