Browse Prior Art Database

Network Hierarchy and Multilayer Survivability (RFC3386)

IP.com Disclosure Number: IPCOM000010233D
Original Publication Date: 2002-Nov-01
Included in the Prior Art Database: 2002-Nov-08
Document File: 28 page(s) / 65K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

W. Lai: AUTHOR [+4]

Abstract

This document presents a proposal of the near-term and practical requirements for network survivability and hierarchy in current service provider environments.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 4% of the total text.

Network Working Group                                        W. Lai, Ed.

Request for Comments: 3386                                          AT&T

Category: Informational                                  D. McDysan, Ed.

                                                                WorldCom

                                                           November 2002

            Network Hierarchy and Multilayer Survivability

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 presents a proposal of the near-term and practical

   requirements for network survivability and hierarchy in current

   service provider environments.

Conventions used in this document

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",

   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this

   document are to be interpreted as described in BCP 14, RFC 2119 [2].

Lai, et. al.                 Informational                      [Page 1]

RFC 3386          Hierarchy & Multilayer Survivability     November 2002

Table of Contents

   1. Introduction..............................................2

   2. Terminology and Concepts..................................5

   2.1 Hierarchy................................................6

   2.1.1 Vertical Hierarchy.....................................5

   2.1.2 Horizontal Hierarchy...................................6

   2.2 Survivability Terminology................................6

   2.2.1 Survivability..........................................7

   2.2.2 Generic Operations.....................................7

   2.2.3 Survivability Techniques...............................8

   2.2.4 Survivability Performance..............................9

   2.3 Survivability Mechanisms: Comparison....................10

   3. Survivability............................................11

   3.1 Scope...................................................11

   3.2 Required initial set of survivability mechanisms........12

   3.2.1 1:1 Path Protection with Pre-Established Capacity.....12

   3.2.2 1:1 Path Protection with Pre-Planned Capacity.........13

   3.2.3 Local Restoration.....................................13

   3.2.4 Path Restoration......................................14

   3.3 Applications Supported..................................14

   3.4 Timing Bounds for Survivability Mechanisms..............15

   3.5 Coordination Among Layers...............................16

   3.6 Ev...