Network Working Group Y. Kamite, Ed.
Request for Comments: 5501 NTT Communications
Category: Informational Y. Wada
NTT
Y. Serbest
AT&T
T. Morin
France Telecom
L. Fang
Cisco Systems, Inc.
March 2009
Requirements for Multicast Support in Virtual Private LAN Services
Status of This Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
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Abstract
This document provides functional requirements for network solutions
that support multicast over Virtual Private LAN Service (VPLS). It
specifies requirements both from the end user and service provider
standpoints. It is intended that potential solutions will use these
requirements as guidelines.
Kamite, et al. Informational [Page 1]RFC 5501 Multicast VPLS Requirements March 2009Table of Contents
1. Introduction ....................................................3
1.1. Background .................................................3
1.2. Scope of This Document .....................................4
2. Conventions Used in This Document ...............................5
2.1. Terminology ................................................5
2.2. Conventions ................................................6
3. Problem Statements ..............................................6
3.1. Motivation .................................................6
3.2. Multicast Scalability ......................................7
3.3. Application Considerations .................................8
3.3.1. Two Perspectives of the Service .....................8
4. General Requirements ............................................9
4.1. Scope of Transport .........................................9
4.1.1. Traffic Types .......................................9
4.1.1.1. Multicast and Broadcast ....................9
4.1.1.2. Unknown Destination Unicast ................9
4.1.2. Multicast Packet Types ..............................9
4.1.3. MAC Learning Consideration .........................11
4.2. Static Solutions ..........................................11
4.3. Backward Compatibility ....................................11
5. Customer Requirements ..........................................12
5.1. CE-PE Protocol ............................................12
5.1.1. Layer-2 Aspect .....................................12
5.1.2. Layer-3 Aspect .....................................12
5.2. Multicast Domain ..........................................13
5.3. Quality of Service (QoS) ..................................14
5.4. SLA Parameters Measurement ................................14
5.5. Security ..................................................15
5.5.1. Isolation from Unicast .............................15
5.5.2. Access Control .....................................15
5.5.3. Policing and Shaping on Multicast ..................15
5.6. Access Connectivity .......................................15
5.7. Multi-Homing ..............................................15
5.8. Protection and Restoration ................................15
5.9. Minimum MTU ...............................................16
5.10. Frame Reordering Prevention ..............................16
5.11. Fate-Sharing between Unicast and Multicast ...............16
6. Service Provider Network Requirements ..........................18
6.1. Scalability ...............................................18
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