CA2152714A1 - Method and apparatus for manipulating an atm cell - Google Patents

Method and apparatus for manipulating an atm cell

Info

Publication number
CA2152714A1
CA2152714A1 CA002152714A CA2152714A CA2152714A1 CA 2152714 A1 CA2152714 A1 CA 2152714A1 CA 002152714 A CA002152714 A CA 002152714A CA 2152714 A CA2152714 A CA 2152714A CA 2152714 A1 CA2152714 A1 CA 2152714A1
Authority
CA
Canada
Prior art keywords
atm cell
memory array
switch
atm
input ports
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
CA002152714A
Other languages
French (fr)
Other versions
CA2152714C (en
Inventor
Mahesh N. Ganmukhi
Brian L. Jordan
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.)
Ericsson AB
Original Assignee
Fore Systems 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 Fore Systems Inc filed Critical Fore Systems Inc
Publication of CA2152714A1 publication Critical patent/CA2152714A1/en
Application granted granted Critical
Publication of CA2152714C publication Critical patent/CA2152714C/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
    • H04L12/54—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
    • H04L49/10—Packet switching elements characterised by the switching fabric construction
    • H04L49/104—Asynchronous transfer mode [ATM] switching fabrics
    • H04L49/105—ATM switching elements
    • H04L49/107—ATM switching elements using shared medium
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/10—Packet switching elements characterised by the switching fabric construction
    • H04L49/104—Asynchronous transfer mode [ATM] switching fabrics
    • H04L49/105—ATM switching elements
    • H04L49/108—ATM switching elements using shared central buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/30—Peripheral units, e.g. input or output ports
    • H04L49/3081—ATM peripheral units, e.g. policing, insertion or extraction
    • 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
    • H04L2012/5678—Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management
    • H04L2012/5681—Buffer or queue management

Abstract

The present invention pertains to an apparatus for manipulating ATM cells. The apparatus comprises a memory array in which an entire ATM cell can be read or written in one read or write cycle. The apparatus is also comprised of a mechanism for reading or writing the entire ATM cell from or into the memory array. The present invention pertains to a method for switching an ATM cell. The method comprises the steps of receiving the ATM cell at a first input port of a switch from the ATM network. Then there can be the step of storing the ATM cell in one clock cycle in a memory array of the switch. Next there is the step of reading the ATM cell in the memory array in one clock cycle. Next there is the step of transferring the ATM cell from the memory array to a first output port of the switch. Next there is the step of transmitting the ATM cell from the first output port to the ATM network. The present invention pertains to a switch for an ATM cell. The switch comprises I input ports which receive ATM cells from an ATM
network, where I > 1 and is an integer. The switch is also comprised of a memory array connected to the I input ports for storing an ATM cell received by one of the I input ports in one clock cycle. The switch also comprises o output ports connected to the memory array, where O > 1 and is an integer. One of the O
output ports transmit an ATM cell which is received from the memory array to the ATM network. Additionally, the switch comprises a controller connected to the memory array, I input ports and O
output ports for controlling the storage of an ATM cell from one of the input ports into the memory array in one clock cycle. The switch can be used for normal switching operation, multicasting, demultiplexing or multiplexing.
CA002152714A 1995-01-31 1995-06-27 Method and apparatus for manipulating an atm cell Expired - Fee Related CA2152714C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/381,110 US5541918A (en) 1995-01-31 1995-01-31 Method and apparatus for manipulating an ATM cell
US381,110 1995-01-31

Publications (2)

Publication Number Publication Date
CA2152714A1 true CA2152714A1 (en) 1996-08-01
CA2152714C CA2152714C (en) 2002-01-01

Family

ID=23503702

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002152714A Expired - Fee Related CA2152714C (en) 1995-01-31 1995-06-27 Method and apparatus for manipulating an atm cell

Country Status (5)

Country Link
US (3) US5541918A (en)
EP (1) EP0725555B1 (en)
CA (1) CA2152714C (en)
DE (1) DE69637187T2 (en)
MX (1) MX9504680A (en)

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Also Published As

Publication number Publication date
JP3598335B2 (en) 2004-12-08
US7046673B2 (en) 2006-05-16
EP0725555A2 (en) 1996-08-07
US5541918A (en) 1996-07-30
MX9504680A (en) 1997-04-30
EP0725555A3 (en) 1999-05-19
DE69637187T2 (en) 2008-04-10
CA2152714C (en) 2002-01-01
DE69637187D1 (en) 2007-09-13
US20020009087A1 (en) 2002-01-24
JPH08340340A (en) 1996-12-24
EP0725555B1 (en) 2007-08-01
US6278711B1 (en) 2001-08-21

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Effective date: 20150629