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Approaches to 6rd Multicast: Encapsulation and Translation Methods

This document outlines two fundamental approaches to 6rd multicast: the encapsulation approach and the translation approach. The encapsulation method involves tunneling signaling and data through an IPv4 network to/from an IPv6 multicast network. In contrast, the translation method utilizes native IPv4 multicast capabilities within the access network, requiring interworking of signaling. The document discusses the roles of various hosts and queries relevant to the IETF87 Softwires Working Group. It also aims to gather consensus on preferred methods moving forward.

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Approaches to 6rd Multicast: Encapsulation and Translation Methods

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  1. 6rd Multicast draft-sarikaya-softwire-6rdmulticast-05 Behcet Sarikaya <sarikaya@ieee.org> Tina Tsou <Tina.Tsou.Zouting@huawei.com> HuiJi <jihui@chinatelecom.com.cn> Cathy Zhou <cathy.zhou@huawei.com>

  2. Summary Two basic approaches Encapsulation approach routes signalling and data through the 6rd tunnel Translation approach uses native IPv4 multicast capability in the access network, requires interworking of signalling IETF87 Softwires WG

  3. Encapsulation Approach Host 1 Signalling and data tunneled across IPv4 network. Signalling out, data in To/from IPv6 multicast network Host 2 6rd BR MLD Querier MLD Proxy 6rd CE Host 3 IETF87 Softwires WG

  4. Translation Approach Signalling out, data in Host 1 To/from IPv6 multicast network Host 2 IGMP MLD Querier MLD IPv4 multicast network MLD Proxy IWF IWF 6rd BR 6rd CE Host 3 IETF87 Softwires WG

  5. Moving Forward Does WG agree with encapsulation approach? Does WG agree with translation approach? WG work item(s)? IETF87 Softwires WG

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