draft-ietf-bess-ir-04.txt   draft-ietf-bess-ir-05.txt 
BESS Working Group E. Rosen, Ed. BESS Working Group E. Rosen, Ed.
Internet-Draft Juniper Networks, Inc. Internet-Draft Juniper Networks, Inc.
Updates: 6513,6514 (if approved) K. Subramanian Updates: 6513,6514 (if approved) K. Subramanian
Intended status: Standards Track Cisco Systems, Inc. Intended status: Standards Track Sproute Networks
Expires: February 6, 2017 Z. Zhang Expires: February 16, 2017 Z. Zhang
Juniper Networks, Inc. Juniper Networks, Inc.
August 5, 2016 August 15, 2016
Ingress Replication Tunnels in Multicast VPN Ingress Replication Tunnels in Multicast VPN
draft-ietf-bess-ir-04 draft-ietf-bess-ir-05
Abstract Abstract
RFCs 6513, 6514, and other RFCs describe procedures by which a RFCs 6513, 6514, and other RFCs describe procedures by which a
Service Provider may offer Multicast VPN service to its customers. Service Provider may offer Multicast VPN service to its customers.
These procedures create point-to-multipoint (P2MP) or multipoint-to- These procedures create point-to-multipoint (P2MP) or multipoint-to-
multipoint trees across the Service Provider's backbone. One type of multipoint trees across the Service Provider's backbone. One type of
P2MP tree that may be used is known as an "Ingress Replication (IR) 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 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 connected" to its child nodes. When a parent node has to send a
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on February 6, 2017. This Internet-Draft will expire on February 16, 2017.
Copyright Notice Copyright Notice
Copyright (c) 2016 IETF Trust and the persons identified as the Copyright (c) 2016 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
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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Rest of the Leaf A-D Route". The route key of the Leaf A-D route has Rest of the Leaf A-D Route". The route key of the Leaf A-D route has
the form of the "S-PMSI Route-Type Specific NLRI" in this case, and the form of the "S-PMSI Route-Type Specific NLRI" in this case, and
that should be considered to be the IR P-tunnel identifier. Note that should be considered to be the IR P-tunnel identifier. Note
that the procedure for finding the UMH is different in this case; the that the procedure for finding the UMH is different in this case; the
UMH is the next hop of the best UMH-eligible route towards the UMH is the next hop of the best UMH-eligible route towards the
"ingress PE". See the section of that document entitled "Determining "ingress PE". See the section of that document entitled "Determining
the Upstream ABR/PE/ASBR (Upstream Node)". the Upstream ABR/PE/ASBR (Upstream Node)".
5. The PTA's 'Tunnel Identifier' Field 5. The PTA's 'Tunnel Identifier' Field
As previously specified, when the "Tunnel Type" field of a PTA is set As discussed in Section 1, when the "Tunnel Type" field of a PTA is
to "IR", the "Tunnel Identifier" field of that PTA does not contain set to "IR", the "Tunnel Identifier" field of that PTA does not
the IR P-tunnel identifier. This section specifies the procedures contain the IR P-tunnel identifier. This section (Section 5)
for setting the "Tunnel Identifier" field of the PTA when the "Tunnel specifies the procedures for setting the "Tunnel Identifier" field of
Type" field of the PTA is set to "IR". the PTA when the "Tunnel Type" field of the PTA is set to "IR".
If the "Tunnel Type" field of a PTA is set to "IR", its "Tunnel If the "Tunnel Type" field of a PTA is set to "IR", its "Tunnel
Identifier" field is significant only when one of the following two Identifier" field is significant only when one of the following two
conditions holds: conditions holds:
o The PTA is carried by a Leaf A-D route, or o The PTA is carried by a Leaf A-D route, or
o The "Leaf Information Required" bit of the "Flags" field of the o The "Leaf Information Required" bit of the "Flags" field of the
PTA is not set. PTA is not set.
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Eric C. Rosen (editor) Eric C. Rosen (editor)
Juniper Networks, Inc. Juniper Networks, Inc.
10 Technology Park Drive 10 Technology Park Drive
Westford, Massachusetts 01886 Westford, Massachusetts 01886
United States United States
Email: erosen@juniper.net Email: erosen@juniper.net
Karthik Subramanian Karthik Subramanian
Cisco Systems, Inc. Sproute Networks
170 Tasman Drive
San Jose, California 95134 Email: karthik@sproute.com
United States
Email: kartsubr@cisco.com
Zhaohui Zhang Zhaohui Zhang
Juniper Networks, Inc. Juniper Networks, Inc.
10 Technology Park Drive 10 Technology Park Drive
Westford, Massachusetts 01886 Westford, Massachusetts 01886
United States United States
Email: zzhang@juniper.net Email: zzhang@juniper.net
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