CA2274966A1 - High speed switching device - Google Patents

High speed switching device Download PDF

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Publication number
CA2274966A1
CA2274966A1 CA002274966A CA2274966A CA2274966A1 CA 2274966 A1 CA2274966 A1 CA 2274966A1 CA 002274966 A CA002274966 A CA 002274966A CA 2274966 A CA2274966 A CA 2274966A CA 2274966 A1 CA2274966 A1 CA 2274966A1
Authority
CA
Canada
Prior art keywords
data packet
memory
high speed
switching device
router
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
CA002274966A
Other languages
French (fr)
Other versions
CA2274966C (en
Inventor
Pradeep S. Sindhu
Ramalingam K. Anand
Dennis C. Ferguson
Bjorn O. Liencres
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.)
Juniper Networks Inc
Original Assignee
Juniper Networks
Pradeep S. Sindhu
Ramalingam K. Anand
Dennis C. Ferguson
Bjorn O. Liencres
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
Priority claimed from US08/767,576 external-priority patent/US5909440A/en
Priority claimed from US08/844,171 external-priority patent/US5905725A/en
Application filed by Juniper Networks, Pradeep S. Sindhu, Ramalingam K. Anand, Dennis C. Ferguson, Bjorn O. Liencres filed Critical Juniper Networks
Publication of CA2274966A1 publication Critical patent/CA2274966A1/en
Application granted granted Critical
Publication of CA2274966C publication Critical patent/CA2274966C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • G06F15/163—Interprocessor communication
    • G06F15/167—Interprocessor communication using a common memory, e.g. mailbox
    • 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
    • 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
    • H04L45/72—Routing based on the source address
    • 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
    • H04L45/74—Address processing for routing
    • H04L45/745—Address table lookup; Address filtering
    • H04L45/74591—Address table lookup; Address filtering using content-addressable memories [CAM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H04L47/62—Queue scheduling characterised by scheduling criteria
    • H04L47/622—Queue service order
    • H04L47/6225—Fixed service order, e.g. Round Robin
    • 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
    • H04L49/15—Interconnection of switching modules
    • H04L49/1515—Non-blocking multistage, e.g. Clos
    • H04L49/153—ATM switching fabrics having parallel switch planes
    • H04L49/1538—Cell slicing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/20—Support for services
    • H04L49/201—Multicast operation; Broadcast operation
    • H04L49/203—ATM switching fabrics with multicast or broadcast capabilities
    • 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
    • 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
    • H04L49/3072—Packet splitting
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/60—Software-defined switches
    • H04L49/608—ATM switches adapted to switch variable length packets, e.g. IP packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/901—Buffering arrangements using storage descriptor, e.g. read or write pointers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9042—Separate storage for different parts of the packet, e.g. header and payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9047—Buffering arrangements including multiple buffers, e.g. buffer pools
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9057—Arrangements for supporting packet reassembly or resequencing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • 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
    • H04L2012/5638—Services, e.g. multimedia, GOS, QOS
    • H04L2012/5646—Cell characteristics, e.g. loss, delay, jitter, sequence integrity
    • H04L2012/5652—Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly
    • 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
    • H04L2012/5679—Arbitration or scheduling
    • 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
    • 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
    • H04L49/103—Packet switching elements characterised by the switching fabric construction using a shared central buffer; using a shared memory
    • 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
    • H04L49/252—Store and forward routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers

Abstract

A router (20) for switching a data packet between a source (10) and destination (30) in a network including a plurality of input ports each including a data handler. The data handler divides a data packet into one or more fixed length cells. The router (20) includes a plurality of output ports at least one of which is for routing the data packet to the destination (30) and a memory divided into a plurality of memory banks. An input switch receives fixed length cells from the input ports and writes a single output switch routes cells received from the memory to an appropriate output port.
CA002274966A 1996-12-16 1997-12-16 High speed switching device Expired - Fee Related CA2274966C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US08/767,576 1996-12-16
US08/767,576 US5909440A (en) 1996-12-16 1996-12-16 High speed variable length best match look-up in a switching device
US08/844,171 1997-04-18
US08/844,171 US5905725A (en) 1996-12-16 1997-04-18 High speed switching device
US08/901,061 1997-07-24
US08/901,061 US6493347B2 (en) 1996-12-16 1997-07-24 Memory organization in a switching device
PCT/US1997/023285 WO1998027660A2 (en) 1996-12-16 1997-12-16 High speed switching device

Publications (2)

Publication Number Publication Date
CA2274966A1 true CA2274966A1 (en) 1998-06-25
CA2274966C CA2274966C (en) 2003-10-28

Family

ID=27419639

Family Applications (3)

Application Number Title Priority Date Filing Date
CA002274962A Expired - Fee Related CA2274962C (en) 1996-12-16 1997-12-16 High speed variable length best match look-up in a switching device
CA002274964A Expired - Fee Related CA2274964C (en) 1996-12-16 1997-12-16 Memory organization in a switching device
CA002274966A Expired - Fee Related CA2274966C (en) 1996-12-16 1997-12-16 High speed switching device

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CA002274962A Expired - Fee Related CA2274962C (en) 1996-12-16 1997-12-16 High speed variable length best match look-up in a switching device
CA002274964A Expired - Fee Related CA2274964C (en) 1996-12-16 1997-12-16 Memory organization in a switching device

Country Status (6)

Country Link
US (11) US6493347B2 (en)
EP (3) EP0947078B1 (en)
JP (3) JP3453148B2 (en)
CA (3) CA2274962C (en)
DE (2) DE69737361T2 (en)
WO (3) WO1998027662A2 (en)

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US7489699B2 (en) 2009-02-10
CA2274966C (en) 2003-10-28
US20140181235A1 (en) 2014-06-26
CA2274964C (en) 2003-08-19
CA2274964A1 (en) 1998-06-25
JP2000516423A (en) 2000-12-05
EP0947078B1 (en) 2007-02-14
US6493347B2 (en) 2002-12-10
JP2000516424A (en) 2000-12-05
JP3453148B2 (en) 2003-10-06
US20030108056A1 (en) 2003-06-12
WO1998027662A2 (en) 1998-06-25
US8189605B2 (en) 2012-05-29
EP0940025A1 (en) 1999-09-08
EP0947078A4 (en) 2001-08-29
US20090268740A1 (en) 2009-10-29
WO1998027697A1 (en) 1998-06-25
US20090109975A1 (en) 2009-04-30
US20050201396A1 (en) 2005-09-15
US20110164618A1 (en) 2011-07-07
US20120219001A1 (en) 2012-08-30
EP0940025A4 (en) 2001-08-29
US8761180B2 (en) 2014-06-24
CA2274962A1 (en) 1998-06-25
EP0948849A2 (en) 1999-10-13
DE69737361D1 (en) 2007-03-29
US8477784B2 (en) 2013-07-02
US9411776B2 (en) 2016-08-09
US7903659B2 (en) 2011-03-08
US6917620B1 (en) 2005-07-12
CA2274962C (en) 2002-08-06
WO1998027662A3 (en) 1998-09-03
JP3459653B2 (en) 2003-10-20
JP3459652B2 (en) 2003-10-20
US8681796B2 (en) 2014-03-25
DE69737357T2 (en) 2007-06-21

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