PathErr Message Triggered MPLS and GMPLS LSP Reroutes
Draft of message to be sent after approval:
From: The IESG <email@example.com> To: IETF-Announce <firstname.lastname@example.org> Cc: Internet Architecture Board <email@example.com>, RFC Editor <firstname.lastname@example.org>, mpls mailing list <email@example.com>, mpls chair <firstname.lastname@example.org> Subject: Protocol Action: 'PathErr Message Triggered MPLS and GMPLS LSP Reroute' to Proposed Standard The IESG has approved the following document: - 'PathErr Message Triggered MPLS and GMPLS LSP Reroute ' <draft-ietf-mpls-gmpls-lsp-reroute-06.txt> as a Proposed Standard This document is the product of the Multiprotocol Label Switching Working Group. The IESG contact persons are Adrian Farrel and Ross Callon. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-mpls-gmpls-lsp-reroute-06.txt
Technical Summary This document describes how RSVP PathErr Messages may be used to trigger rerouting of MPLS and GMPLS point-to-point TE-LSPs without first removing LSP state or resources. There are a number of cases where such rerouting is beneficial, e.g. soft-preemption and graceful shutdown. This document defines a new reroute-specific error code to allow for future definition of reroute application-specific error values. Working Group Summary This document was produced by the WG to help resolve issues with draft-ietf-mpls-soft-preemption. There was a fair degree of support for the concepts of soft preemption and graceful shutdown, so the common pieces were removed from draft-ietf-mpls-soft-preemption and added to this document. Document Quality There are currently no implementations of this work. We may assume from the level of interest in graceful shutdown and soft preemption that implementations are likely soon. Personnel Loa Andersson is the Document Shepherd. Adrian Farrel is the Responsible Area Director.