MPLS Support of Differentiated Services by ATM LSRs and Frame Relay LSRs
draft-wu-mpls-diff-ext-01

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Last updated 1999-02-26
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-wu-mpls-diff-ext-01.txt

Abstract

This document proposes updates to the current MPLS LDP and MPLS RSVP messages for LSP establishment in order to support Differentiated Services (Diff-Serv) over ATM LSRs and Frame Relay LSRs. In brief, we propose that: - a set of PHBs that requires no misordering of packets in a microflow (even if the microflow contains packets for more than one PHB) be defined as a PHB forwarding class (PFC); - packets that belong to the same PFC and the same forwarding equivalence class (FEC) should be transported over the same ATM LSP or FR LSP; - for a given FEC, a separate ATM LSP or FR LSP should be established for each PFC, so that multiple ATM or FR LSPs are established in parallel for support of Diff-Serv; - among the set of PHBs transported over the same ATM LSP or FR LSP, the different PHBs' drop precedences be mapped into, and enforced via, the layer 2 specific selective discard mechanism (CLP bit with ATM, DE bit with FR).

Authors

Bruce Davie (bsd@cisco.com)
Pasi Vaananen (pasi.vaananen@ntc.nokia.com)
Liwen Wu (liwen.wu@adn.alcatel.com)
Pierrick Cheval (pierrick.cheval@adn.alcatel.com)
Fran├žois Le Faucheur (flefauch@cisco.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)