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Requirements for Signaling Protocols

By Brunner, M.

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Book Id: WPLBN0000693720
Format Type: PDF eBook
File Size: 96.43 KB.
Reproduction Date: 2005
Full Text

Title: Requirements for Signaling Protocols  
Author: Brunner, M.
Volume:
Language: English
Subject: Topology, Math, Technology
Collections: Technical eBooks Collection
Historic
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Brunner, M. (n.d.). Requirements for Signaling Protocols. Retrieved from http://kindle.worldlibrary.net/


Description
Technical Reference Publication

Excerpt
Introduction: This document is the product of the Next Steps in Signaling (NSIS) Working Group. It defines requirements for signaling across different network environments. It does not list any problems of existing signaling protocols such as [RSVP]. In order to derive requirements for signaling it is necessary to first have an idea of the scope within which they are applicable. Therefore, we list use cases and scenarios where an NSIS protocol could be applied. The scenarios are used to help derive requirements and to test the requirements against use cases.

Table of Contents
Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1. Keywords . . . . . . . . . . . . . . . . . . . . . . . . 5 2. Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. Problem Statement and Scope. . . . . . . . . . . . . . . . . . 6 4. Assumptions and Exclusions . . . . . . . . . . . . . . . . . . 8 4.1. Assumptions and Non-Assumptions. . . . . . . . . . . . . 8 4.2. Exclusions . . . . . . . . . . . . . . . . . . . . . . . 9 5. Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.1. Architecture and Design Goals. . . . . . . . . . . . . . 11 5.1.1. NSIS SHOULD Provide Availability Information on Request . . . . . . . . . . . . . . . . . . . 11 5.1.2. NSIS MUST be Designed Modularly. . . . . . . . . 11 5.1.3. NSIS MUST Decouple Protocol and Information. . . 12 5.1.4. NSIS MUST Support Independence of Signaling and Network Control Paradigm . . . . . . . . . . . . 12 5.1.5. NSIS SHOULD be Able to Carry Opaque Objects. . . 12 5.2. Signaling Flows. . . . . . . . . . . . . . . . . . . . . 12 5.2.1. The Placement of NSIS Initiator, Forwarder, and Responder Anywhere in the Network MUST be Allowed. . . . . . . . . . . . . . . . . . . . . 12 5.2.2. NSIS MUST Support Path-Coupled and MAY Support Path-Decoupled Signaling . . . . . . . . . . . . 13 5.2.3. Concealment of Topology and Technology Information SHOULD be Possible . . . . . . . . . 13 5.2.4. Transparent Signaling Through Networks SHOULD be Possible . . . . . . . . . . . . . . . . . . . . 13 5.3. Messaging. . . . . . . . . . . . . . . . . . . . . . . . 13 5.3.1. Explicit Erasure of State MUST be Possible . . . 13 5.3.2. Automatic Release of State After Failure MUST be Possible . . . . . . . . . . . . . . . . . . . . 14 5.3.3. NSIS SHOULD Allow for Sending Notifications Upstream . . . . . . . . . . . . . . . . . . . . 14 5.3.4. Establishment and Refusal to set up State MUST be Notified. . . . . . . . . . . . . . . . . . . 15 5.3.5. NSIS MUST Allow for Local Information Exchange . 15 5.4. Control Information. . . . . . . . . . . . . . . . . . . 16 5.4.1. Mutability Information on Parameters SHOULD be Possible . . . . . . . . . . . . . . . . . . . . 16 5.4.2. It SHOULD be Possible to Add and Remove Local Domain Information . . . . . . . . . . . . . . . 16 5.4.3. State MUST be Addressed Independent of Flow Identification . . . . . . . . . . . . . . . . . 16 5.4.4. Modification of Already Established State SHOULD be Seamless. . . . . . . . . . . . . . . . . . . 16 5.4.5. Grouping of Signaling for Several Micro-Flows MAY be Provided. . . . . . . . . . . . . . . . . 17

 

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