draft-ietf-softwire-dslite-multicast-06.txt   draft-ietf-softwire-dslite-multicast-07.txt 
Softwire WG J. Qin Softwire WG J. Qin
Internet-Draft Cisco Internet-Draft Cisco
Intended status: Standards Track M. Boucadair Intended status: Standards Track M. Boucadair
Expires: April 10, 2014 C. Jacquenet Expires: September 26, 2014 C. Jacquenet
France Telecom France Telecom
Y. Lee Y. Lee
Comcast Comcast
Q. Wang Q. Wang
China Telecom China Telecom
October 07, 2013 March 25, 2014
Delivery of IPv4 Multicast Services to IPv4 Clients over an IPv6 Delivery of IPv4 Multicast Services to IPv4 Clients over an IPv6
Multicast Network Multicast Network
draft-ietf-softwire-dslite-multicast-06 draft-ietf-softwire-dslite-multicast-07
Abstract Abstract
This document specifies a solution for the delivery of IPv4 multicast This document specifies a solution for the delivery of IPv4 multicast
services to IPv4 clients over an IPv6 multicast network. The services to IPv4 clients over an IPv6 multicast network. The
solution relies upon a stateless IPv4-in-IPv6 encapsulation scheme solution relies upon a stateless IPv4-in-IPv6 encapsulation scheme
and uses the IPv6 multicast distribution tree to deliver IPv4 and uses the IPv6 multicast distribution tree to deliver IPv4
multicast traffic. The solution is particularly useful for the multicast traffic. The solution is particularly useful for the
delivery of multicast service offerings to DS-Lite serviced delivery of multicast service offerings to DS-Lite serviced
customers. customers.
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
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This Internet-Draft will expire on April 10, 2014. This Internet-Draft will expire on September 26, 2014.
Copyright Notice Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
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include Simplified BSD License text as described in Section 4.e of include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License. described in the Simplified BSD License.
Table of Contents Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 4 1.1. Requirements Language . . . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Solution Overview . . . . . . . . . . . . . . . . . . . . . . 5 4. Solution Overview . . . . . . . . . . . . . . . . . . . . . . 5
4.1. IPv4-Embedded IPv6 Prefixes . . . . . . . . . . . . . . . 6 4.1. IPv4-Embedded IPv6 Prefixes . . . . . . . . . . . . . . . 6
4.2. Multicast Distribution Tree Computation . . . . . . . . . 6 4.2. Multicast Distribution Tree Computation . . . . . . . . . 7
4.3. Multicast Data Forwarding . . . . . . . . . . . . . . . . 7 4.3. Multicast Data Forwarding . . . . . . . . . . . . . . . . 8
5. Address Mapping . . . . . . . . . . . . . . . . . . . . . . . 8 5. Address Mapping . . . . . . . . . . . . . . . . . . . . . . . 8
5.1. Prefix Assignment . . . . . . . . . . . . . . . . . . . . 8 5.1. Prefix Assignment . . . . . . . . . . . . . . . . . . . . 8
5.2. Address Translation Algorithm . . . . . . . . . . . . . . 9 5.2. Address Translation Algorithm . . . . . . . . . . . . . . 9
5.3. Textual Representation . . . . . . . . . . . . . . . . . 9 5.3. Textual Representation . . . . . . . . . . . . . . . . . 9
5.4. Examples . . . . . . . . . . . . . . . . . . . . . . . . 9 5.4. Examples . . . . . . . . . . . . . . . . . . . . . . . . 9
6. Multicast B4 (mB4) . . . . . . . . . . . . . . . . . . . . . 9 6. Multicast B4 (mB4) . . . . . . . . . . . . . . . . . . . . . 10
