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
|
|
---|---|---|---|
Authors | Lizhong Jin , Frederic JOUNAY , IJsbrand Wijnands , Nicolai Leymann | ||
Last updated | 2015-10-14 | ||
Replaces | draft-jjwl-mpls-mldp-hsmp | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized 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. IntroductionShow full document text