WO1999014899A8 - Virtual path merging in a multipoint-to-point network tunneling protocol - Google Patents

Virtual path merging in a multipoint-to-point network tunneling protocol

Info

Publication number
WO1999014899A8
WO1999014899A8 PCT/US1998/019303 US9819303W WO9914899A8 WO 1999014899 A8 WO1999014899 A8 WO 1999014899A8 US 9819303 W US9819303 W US 9819303W WO 9914899 A8 WO9914899 A8 WO 9914899A8
Authority
WO
WIPO (PCT)
Prior art keywords
switches
virtual path
pvp
core network
trunks
Prior art date
Application number
PCT/US1998/019303
Other languages
French (fr)
Other versions
WO1999014899A1 (en
Inventor
Arvind S Puntambekar
Sushil Shelly
Original Assignee
Ascend Communications 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 Ascend Communications Inc filed Critical Ascend Communications Inc
Priority to CA002303939A priority Critical patent/CA2303939A1/en
Priority to EP98946081A priority patent/EP1021890B1/en
Priority to AU93174/98A priority patent/AU9317498A/en
Priority to DE69833497T priority patent/DE69833497T2/en
Publication of WO1999014899A1 publication Critical patent/WO1999014899A1/en
Publication of WO1999014899A8 publication Critical patent/WO1999014899A8/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0478—Provisions for broadband connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5619—Network Node Interface, e.g. tandem connections, transit switching
    • H04L2012/562—Routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5619—Network Node Interface, e.g. tandem connections, transit switching
    • H04L2012/5624—Path aspects, e.g. path bundling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5629—Admission control
    • H04L2012/563—Signalling, e.g. protocols, reference model
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5638—Services, e.g. multimedia, GOS, QOS
    • H04L2012/5665—Interaction of ATM with other protocols
    • H04L2012/5667—IP over ATM

Abstract

A computer network includes frame or packet-based subnetworks connected by switches (S10, S11, S20 and S21), the switches being interconnected by high capacity trunks (T10, T11, T20 and T21) using a connection based data transfer protocol similar to Asynchronous Transfer Mode (ATM). Some of the trunks include a Permanent Virtual Path (PVP) trunk crossing an ATM core network (10), the PVP trunk including one or more bidirectional PVPs. A multipoint-to-point (MPT) protocol is used among the switches to transfer packets as groups of cells directly from 'leaf', or source, switches to 'root', or destination, switches without required significant routing-related processing during cell transmission. The switches allocate virtual path identifiers in a conserving manner such that (i) MPT paths from multiple leaf switches are merged to one path with a single virtual path identifier terminating at a root switch; (ii) on the PVP trunks, a virtual path identifier already allocated for an outgoing connection is allocated to an incoming connection ahead of any virtual path identifiers that are completely unallocated; and (iii) a range of virtual path identifiers is pre-provisioned at the core network access points, so that a switch connected to an access point allocates virtual path identifiers from the pre-provisioned range on behalf of upstream switches to extend MPTs across the core network.
PCT/US1998/019303 1997-09-18 1998-09-16 Virtual path merging in a multipoint-to-point network tunneling protocol WO1999014899A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002303939A CA2303939A1 (en) 1997-09-18 1998-09-16 Virtual path merging in a multipoint-to-point network tunneling protocol
EP98946081A EP1021890B1 (en) 1997-09-18 1998-09-16 Virtual path merging in a multipoint-to-point network tunneling protocol
AU93174/98A AU9317498A (en) 1997-09-18 1998-09-16 Virtual path merging in a multipoint-to-point network tunneling protocol
DE69833497T DE69833497T2 (en) 1997-09-18 1998-09-16 COMBINING VIRTUAL PATHS IN A MULTIPOINT-TO-POINT NETWORK TUNNEL PROTOCOL

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US5924597P 1997-09-18 1997-09-18
US60/059,245 1997-09-18
US09/074,364 1998-05-07
US09/074,364 US6097726A (en) 1997-09-18 1998-05-07 Virtual path merging in a multipoint-to-point network tunneling protocol

Publications (2)

Publication Number Publication Date
WO1999014899A1 WO1999014899A1 (en) 1999-03-25
WO1999014899A8 true WO1999014899A8 (en) 1999-07-22

Family

ID=26738543

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/019303 WO1999014899A1 (en) 1997-09-18 1998-09-16 Virtual path merging in a multipoint-to-point network tunneling protocol

Country Status (6)

Country Link
US (2) US6097726A (en)
EP (1) EP1021890B1 (en)
AU (1) AU9317498A (en)
CA (1) CA2303939A1 (en)
DE (1) DE69833497T2 (en)
WO (1) WO1999014899A1 (en)

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US6778538B2 (en) * 1998-12-30 2004-08-17 Nortel Networks Limited Virtual junctors
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US7184440B1 (en) * 2000-07-26 2007-02-27 Alcatel Canada Inc. Multi-protocol switch and method therefore
US8515959B2 (en) * 2000-11-06 2013-08-20 International Business Machines Corporation Method and apparatus for maintaining and navigating a non-hierarchical personal spatial file system
US20030028386A1 (en) * 2001-04-02 2003-02-06 Zinser Richard L. Compressed domain universal transcoder
US20030195745A1 (en) * 2001-04-02 2003-10-16 Zinser, Richard L. LPC-to-MELP transcoder
US20030013465A1 (en) * 2001-07-11 2003-01-16 Choong Philip T. System and method for pseudo-tunneling voice transmissions
GB0306536D0 (en) * 2003-03-21 2003-04-23 Marconi Comm Ltd "Paths in telecommunications networks"
US7444409B2 (en) * 2005-01-21 2008-10-28 Research In Motion Limited System and method for determining a designated connection between components of computing devices
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US20130084062A1 (en) * 2011-09-29 2013-04-04 Nec Laboratories America, Inc. Hitless protection for transmitting traffic in high-speed switching system

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Also Published As

Publication number Publication date
EP1021890A4 (en) 2001-01-10
EP1021890A1 (en) 2000-07-26
DE69833497D1 (en) 2006-04-20
EP1021890B1 (en) 2006-02-15
AU9317498A (en) 1999-04-05
DE69833497T2 (en) 2006-11-09
US6967955B1 (en) 2005-11-22
US6097726A (en) 2000-08-01
CA2303939A1 (en) 1999-03-25
WO1999014899A1 (en) 1999-03-25

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