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GIST: General Internet Signalling Transport (RFC5971) Disclosure Number: IPCOM000200340D
Original Publication Date: 2010-Oct-01
Included in the Prior Art Database: 2010-Oct-07

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

H. Schulzrinne: AUTHOR [+1]


Signalling involves the manipulation of state held in network elements. 'Manipulation' could mean setting up, modifying, and tearing down state; or it could simply mean the monitoring of state that is managed by other mechanisms. This specification concentrates mainly on path-coupled signalling, controlling resources on network elements that are located on the path taken by a particular data flow, possibly including but not limited to the flow endpoints. Examples of state management include network resource reservation, firewall configuration, and state used in active networking; examples of state monitoring are the discovery of instantaneous path properties, such as available bandwidth or cumulative queuing delay. Each of these different uses of signalling is referred to as a signalling application.

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Internet Engineering Task Force (IETF)                    H. Schulzrinne Request for Comments: 5971                                   Columbia U. Category: Experimental                                        R. Hancock ISSN: 2070-1721                                                      RMR                                                             October 2010

               GIST: General Internet Signalling Transport


   This document specifies protocol stacks for the routing and transport    of per-flow signalling messages along the path taken by that flow    through the network.  The design uses existing transport and security    protocols under a common messaging layer, the General Internet    Signalling Transport (GIST), which provides a common service for    diverse signalling applications.  GIST does not handle signalling    application state itself, but manages its own internal state and the    configuration of the underlying transport and security protocols to    enable the transfer of messages in both directions along the flow    path.  The combination of GIST and the lower layer transport and    security protocols provides a solution for the base protocol    component of the "Next Steps in Signalling" (NSIS) framework.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for examination, experimental implementation, and    evaluation.

   This document defines an Experimental Protocol for the Internet    community.  This document is a product of the Internet Engineering    Task Force (IETF).  It represents the consensus of the IETF    community.  It has received public review and has been approved for    publication by the Internet Engineering Steering Group (IESG).  Not    all documents approved by the IESG are a candidate for any level of    Internet Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

 Schulzrinne & Hancock         Experimental                      [Page 1]
 RFC 5971                          GIST                      October 2010

 Copyright Notice

   Copyright (c) 2010 IETF Trust and the persons identified as the    document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal    Provisions Relating to IETF Documents    ( in effect on the date of    publication of this document.  Please review these documents    carefully, as they des...