Make-Before-Break MPLS-TE LSP restoration and reoptimization procedure using Stateful PCE
draft-tanaka-pce-stateful-pce-mbb-03
| Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Expired".
Expired & archived
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| Authors | Yosuke Tanaka , Yuji Kamite , Dhruv Dhody | ||
| Last updated | 2014-08-17 (Latest revision 2014-02-13) | ||
| RFC stream | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | Expired | |
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
Stateful Path Computation Element (PCE) and its corresponding protocol extensions provide a mechanism that enables PCE to do stateful control of Multiprotocol Label Switching (MPLS) Traffic Engineering Label Switched Paths (TE LSP). Stateful PCE supports manipulating of the existing LSP's state and attributes (e.g., bandwidth and path) via delegation and also instantiation of new LSPs in the network via PCE Initiation. In the current MPLS TE network using Resource ReSerVation Protocol (RSVP-TE), LSPs are often controlled by Make-before-break (M-B-B) signaling by the headend for the purpose of LSP restoration and reoptimization. In most cases, it is an essential operation to reroute LSP traffic without any data disruption. This document specifies the procedure of applying stateful PCE's control to make-before-break RSVP-TE signaling. In this document, two types of restoration/reoptimization procedures are defined, implicit mode and explicit mode. This document also specifies the usage and handling of stateful PCEP (PCE Communication Protocol) messages, expected behavior of PCC as RSVP-TE headend and necessary extensions of additional PCEP objects.
Authors
Yosuke Tanaka
Yuji Kamite
Dhruv Dhody
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)