RSVP-TE Signaling Procedure for End-to-End GMPLS Restoration and Resource Sharing (RFC8131)
Original Publication Date: 2017-Mar-01
Included in the Prior Art Database: 2017-Mar-23
Internet Society Requests For Comment (RFCs)
X. Zhang: AUTHOR [+7]
Generalized Multiprotocol Label Switching (GMPLS) [RFC3945] defines a set of protocols, including Open Shortest Path First - Traffic Engineering (OSPF-TE) [RFC4203] and Resource Reservation Protocol - Traffic Engineering (RSVP-TE) [RFC3473]. These protocols can be used to set up Label Switched Paths (LSPs) in non-packet transport networks. The GMPLS protocol extends MPLS to support interfaces capable of Time Division Multiplexing (TDM), Lambda Switching and Fiber Switching. These switching technologies provide several protection schemes [RFC4426] [RFC4427] (e.g., 1+1, 1:N, and M:N).
Internet Engineering Task Force (IETF) X. Zhang Request for Comments: 8131 H. Zheng, Ed. Category: Informational Huawei Technologies ISSN: 2070-1721 R. Gandhi, Ed. Z. Ali Cisco Systems, Inc. P. Brzozowski ADVA Optical March 2017
RSVP-TE Signaling Procedure for End-to-End GMPLS Restoration and Resource Sharing
In non-packet transport networks, there are requirements where the Generalized Multiprotocol Label Switching (GMPLS) end-to-end recovery scheme needs to employ a restoration Label Switched Path (LSP) while keeping resources for the working and/or protecting LSPs reserved in the network after the failure occurs.
This document reviews how the LSP association is to be provided using Resource Reservation Protocol - Traffic Engineering (RSVP-TE) signaling in the context of a GMPLS end-to-end recovery scheme when using restoration LSP where failed LSP is not torn down. In addition, this document discusses resource sharing-based setup and teardown of LSPs as well as LSP reversion procedures. No new signaling extensions are defined by this document, and it is strictly informative in nature.
Status of This Memo
This document is not an Internet Standards Track specification; it is published for informational purposes.
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). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see 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/rfc8131.
Zhang, et al. Informational [Page 1]
RFC 8131 GMPLS Restoration an...