WO2006047223A3 - Forwarding table reduction and multipath network forwarding - Google Patents

Forwarding table reduction and multipath network forwarding Download PDF

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Publication number
WO2006047223A3
WO2006047223A3 PCT/US2005/037765 US2005037765W WO2006047223A3 WO 2006047223 A3 WO2006047223 A3 WO 2006047223A3 US 2005037765 W US2005037765 W US 2005037765W WO 2006047223 A3 WO2006047223 A3 WO 2006047223A3
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WO
WIPO (PCT)
Prior art keywords
switch
ids
network
forwarding
need
Prior art date
Application number
PCT/US2005/037765
Other languages
French (fr)
Other versions
WO2006047223A2 (en
Inventor
Lawrence Kreeger
Thomas Edsall
Elango Ganesan
Silvano Gai
Original Assignee
Cisco Tech Inc
Lawrence Kreeger
Thomas Edsall
Elango Ganesan
Silvano Gai
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 Cisco Tech Inc, Lawrence Kreeger, Thomas Edsall, Elango Ganesan, Silvano Gai filed Critical Cisco Tech Inc
Priority to CN200580034955.8A priority Critical patent/CN101129027B/en
Priority to EP17179671.7A priority patent/EP3249866B1/en
Priority to EP05810293.0A priority patent/EP1803265B1/en
Publication of WO2006047223A2 publication Critical patent/WO2006047223A2/en
Publication of WO2006047223A3 publication Critical patent/WO2006047223A3/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/66Layer 2 routing, e.g. in Ethernet based MAN's
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/48Routing tree calculation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/54Organization of routing tables
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/60Router architectures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/74Address processing for routing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00Packet switching elements
    • H04L49/35Switches specially adapted for specific applications
    • H04L49/351Switches specially adapted for specific applications for local area network [LAN], e.g. Ethernet switches
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00Packet switching elements
    • H04L49/25Routing or path finding in a switch fabric
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00Packet switching elements
    • H04L49/30Peripheral units, e.g. input or output ports
    • H04L49/3009Header conversion, routing tables or routing tags

Abstract

Increased usage of network links is provided and smaller forwarding tables are required. A combination of STP and Multipath methods may be implemented in a network. Frames may be forwarded between switches not only according to MAC addresses, but also according to switch IDs and local IDs. Switch IDs do not need to be globally unique, but should be unique within a particular network. Local IDs need only be unique within a particular switch. Some preferred implementations allow frames to be delivered in order to devices requiring in-order delivery. Preferably, core switches need only learn the switch IDs of each core switch and each edge switch, and the appropriate exit port(s) corresponding to each switch. Preferably, the forwarding tables of each edge switch indicate the addresses of each device attached to that edge switch, the address of each device that is in communication with an attached device and the address of every other switch in the network.
PCT/US2005/037765 2004-10-22 2005-10-18 Forwarding table reduction and multipath network forwarding WO2006047223A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200580034955.8A CN101129027B (en) 2004-10-22 2005-10-18 Forwarding table reduction and multipath network forwarding
EP17179671.7A EP3249866B1 (en) 2004-10-22 2005-10-18 Forwarding table reduction and multipath network forwarding
EP05810293.0A EP1803265B1 (en) 2004-10-22 2005-10-18 Forwarding table reduction and multipath network forwarding

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US62139604P 2004-10-22 2004-10-22
US60/621,396 2004-10-22
US11/152,991 US7801125B2 (en) 2004-10-22 2005-06-14 Forwarding table reduction and multipath network forwarding
US11/152,991 2005-06-14

Publications (2)

Publication Number Publication Date
WO2006047223A2 WO2006047223A2 (en) 2006-05-04
WO2006047223A3 true WO2006047223A3 (en) 2006-12-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/037765 WO2006047223A2 (en) 2004-10-22 2005-10-18 Forwarding table reduction and multipath network forwarding

Country Status (3)

Country Link
US (2) US7801125B2 (en)
EP (2) EP1803265B1 (en)
WO (1) WO2006047223A2 (en)

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