WO1999013619A3 - A lookup device and a method for classification and forwarding of packets - Google Patents

A lookup device and a method for classification and forwarding of packets Download PDF

Info

Publication number
WO1999013619A3
WO1999013619A3 PCT/SE1998/001584 SE9801584W WO9913619A3 WO 1999013619 A3 WO1999013619 A3 WO 1999013619A3 SE 9801584 W SE9801584 W SE 9801584W WO 9913619 A3 WO9913619 A3 WO 9913619A3
Authority
WO
WIPO (PCT)
Prior art keywords
lookup device
forwarding
packets
classification
memory means
Prior art date
Application number
PCT/SE1998/001584
Other languages
French (fr)
Other versions
WO1999013619A2 (en
Inventor
Peter Sjoedin
Andreas Moestedt
Original Assignee
Sics Swedish Inst Of Computer
Peter Sjoedin
Andreas Moestedt
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 Sics Swedish Inst Of Computer, Peter Sjoedin, Andreas Moestedt filed Critical Sics Swedish Inst Of Computer
Priority to EP98943155A priority Critical patent/EP1025678A2/en
Priority to AU91008/98A priority patent/AU9100898A/en
Priority to CA002302744A priority patent/CA2302744A1/en
Publication of WO1999013619A2 publication Critical patent/WO1999013619A2/en
Publication of WO1999013619A3 publication Critical patent/WO1999013619A3/en

Links

Classifications

    • 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
    • H04L45/742—Route cache; Operation thereof

Abstract

The present invention relates to a lookup device (30) and a method for classification and forwarding of packets. The lookup device (30) comprises i stages (321, 322, 323, 324) wherein each stage (321, 322, 323, 324) represents a predetermined prefix length, and a prefix represents a group of addresses. The lookup device (30) also comprises a routing memory means (34) connected to said i:th stage (324), wherein each stage (321, 322, 323, 324) comprises a memory means (361, 362, 363, 364) for storing a table of entries, wherein each entry comprises a pointer field which either comprises a pointer to the memory means in the next stage, or a pointer to the routing memory means (34) storing the forwarding information.
PCT/SE1998/001584 1997-09-09 1998-09-07 A lookup device and a method for classification and forwarding of packets WO1999013619A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98943155A EP1025678A2 (en) 1997-09-09 1998-09-07 A lookup device and a method for classification and forwarding of packets
AU91008/98A AU9100898A (en) 1997-09-09 1998-09-07 A lookup device and a method for classification and forwarding of packets
CA002302744A CA2302744A1 (en) 1997-09-09 1998-09-07 A lookup device and a method for classification and forwarding of packets

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9703292-4 1997-09-09
SE9703292A SE511972C2 (en) 1997-09-09 1997-09-09 Lookup device and method for classifying and forwarding data packets

Publications (2)

Publication Number Publication Date
WO1999013619A2 WO1999013619A2 (en) 1999-03-18
WO1999013619A3 true WO1999013619A3 (en) 1999-06-03

Family

ID=20408224

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1998/001584 WO1999013619A2 (en) 1997-09-09 1998-09-07 A lookup device and a method for classification and forwarding of packets

Country Status (5)

Country Link
EP (1) EP1025678A2 (en)
AU (1) AU9100898A (en)
CA (1) CA2302744A1 (en)
SE (1) SE511972C2 (en)
WO (1) WO1999013619A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6975631B1 (en) * 1998-06-19 2005-12-13 Juniper Networks, Inc. Network packet forwarding lookup with a reduced number of memory accesses
GB9912129D0 (en) 1999-05-26 1999-07-28 3Com Corp Communication device with forwarding database having having a trie search facility
SE9903460L (en) * 1999-09-22 2001-03-23 Effnet Group Ab Method and system for fast routing lookups
US6799202B1 (en) * 1999-12-16 2004-09-28 Hachiro Kawaii Federated operating system for a server
GB2359693B (en) * 2000-02-26 2003-07-16 3Com Corp Network switch with truncated trie look-up facility
WO2001086433A1 (en) * 2000-05-11 2001-11-15 Solidum Systems Corp. Packet classification state machine
JP2001326679A (en) 2000-05-15 2001-11-22 Fujitsu Ltd Information unit, table retrieval device, table retrieval method, and recording medium
US7966421B2 (en) 2000-06-21 2011-06-21 SAtech Group, A.B. Limited Liability Company Method and apparatus for logically expanding the length of a search key
US6917954B2 (en) * 2001-05-30 2005-07-12 Mosaid Technologies, Inc. Load balancing in IP address lookup
GB2378622A (en) 2001-08-11 2003-02-12 Zarlink Semiconductor Ltd Updating a lookup table used in mapping between TDM channels and packets
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5206856A (en) * 1989-12-27 1993-04-27 Bell Communications Research, Inc. Routing of network traffic
EP0563572A2 (en) * 1992-03-27 1993-10-06 Motorola, Inc. Dynamic signal routing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5206856A (en) * 1989-12-27 1993-04-27 Bell Communications Research, Inc. Routing of network traffic
EP0563572A2 (en) * 1992-03-27 1993-10-06 Motorola, Inc. Dynamic signal routing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE/ACM TRANSACTIONS ON NETWORKING, Volume 4, No. 2, April 1996, GIRISH P. CHANDRANMENON et al., "Trading Packet Headers for Packet Processing", pages 141-152. *

Also Published As

Publication number Publication date
WO1999013619A2 (en) 1999-03-18
AU9100898A (en) 1999-03-29
SE511972C2 (en) 2000-01-10
SE9703292L (en) 1999-03-10
SE9703292D0 (en) 1997-09-09
CA2302744A1 (en) 1999-03-18
EP1025678A2 (en) 2000-08-09

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