GB2363031A - Internet protocol switch and method - Google Patents

Internet protocol switch and method

Info

Publication number
GB2363031A
GB2363031A GB0121292A GB0121292A GB2363031A GB 2363031 A GB2363031 A GB 2363031A GB 0121292 A GB0121292 A GB 0121292A GB 0121292 A GB0121292 A GB 0121292A GB 2363031 A GB2363031 A GB 2363031A
Authority
GB
United Kingdom
Prior art keywords
cut
controller
default
input
output
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.)
Withdrawn
Application number
GB0121292A
Other versions
GB0121292D0 (en
Inventor
Timo Soirinsuo
Pasi Vaananen
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.)
Nokia Oyj
Original Assignee
Nokia Networks Oy
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 Nokia Networks Oy filed Critical Nokia Networks Oy
Publication of GB0121292D0 publication Critical patent/GB0121292D0/en
Publication of GB2363031A publication Critical patent/GB2363031A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/25—Routing or path finding in a switch fabric
    • H04L49/251—Cut-through or wormhole 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/35—Switches specially adapted for specific applications
    • H04L49/351—Switches specially adapted for specific applications for local area network [LAN], e.g. Ethernet switches
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/60—Software-defined switches
    • H04L49/602—Multilayer or multiprotocol switching, e.g. IP switching

Abstract

A switch and switching method is disclosed. The switch provides default cut-throughs having the characteristics of both default channels and cut-throughs without internodal signaling for flow establishment. The switch includes switch hardware for interfacing a plurality of input ports to a plurality of output ports, a controller for controlling the forwarding of packets received on the input ports from a transmitting node to the output ports, and input default cut-through mapping an input port to the controller and an output default cut-through mapping the controller to an output port leading to a next hop for the packets. The controller determines whether a first packet meets predetermined flow establishment criteria and assigns the output default cut-through to the input default cut-through to bypass the controller to establish a cut-through connection in response to the first packet meeting the flow establishment criteria. The controller may also map a plurality of flows to the cut-through connection. A first timer is used for timing the period since the transmission of the packet. The first timer is restarted after each packet has been sent. A second timer is used for measuring the period since the assignement of the output default cut-through to the input default cut-through. Permanent cut-throughs may be used to map an input port to an output port for shortlived traffic. A third timer may be provided for controlling the duration of permanent cut-throughs. The controller may also route packets to a next hop on the basis of an IP layer header. An adjacency protocol is used to exchange configuration information between adjacent nodes and advertise available default cut-throughs.
GB0121292A 1999-03-17 1999-03-17 Internet protocol switch and method Withdrawn GB2363031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI1999/000197 WO2000056113A1 (en) 1999-03-17 1999-03-17 Internet protocol switch and method

Publications (2)

Publication Number Publication Date
GB0121292D0 GB0121292D0 (en) 2001-10-24
GB2363031A true GB2363031A (en) 2001-12-05

Family

ID=8556739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0121292A Withdrawn GB2363031A (en) 1999-03-17 1999-03-17 Internet protocol switch and method

Country Status (3)

Country Link
AU (1) AU2936099A (en)
GB (1) GB2363031A (en)
WO (1) WO2000056113A1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7430171B2 (en) 1998-11-19 2008-09-30 Broadcom Corporation Fibre channel arbitrated loop bufferless switch circuitry to increase bandwidth without significant increase in cost
US7239636B2 (en) 2001-07-23 2007-07-03 Broadcom Corporation Multiple virtual channels for use in network devices
TWI380633B (en) * 2003-10-15 2012-12-21 Qualcomm Inc Method, apparatus, and system for multiplexing protocol data units
US8462817B2 (en) 2003-10-15 2013-06-11 Qualcomm Incorporated Method, apparatus, and system for multiplexing protocol data units
US9226308B2 (en) 2003-10-15 2015-12-29 Qualcomm Incorporated Method, apparatus, and system for medium access control
US8472473B2 (en) * 2003-10-15 2013-06-25 Qualcomm Incorporated Wireless LAN protocol stack
US8483105B2 (en) 2003-10-15 2013-07-09 Qualcomm Incorporated High speed media access control
US8842657B2 (en) 2003-10-15 2014-09-23 Qualcomm Incorporated High speed media access control with legacy system interoperability
US8233462B2 (en) 2003-10-15 2012-07-31 Qualcomm Incorporated High speed media access control and direct link protocol
US7818018B2 (en) 2004-01-29 2010-10-19 Qualcomm Incorporated Distributed hierarchical scheduling in an AD hoc network
US8903440B2 (en) 2004-01-29 2014-12-02 Qualcomm Incorporated Distributed hierarchical scheduling in an ad hoc network
US8315271B2 (en) 2004-03-26 2012-11-20 Qualcomm Incorporated Method and apparatus for an ad-hoc wireless communications system
US7564814B2 (en) 2004-05-07 2009-07-21 Qualcomm, Incorporated Transmission mode and rate selection for a wireless communication system
US8401018B2 (en) 2004-06-02 2013-03-19 Qualcomm Incorporated Method and apparatus for scheduling in a wireless network
US7882412B2 (en) 2004-10-05 2011-02-01 Sanjiv Nanda Enhanced block acknowledgement
US7698744B2 (en) 2004-12-03 2010-04-13 Whitecell Software Inc. Secure system for allowing the execution of authorized computer program code
US8600336B2 (en) 2005-09-12 2013-12-03 Qualcomm Incorporated Scheduling with reverse direction grant in wireless communication systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997028505A1 (en) * 1996-01-31 1997-08-07 Ipsilon Networks, Inc. Improved method and apparatus for dynamically shifting between routing and switching packets in a transmission network
EP0869695A1 (en) * 1997-04-04 1998-10-07 Lucent Technologies Inc. System for routing packet switched traffic
EP0880298A2 (en) * 1997-05-19 1998-11-25 Hitachi, Ltd. Packet switching system, network and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997028505A1 (en) * 1996-01-31 1997-08-07 Ipsilon Networks, Inc. Improved method and apparatus for dynamically shifting between routing and switching packets in a transmission network
EP0869695A1 (en) * 1997-04-04 1998-10-07 Lucent Technologies Inc. System for routing packet switched traffic
EP0880298A2 (en) * 1997-05-19 1998-11-25 Hitachi, Ltd. Packet switching system, network and method

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
1997, "IP Switching an Gigabit Routers". P.Newman et al. seepage 65, right column, second paragraph- *
et al. Chapter 5-6, page 1255-page 1260. IEEE Communications Magazine, January *
page 65. *
Proc. IEEE Infocom, March 1996 "Flow Labelled IP:a connectionless Approach to ATM".P.Newman *

Also Published As

Publication number Publication date
AU2936099A (en) 2000-10-04
GB0121292D0 (en) 2001-10-24
WO2000056113A1 (en) 2000-09-21

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)