6.1. IGMP-MLD Interworking Function . . . . . . . . . . . . . 10 6.1. IGMP-MLD Interworking Function . . . . . . . . . . . . . 10
6.2. Multicast Data Forwarding . . . . . . . . . . . . . . . . 10 6.2. Multicast Data Forwarding . . . . . . . . . . . . . . . . 10
6.3. Fragmentation . . . . . . . . . . . . . . . . . . . . . . 11 6.3. Fragmentation . . . . . . . . . . . . . . . . . . . . . . 11
6.4. Host built-in mB4 Function . . . . . . . . . . . . . . . 11 6.4. Host built-in mB4 Function . . . . . . . . . . . . . . . 11
6.5. Preserve the Scope . . . . . . . . . . . . . . . . . . . 11 6.5. Preserve the Scope . . . . . . . . . . . . . . . . . . . 11
7. Multicast AFTR (mAFTR) . . . . . . . . . . . . . . . . . . . 11 7. Multicast AFTR (mAFTR) . . . . . . . . . . . . . . . . . . . 11
7.1. Routing Considerations . . . . . . . . . . . . . . . . . 11 7.1. Routing Considerations . . . . . . . . . . . . . . . . . 11
7.2. Processing PIM Message . . . . . . . . . . . . . . . . . 12 7.2. Processing PIM Message . . . . . . . . . . . . . . . . . 12
7.3. Switching from Shared Tree to Shortest Path Tree . . . . 13 7.3. Switching from Shared Tree to Shortest Path Tree . . . . 13
7.4. Multicast Data Forwarding . . . . . . . . . . . . . . . . 13 7.4. Multicast Data Forwarding . . . . . . . . . . . . . . . . 13
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11.2. Informative References 11.2. Informative References
[I-D.ietf-mboned-multiaaa-framework] [I-D.ietf-mboned-multiaaa-framework]
Satou, H., Ohta, H., Hayashi, T., Jacquenet, C., and H. Satou, H., Ohta, H., Hayashi, T., Jacquenet, C., and H.
He, "AAA and Admission Control Framework for He, "AAA and Admission Control Framework for
Multicasting", draft-ietf-mboned-multiaaa-framework-12 Multicasting", draft-ietf-mboned-multiaaa-framework-12
(work in progress), August 2010. (work in progress), August 2010.
[I-D.ietf-mboned-v4v6-mcast-ps] [I-D.ietf-mboned-v4v6-mcast-ps]
Jacquenet, C., Boucadair, M., Lee, Y., Qin, J., Tsou, T., Jacquenet, C., Boucadair, M., Lee, Y., Qin, J., Tsou, T.,
and Q. Sun, "IPv4-IPv6 Multicast: Problem Statement and and Q. Qiong, "IPv4-IPv6 Multicast: Problem Statement and
Use Cases", draft-ietf-mboned-v4v6-mcast-ps-04 (work in Use Cases", draft-ietf-mboned-v4v6-mcast-ps-04 (work in
progress), September 2013. progress), September 2013.
[I-D.ietf-softwire-multicast-prefix-option] [I-D.ietf-softwire-multicast-prefix-option]
Boucadair, M., Qin, J., Tsou, T., and X. Deng, "DHCPv6 Boucadair, M., Qin, J., Tsou, T., and X. Deng, "DHCPv6
Option for IPv4-Embedded Multicast and Unicast IPv6 Option for IPv4-Embedded Multicast and Unicast IPv6
Prefixes", draft-ietf-softwire-multicast-prefix-option-04 Prefixes", draft-ietf-softwire-multicast-prefix-option-05
(work in progress), April 2013. (work in progress), October 2013.
[RFC2236] Fenner, W., "Internet Group Management Protocol, Version [RFC2236] Fenner, W., "Internet Group Management Protocol, Version
2", RFC 2236, November 1997. 2", RFC 2236, November 1997.
[RFC5735] Cotton, M. and L. Vegoda, "Special Use IPv4 Addresses", [RFC5735] Cotton, M. and L. Vegoda, "Special Use IPv4 Addresses",
RFC 5735, January 2010. RFC 5735, January 2010.
[RFC6676] Venaas, S., Parekh, R., Van de Velde, G., Chown, T., and [RFC6676] Venaas, S., Parekh, R., Van de Velde, G., Chown, T., and
M. Eubanks, "Multicast Addresses for Documentation", RFC M. Eubanks, "Multicast Addresses for Documentation", RFC
6676, August 2012. 6676, August 2012.
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