Internet Engineering Task Force (IETF) R. Aggarwal, Ed.
Request for Comments: 7117 Juniper Networks
Category: Standards Track Y. Kamite
ISSN: 2070-1721 NTT Communications
L. Fang
Microsoft
Y. Rekhter
Juniper Networks
C. Kodeboniya
February 2014
Multicast in Virtual Private LAN Service (VPLS)
Abstract
RFCs 4761 and 4762 describe a solution for Virtual Private LAN
Service (VPLS) multicast that relies on the use of point-to-point or
multipoint-to-point unicast Label Switched Paths (LSPs) for carrying
multicast traffic. This solution has certain limitations for certain
VPLS multicast traffic profiles. For example, it may result in
highly non-optimal bandwidth utilization when a large amount of
multicast traffic is to be transported.
This document describes solutions for overcoming a subset of the
limitations of the existing VPLS multicast solution. It describes
procedures for VPLS multicast that utilize multicast trees in the
service provider (SP) network. The solution described in this
document allows sharing of one such multicast tree among multiple
VPLS instances. Furthermore, the solution described in this document
allows a single multicast tree in the SP network to carry traffic
belonging only to a specified set of one or more IP multicast streams
from one or more VPLS instances.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7117.
Aggarwal, et al. Standards Track [Page 1]RFC 7117 Multicast in VPLS February 2014Copyright Notice
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Aggarwal, et al. Standards Track [Page 2]RFC 7117 Multicast in VPLS February 2014Table of Contents
1. Introduction ....................................................4
2. Terminology .....................................................5
2.1. Specification of Requirements ..............................6
3. Overview ........................................................6
3.1. Inclusive and Selective Multicast Trees ....................7
3.2. BGP-Based VPLS Membership Auto-discovery ...................8
3.3. IP Multicast Group Membership Discovery ....................8
3.4. Advertising P-Multicast Tree to VPLS/C-Multicast Binding ...9
3.5. Aggregation ...............................................10
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