JPS6418333A - Address filter system - Google Patents

Address filter system

Info

Publication number
JPS6418333A
JPS6418333A JP62173803A JP17380387A JPS6418333A JP S6418333 A JPS6418333 A JP S6418333A JP 62173803 A JP62173803 A JP 62173803A JP 17380387 A JP17380387 A JP 17380387A JP S6418333 A JPS6418333 A JP S6418333A
Authority
JP
Japan
Prior art keywords
address
compared
packet
lan
read out
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.)
Pending
Application number
JP62173803A
Other languages
Japanese (ja)
Inventor
Masahiro Mochizuki
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
Priority to JP62173803A priority Critical patent/JPS6418333A/en
Publication of JPS6418333A publication Critical patent/JPS6418333A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To decrease the packet passing time of a bridge device by arranging addresses in the descending order in generating a sender address table so as to decide coincidence/dissidence in a few number of times at address retrieval. CONSTITUTION:A bridge device 30 always monitors a sender address SA of a packet generated in an LAN 10 and stores it in an SA table 32 in detecting the address SA. In this case, the address is compared with the address stored already in the quantity and the result is arranged in the ascending order. In detecting a destination address DA generated in the LAN 10, the addresses SA and DA in the table 32 are compared in the table 32 and when they are coincident, the packet is aborted and when they are dissident, the packet is passed through the LAN 20. In this comparison, the address of the 1/2 division point (the N/2-th) of the entire area (N sets) stored is read out and they are compared. In case of SA(N/2-th)<DA, the address of {N/2-(N/2)/2}-th is read out and compared. The operation above is repeated. The number of times of repetition K is expressed as a logarithms of N using 2 as its base.
JP62173803A 1987-07-14 1987-07-14 Address filter system Pending JPS6418333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62173803A JPS6418333A (en) 1987-07-14 1987-07-14 Address filter system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62173803A JPS6418333A (en) 1987-07-14 1987-07-14 Address filter system

Publications (1)

Publication Number Publication Date
JPS6418333A true JPS6418333A (en) 1989-01-23

Family

ID=15967449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62173803A Pending JPS6418333A (en) 1987-07-14 1987-07-14 Address filter system

Country Status (1)

Country Link
JP (1) JPS6418333A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02190048A (en) * 1989-01-18 1990-07-26 Nec Corp Address filter
JPH04273735A (en) * 1991-02-28 1992-09-29 Nec Corp Local area network bridge device
JPH04298137A (en) * 1991-03-27 1992-10-21 Tokyo Electric Co Ltd Communication controller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02190048A (en) * 1989-01-18 1990-07-26 Nec Corp Address filter
JPH04273735A (en) * 1991-02-28 1992-09-29 Nec Corp Local area network bridge device
JPH04298137A (en) * 1991-03-27 1992-10-21 Tokyo Electric Co Ltd Communication controller

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