LDP Extensions for Hub and Spoke Multipoint Label Switched Path
RFC 7140
| Document | Type |
RFC - Proposed Standard
(March 2014; No errata)
Updated by RFC 7358
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Replaces | draft-jjwl-mpls-mldp-hsmp | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Loa Andersson | ||
| Shepherd write-up | Show (last changed 2013-11-26) | ||
| IESG | IESG state | RFC 7140 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Adrian Farrel | ||
| Send notices to | (None) | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Engineering Task Force (IETF) L. Jin
Request for Comments: 7140
Category: Standards Track F. Jounay
ISSN: 2070-1721 Orange CH
IJ. Wijnands
Cisco Systems, Inc
N. Leymann
Deutsche Telekom AG
March 2014
LDP Extensions for Hub and Spoke Multipoint Label Switched Path
Abstract
This document introduces a hub and spoke multipoint (HSMP) Label
Switched Path (LSP), which allows traffic from root to leaf through
point-to-multipoint (P2MP) LSPs and also leaf to root along the
reverse path. That means traffic entering the HSMP LSP from the
application/customer at the root node travels downstream to each leaf
node, exactly as if it were traveling downstream along a P2MP LSP to
each leaf node. Upstream traffic entering the HSMP LSP at any leaf
node travels upstream along the tree to the root, as if it were
unicast to the root. Direct communication among the leaf nodes is
not allowed.
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/rfc7140.
Jin, et al. Standards Track [Page 1]
RFC 7140 LDP Extensions for HSMP LSP March 2014
Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Setting Up HSMP LSP with LDP . . . . . . . . . . . . . . . . 4
3.1. Support for HSMP LSP Setup with LDP . . . . . . . . . . . 4
3.2. HSMP FEC Elements . . . . . . . . . . . . . . . . . . . . 5
3.3. Using the HSMP FEC Elements . . . . . . . . . . . . . . . 5
3.4. HSMP LSP Label Map . . . . . . . . . . . . . . . . . . . 6
3.4.1. HSMP LSP Leaf Node Operation . . . . . . . . . . . . 7
3.4.2. HSMP LSP Transit Node Operation . . . . . . . . . . . 7
3.4.3. HSMP LSP Root Node Operation . . . . . . . . . . . . 8
3.5. HSMP LSP Label Withdraw . . . . . . . . . . . . . . . . . 9
3.5.1. HSMP Leaf Operation . . . . . . . . . . . . . . . . . 9
3.5.2. HSMP Transit Node Operation . . . . . . . . . . . . . 9
3.5.3. HSMP Root Node Operation . . . . . . . . . . . . . . 10
3.6. HSMP LSP Upstream LSR Change . . . . . . . . . . . . . . 10
3.7. Determining Forwarding Interface . . . . . . . . . . . . 10
4. HSMP LSP on a LAN . . . . . . . . . . . . . . . . . . . . . . 11
5. Redundancy Considerations . . . . . . . . . . . . . . . . . . 11
6. Failure Detection of HSMP LSP . . . . . . . . . . . . . . . . 11
7. Security Considerations . . . . . . . . . . . . . . . . . . . 12
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12
8.1. New LDP FEC Element Types . . . . . . . . . . . . . . . . 12
8.2. HSMP LSP Capability TLV . . . . . . . . . . . . . . . . . 13
8.3. New Sub-TLVs for the Target Stack TLV . . . . . . . . . . 13
9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 13
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 14
10.1. Normative References . . . . . . . . . . . . . . . . . . 14
10.2. Informative References . . . . . . . . . . . . . . . . . 14
Jin, et al. Standards Track [Page 2]
RFC 7140 LDP Extensions for HSMP LSP March 2014
1. Introduction
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