A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching Working Group of the
IETF.
Title : MPLS Support of Differentiated Services
Author(s) : F. Le Faucheur, L. Wu, B. Davie, S. Davari,
P. Vaananen, R. Krishnan, P. Cheval
Filename : draft-ietf-mpls-diff-ext-02.txt
Pages : 13
Date : 11-Oct-99
This document defines a flexible solution for support of
Differentiated Services (Diff-Serv) over Multi-Protocol Label
Switching (MPLS) networks.
This solution allows the MPLS network administrator to flexibly
define how Diff-Serv Behavior Aggregates (BAs) are mapped onto Label
Switched Paths so that he/she can best match the Diff-Serv, Traffic
Engineering and Fast Restoration objectives within his/her
particular network. For instance, this solution allows the network
administrator to decide whether different sets of BAs are to be
mapped onto the same LSP or mapped onto separate LSPs.
This solution relies on combined use of two types of LSPs:
- LSPs where both the Behavior Aggregate's scheduling treatment
and its drop precedence are conveyed to the LSR in the EXP field of
the MPLS Shim Header.
- LSPs where the Behavior Aggregate's scheduling treatment is
inferred by the LSR from the packet's label value while the Behavior
Aggregate's drop precedence is indicated in the EXP field of the
MPLS Shim Header or in the encapsulating link layer specific
selective drop mechanism (ATM, Frame Relay, 802.1).
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