CA2375397A1 - Packet processing unit - Google Patents

Packet processing unit Download PDF

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Publication number
CA2375397A1
CA2375397A1 CA002375397A CA2375397A CA2375397A1 CA 2375397 A1 CA2375397 A1 CA 2375397A1 CA 002375397 A CA002375397 A CA 002375397A CA 2375397 A CA2375397 A CA 2375397A CA 2375397 A1 CA2375397 A1 CA 2375397A1
Authority
CA
Canada
Prior art keywords
mentioned
associative data
cells
outputs
search key
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
CA002375397A
Other languages
French (fr)
Other versions
CA2375397C (en
Inventor
Teruo Kaganoi
Dai Shizume
Yasuyuki Ikegai
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Publication of CA2375397A1 publication Critical patent/CA2375397A1/en
Application granted granted Critical
Publication of CA2375397C publication Critical patent/CA2375397C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04L45/745—Address table lookup; Address filtering
    • H04L45/7453—Address table lookup; Address filtering using hashing

Abstract

A packet receiving circuit 11 splits the packet received from a transmission channel 1 into a fixed length of cells and outputs the cells, a search key extracting circuit 12 extracts a predetermined search key from the above-mentioned cells, a CAM 13 performs retrieval based on the above-mentioned search key and outputs a memory address corresponding to the search key, a matching entry address receiving and associative data address transmitting circuit 14 calculates the memory address of an associative data memory 15 based on the above--mentioned memory address and outputs the information stored in the associative data memory 15 as associative data, a search result (associative data) receiving circuit 16 receives the above-mentioned associative data and performs header--updating and destination address of the above-mentioned cells, and a packet transmitting circuit 17 outputs the above--mentioned cells in the form of a packet to a transmission channel 2.
CA 2375397 2001-07-11 2002-03-08 Packet processing unit Expired - Lifetime CA2375397C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001-210161 2001-07-11
JP2001210161A JP3489573B2 (en) 2001-07-11 2001-07-11 Packet processing device

Publications (2)

Publication Number Publication Date
CA2375397A1 true CA2375397A1 (en) 2003-01-11
CA2375397C CA2375397C (en) 2007-07-24

Family

ID=19045674

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2375397 Expired - Lifetime CA2375397C (en) 2001-07-11 2002-03-08 Packet processing unit

Country Status (4)

Country Link
US (1) US7095742B2 (en)
JP (1) JP3489573B2 (en)
CN (1) CN1396748A (en)
CA (1) CA2375397C (en)

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Also Published As

Publication number Publication date
JP2003023437A (en) 2003-01-24
US7095742B2 (en) 2006-08-22
US20030012198A1 (en) 2003-01-16
JP3489573B2 (en) 2004-01-19
CA2375397C (en) 2007-07-24
CN1396748A (en) 2003-02-12

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Effective date: 20220308