CA2256698A1 - Connection aggregation in switched communications networks - Google Patents

Connection aggregation in switched communications networks

Info

Publication number
CA2256698A1
CA2256698A1 CA002256698A CA2256698A CA2256698A1 CA 2256698 A1 CA2256698 A1 CA 2256698A1 CA 002256698 A CA002256698 A CA 002256698A CA 2256698 A CA2256698 A CA 2256698A CA 2256698 A1 CA2256698 A1 CA 2256698A1
Authority
CA
Canada
Prior art keywords
egress
switch
switches
established
ingress
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
CA002256698A
Other languages
French (fr)
Other versions
CA2256698C (en
Inventor
Richard Bussiere
Jeff Cioli
William H. Haggerty
Brendan Fee
David Belser
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.)
Enterasys Networks Inc
Original Assignee
Richard Bussiere
Cabletron Systems, Inc.
Jeff Cioli
William H. Haggerty
Brendan Fee
David Belser
Enterasys Networks, Inc.
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 Richard Bussiere, Cabletron Systems, Inc., Jeff Cioli, William H. Haggerty, Brendan Fee, David Belser, Enterasys Networks, Inc. filed Critical Richard Bussiere
Publication of CA2256698A1 publication Critical patent/CA2256698A1/en
Application granted granted Critical
Publication of CA2256698C publication Critical patent/CA2256698C/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
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4604—LAN interconnection over a backbone network, e.g. Internet, Frame Relay
    • H04L12/4608—LAN interconnection over ATM networks

Abstract

A method and apparatus are provided for connection-oriented switching in a communications network wherein a pre-established path is established between a select pair of an ingress switch and an egress switch. The use of pre-established paths enables a reduction in the total number of connections required inside the switch cloud, reduces the CPU load on trunk switches, and shortens the time for connection setup. In the embodiment described, the DA/SA
fields of a MAC frame data packet are replaced with a "virtual path", which identifies the pre-established path between the ingress and egress switches. A
"virtual circuit" is provided in another field of the modified packet which specifies the out-port and out-header on the egress switch for demultiplexing the modified packet upon receipt at the egress switch. The virtual circuit is exchanged between the ingress and egress switches at connection setup. The virtual path is assumed to already be in place, and known to both switches, prior to connection setup.
CA002256698A 1996-06-03 1997-06-02 Connection aggregation in switched communications networks Expired - Fee Related CA2256698C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/657,414 1996-06-03
US08/657,414 US6151324A (en) 1996-06-03 1996-06-03 Aggregation of mac data flows through pre-established path between ingress and egress switch to reduce number of number connections
PCT/US1997/009552 WO1997047113A1 (en) 1996-06-03 1997-06-02 Connection aggregation in switched communications networks

Publications (2)

Publication Number Publication Date
CA2256698A1 true CA2256698A1 (en) 1997-12-11
CA2256698C CA2256698C (en) 2003-09-30

Family

ID=24637082

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002256698A Expired - Fee Related CA2256698C (en) 1996-06-03 1997-06-02 Connection aggregation in switched communications networks

Country Status (7)

Country Link
US (2) US6151324A (en)
EP (1) EP0903028B1 (en)
AT (1) ATE261221T1 (en)
AU (1) AU721508B2 (en)
CA (1) CA2256698C (en)
DE (1) DE69727930T2 (en)
WO (1) WO1997047113A1 (en)

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Also Published As

Publication number Publication date
US6449279B1 (en) 2002-09-10
US6151324A (en) 2000-11-21
AU721508B2 (en) 2000-07-06
DE69727930T2 (en) 2005-02-03
EP0903028A1 (en) 1999-03-24
WO1997047113A1 (en) 1997-12-11
EP0903028B1 (en) 2004-03-03
AU3154397A (en) 1998-01-05
CA2256698C (en) 2003-09-30
DE69727930D1 (en) 2004-04-08
ATE261221T1 (en) 2004-03-15

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