SE9903460L - Method and system for fast routing lookups - Google Patents

Method and system for fast routing lookups

Info

Publication number
SE9903460L
SE9903460L SE9903460A SE9903460A SE9903460L SE 9903460 L SE9903460 L SE 9903460L SE 9903460 A SE9903460 A SE 9903460A SE 9903460 A SE9903460 A SE 9903460A SE 9903460 L SE9903460 L SE 9903460L
Authority
SE
Sweden
Prior art keywords
pointer
hop
chunk
fast routing
routing
Prior art date
Application number
SE9903460A
Other languages
Swedish (sv)
Other versions
SE9903460D0 (en
Inventor
Mikael SUNDSTROEM
Original Assignee
Effnet Group Ab
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 Effnet Group Ab filed Critical Effnet Group Ab
Priority to SE9903460A priority Critical patent/SE9903460L/en
Publication of SE9903460D0 publication Critical patent/SE9903460D0/en
Priority to TW089119541A priority patent/TW508926B/en
Priority to PCT/SE2000/001841 priority patent/WO2001022667A1/en
Priority to AU78193/00A priority patent/AU7819300A/en
Publication of SE9903460L publication Critical patent/SE9903460L/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/64—Distributing or queueing
    • H04Q3/66—Traffic distributors
    • H04Q3/665—Circuit arrangements therefor
    • 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
    • H04L45/74—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
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13034—A/D conversion, code compression/expansion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13056—Routines, finite state machines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13097—Numbering, addressing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13141—Hunting for free outlet, circuit or channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13196—Connection circuit/link/trunk/junction, bridge, router, gateway
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13204—Protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13216—Code signals, frame structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13353—Routing table, map memory
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13389—LAN, internet

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

A system for IP routing lookup in a routing table, comprising entries of arbitrary length prefixes with associated next-hop information in a next-hop table, for determining where IP datagrams are to be forwarded, and data structure means for representing the set of dominating points in the IP address space for each prefix in the routing table, said means comprising three levels of compressed pointer arrays (CPA), each including a chunk and an array of associated pointers, wherein each pointer comprises a next hop index or a pointer to the next level of chunk.
SE9903460A 1999-09-22 1999-09-22 Method and system for fast routing lookups SE9903460L (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9903460A SE9903460L (en) 1999-09-22 1999-09-22 Method and system for fast routing lookups
TW089119541A TW508926B (en) 1999-09-22 2000-09-21 Method and system for efficient routing table compression and fast routing lookups
PCT/SE2000/001841 WO2001022667A1 (en) 1999-09-22 2000-09-22 Method and system for efficient routing table compression and fast routing lookups
AU78193/00A AU7819300A (en) 1999-09-22 2000-09-22 Method and system for efficient routing table compression and fast routing lookups

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9903460A SE9903460L (en) 1999-09-22 1999-09-22 Method and system for fast routing lookups

Publications (2)

Publication Number Publication Date
SE9903460D0 SE9903460D0 (en) 1999-09-22
SE9903460L true SE9903460L (en) 2001-03-23

Family

ID=20417140

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9903460A SE9903460L (en) 1999-09-22 1999-09-22 Method and system for fast routing lookups

Country Status (4)

Country Link
AU (1) AU7819300A (en)
SE (1) SE9903460L (en)
TW (1) TW508926B (en)
WO (1) WO2001022667A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1330190C (en) * 2001-08-14 2007-08-01 中兴通讯股份有限公司 Method for selecting route based on user' IP address route
SE521907C2 (en) * 2002-01-21 2003-12-16 Rockstorm Technologies Ab Method and system for fast IP route search to determine where an IP datagram with a given destination address should be forwarded
KR100983150B1 (en) 2005-11-14 2010-09-20 미쓰비시덴키 가부시키가이샤 Network unit and programmable controller using the same
CN101060482B (en) * 2007-03-31 2011-02-02 华为技术有限公司 A route search method and forwarding system
TWI413910B (en) * 2008-01-25 2013-11-01 Univ Nat Taiwan Data item interval indentifier lookup method and system
US9442927B2 (en) 2014-05-07 2016-09-13 Red Hat Israel, Ltd. Offline generation of compressed radix tree with key sequence skip
US9361404B2 (en) 2014-05-07 2016-06-07 Red Hat Israel, Ltd. Offline radix tree compression with key sequence skip
CN106302181B (en) * 2015-05-19 2020-06-26 中兴通讯股份有限公司 Message forwarding configuration method and device of communication equipment and message forwarding method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE511972C2 (en) * 1997-09-09 2000-01-10 Sics Swedish Inst Of Computers Lookup device and method for classifying and forwarding data packets
US6266706B1 (en) * 1997-09-15 2001-07-24 Effnet Group Ab Fast routing lookup system using complete prefix tree, bit vector, and pointers in a routing table for determining where to route IP datagrams

Also Published As

Publication number Publication date
WO2001022667A1 (en) 2001-03-29
TW508926B (en) 2002-11-01
AU7819300A (en) 2001-04-24
SE9903460D0 (en) 1999-09-22

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