WO1998002998A3 - Scalable switching network - Google Patents

Scalable switching network Download PDF

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Publication number
WO1998002998A3
WO1998002998A3 PCT/US1997/013720 US9713720W WO9802998A3 WO 1998002998 A3 WO1998002998 A3 WO 1998002998A3 US 9713720 W US9713720 W US 9713720W WO 9802998 A3 WO9802998 A3 WO 9802998A3
Authority
WO
WIPO (PCT)
Prior art keywords
routers
enhanced
switching network
connectivity
internal
Prior art date
Application number
PCT/US1997/013720
Other languages
French (fr)
Other versions
WO1998002998A2 (en
Inventor
Alan Huang
Original Assignee
Alan Huang
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 Alan Huang filed Critical Alan Huang
Publication of WO1998002998A2 publication Critical patent/WO1998002998A2/en
Publication of WO1998002998A3 publication Critical patent/WO1998002998A3/en

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    • 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
    • H04L49/00—Packet switching elements
    • H04L49/15—Interconnection of switching modules
    • 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
    • H04L49/101—Packet switching elements characterised by the switching fabric construction using crossbar or matrix
    • 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
    • H04L49/25—Routing or path finding in a switch fabric
    • H04L49/253—Routing or path finding in a switch fabric using establishment or release of connections between ports
    • H04L49/254—Centralised controller, i.e. arbitration or scheduling
    • 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
    • H04L49/3018—Input queuing
    • 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
    • H04L49/3027—Output queuing

Abstract

An N input and N output, bi-directional scalable switching network (90) is implemented with an array of log base x of (N/2) rows and (N/2)/x columns of routers (40-68); where each router has 2x ports, and where the rows of routers are connected to each other via a blocking compensated cyclic group mapping interconnect (49 and 59). The routers provide destination routing. The levels of blocking compensated cyclic group mapping interconnect provide connectivity between the rows of routers. The internal connectivity of the bi-directional scalable switching network (90) can be enhanced (82 and 92) by inserting at least one additional level of mapping interconnect (69) and row of routers (70-78). The external connectivity can be enhanced by providing alternate routes to (128) and from (124) various destinations. Fault tolerance (116) can be achieved by using dynamic routing to take advantage of the enhanced internal or external connectivity to route around faults. Input load balancing (124), internal load balancing (118), output load balancing (128), delay reduction (120), and jitter reduction (122) can be achieved by having the routers load between the equivalent routes provided by the enhanced internal or external connectivity. Shared distributed output buffering can be achieved by implementing flow control between the routers (115). Remote initialization, monitoring, and updating of the scalable switching network can be achieved by assigning each router (40-78) an IP address, and accessing the routers via a computer network such as the Internet.
PCT/US1997/013720 1996-07-16 1997-07-14 Scalable switching network WO1998002998A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/680,680 US5841775A (en) 1996-07-16 1996-07-16 Scalable switching network
US08/680,680 1996-07-16

Publications (2)

Publication Number Publication Date
WO1998002998A2 WO1998002998A2 (en) 1998-01-22
WO1998002998A3 true WO1998002998A3 (en) 1998-07-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/013720 WO1998002998A2 (en) 1996-07-16 1997-07-14 Scalable switching network

Country Status (2)

Country Link
US (1) US5841775A (en)
WO (1) WO1998002998A2 (en)

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Publication number Publication date
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US5841775A (en) 1998-11-24

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