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Assignment of the 'OAM Alert Label' for Multiprotocol Label Switching Architecture (MPLS) Operation and Maintenance (OAM) Functions (RFC3429)

IP.com Disclosure Number: IPCOM000010306D
Original Publication Date: 2002-Nov-01
Included in the Prior Art Database: 2002-Nov-20
Document File: 7 page(s) / 11K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

H. Ohta: AUTHOR

Abstract

This document describes the assignment of one of the reserved label values defined in RFC 3032 (MPLS label stack encoding) to the 'Operation and Maintenance (OAM) Alert Label' that is used by user- plane Multiprotocol Label Switching Architecture (MPLS) OAM functions for identification of MPLS OAM packets.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 26% of the total text.

Network Working Group� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � H. Ohta

Request for Comments: 3429� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � NTT

Category: Informational� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � November 2002

� � � � � � � � � � � � � � � Assignment of the 'OAM Alert Label' for

� � � � � � � � � � Multiprotocol Label Switching Architecture (MPLS)

� � � � � � � � � � � � � Operation and Maintenance (OAM) Functions

Status of this Memo

� � This memo provides information for the Internet community.� It does

� � not specify an Internet standard of any kind.� Distribution of this

� � memo is unlimited.

Copyright Notice

� � Copyright (C) The Internet Society (2002).� All Rights Reserved.

Abstract

� � This document describes the assignment of one of the reserved label

� � values defined in RFC 3032 (MPLS label stack encoding) to the

� � 'Operation and Maintenance (OAM) Alert Label' that is used by user-

� � plane Multiprotocol Label Switching Architecture (MPLS) OAM functions

� � for identification of MPLS OAM packets.

1. Introduction

� � This document describes the assignment of one of the reserved label

� � values defined in RFC 3032 (MPLS label stack encoding [2]) to the

� � 'OAM Alert Label' that is used by user-plane MPLS OAM functions for

� � identification of MPLS OAM packets as described in the ITU-T

� � Recommendation Y.1711 [1] (on MPLS OAM functions).

2. OAM functions

� � MPLS OAM (Operation and Maintenance) functions provide necessary

� � tools for network operators to operate and maintain the networks.

� � MPLS OAM functionality is required at the MPLS layer, and more

� � specifically at each MPLS level, independent of OAM functionality

� � provided by the lower layers (SONET/SDH, etc.).� The objectives of

� � the OAM functions include the following:

� � -� Defect and failure detection: Defect/failures affecting the

� � � � � transport of user information are detected by continuous or

� � � � � periodic checking.� As a result, maintenance event information or

� � � � � appropriate alarms will be produced.

Ohta� � � � � � � � � � � � � � � � � � � � � � � � Informational� � � � � � � � � � � � � � � � � � � � � [Page 1]

RFC 3429� � � � � � � � � � OAM Alert Label for OAM Functions� � � � � � November 2002

� � -� Reporting the defect/failure information: Defect information is

� � � � � given to other management entities (e.g., Operation Support

� � � � � System) in order to provide the appropriate indications to the

� � � � � maintenance staff for maintaining the Quality of Service (QoS)

� � � � � level offered to customers.

� � -� Defect/failure localization: Determination by internal or external

� � � � � test systems of a failed entity is performed if defect information

� � � � � is insufficient.

� � -� Performance monitoring: Performance (packet losses, transfer

� � � � � delay, bit errors, etc.) of the user in...