Ingress Replication Tunnels in Multicast VPN (RFC7988)
Original Publication Date: 2016-Oct-01
Included in the Prior Art Database: 2016-Oct-07
Internet Society Requests For Comment (RFCs)
E. Rosen: AUTHOR [+4]
RFCs 6513, 6514, and other RFCs describe procedures by which a Service Provider (SP) may offer Multicast VPN (MVPN) service to its customers. These procedures create point-to-multipoint (P2MP) or multipoint-to-multipoint (MP2MP) tunnels, called "P-tunnels" (provider tunnels), across the SP's backbone network. Customer multicast traffic is carried through the P-tunnels.
Internet Engineering Task Force (IETF) E. Rosen, Ed. Request for Comments: 7988 Juniper Networks, Inc. Updates: 6513, 6514 K. Subramanian Category: Standards Track Sproute Networks ISSN: 2070-1721 Z. Zhang Juniper Networks, Inc. October 2016
Ingress Replication Tunnels in Multicast VPN
RFCs 6513, 6514, and other RFCs describe procedures by which a
Service Provider may offer Multicast VPN (MVPN) service to its
customers. These procedures create point-to-multipoint (P2MP) or
multipoint-to-multipoint (MP2MP) trees across the Service Provider's
backbone. One type of P2MP tree that may be used is known as an
"Ingress Replication (IR) tunnel". In an IR tunnel, a parent node
need not be directly connected to its child nodes. When a parent
node has to send a multicast data packet to its n child nodes, it
does not use Layer 2 multicast, IP multicast, or MPLS multicast to do
so. Rather, it makes n individual copies, and then unicasts each
copy, through an IP or MPLS unicast tunnel, to exactly one child
node. While the prior MVPN specifications allow the use of IR
tunnels, those specifications are not always very clear or explicit
about how the MVPN protocol elements and procedures are applied to IR
tunnels. This document updates RFCs 6513 and 6514 by adding
additional details that are specific to the use of IR tunnels.
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 7841.
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/rfc7988.
Rosen, et al. Standards Track [Page 1]
RFC 7988 IR Tunnels in MVPN October 2016
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