CA2184426A1 - Improved routing method in a communications network - Google Patents

Improved routing method in a communications network

Info

Publication number
CA2184426A1
CA2184426A1 CA2184426A CA2184426A CA2184426A1 CA 2184426 A1 CA2184426 A1 CA 2184426A1 CA 2184426 A CA2184426 A CA 2184426A CA 2184426 A CA2184426 A CA 2184426A CA 2184426 A1 CA2184426 A1 CA 2184426A1
Authority
CA
Canada
Prior art keywords
node
service
setup
local node
local
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2184426A
Other languages
French (fr)
Other versions
CA2184426C (en
Inventor
Matthew T. Busche
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
AT&T Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AT&T Corp filed Critical AT&T Corp
Publication of CA2184426A1 publication Critical patent/CA2184426A1/en
Application granted granted Critical
Publication of CA2184426C publication Critical patent/CA2184426C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/12—Shortest path evaluation

Abstract

A setup procedure employing distributed hop-by-hop routing reduces the number of signaling messages needed to establish a service (i.e., connection), thus enhancing network performance. A service is setup between an origination node and a destination node which are a part of a network of communication nodes interconnected by links.
Each node maintains a topological database representing the network topology. Initially, a setup message for initiating the service is transmitted from the origination node to a neighboring node that serves as a local node. The topological database is then updated after the local node receives the setup message by eliminating links connected to a particular set of nodes. This set of nodes includes those nodes other than the local node that have previously transmitted a setup or failure message for the service. A shortest path is next determined from the local node to the destination node over the updated topology and another setup message is transmitted from the local node to a firstneighboring node in the shortest path. The previously-mentioned steps are repeated, beginning with the step of updating the topological database, where the neighboring node now serves as a subsequent local node. The steps are repeated until either a setup message reaches the destination node so that the service enters a connected state or no shortest path is found at the origination node, which indicates that the service has failed to enter a connected state.
CA002184426A 1995-09-26 1996-08-29 Improved routing method in a communications network Expired - Fee Related CA2184426C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/534,151 US5805593A (en) 1995-09-26 1995-09-26 Routing method for setting up a service between an origination node and a destination node in a connection-communications network
US534,151 1995-09-26

Publications (2)

Publication Number Publication Date
CA2184426A1 true CA2184426A1 (en) 1997-03-27
CA2184426C CA2184426C (en) 1999-12-14

Family

ID=24128889

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002184426A Expired - Fee Related CA2184426C (en) 1995-09-26 1996-08-29 Improved routing method in a communications network

Country Status (5)

Country Link
US (1) US5805593A (en)
EP (1) EP0766430B1 (en)
JP (1) JP3400265B2 (en)
CA (1) CA2184426C (en)
DE (1) DE69622654D1 (en)

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WO2005069552A1 (en) * 2004-01-14 2005-07-28 Gridiron Software, Inc. Redundant pipelined file transfer

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US5805593A (en) 1998-09-08
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EP0766430A2 (en) 1997-04-02
CA2184426C (en) 1999-12-14
JPH09139736A (en) 1997-05-27
EP0766430A3 (en) 2000-05-24
EP0766430B1 (en) 2002-07-31

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