CA2330770A1 - Automatic loop segment failure isolation - Google Patents

Automatic loop segment failure isolation Download PDF

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Publication number
CA2330770A1
CA2330770A1 CA002330770A CA2330770A CA2330770A1 CA 2330770 A1 CA2330770 A1 CA 2330770A1 CA 002330770 A CA002330770 A CA 002330770A CA 2330770 A CA2330770 A CA 2330770A CA 2330770 A1 CA2330770 A1 CA 2330770A1
Authority
CA
Canada
Prior art keywords
port
hub
node
loop
hub port
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
CA002330770A
Other languages
French (fr)
Other versions
CA2330770C (en
Inventor
David Brewer
David Baldwin
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.)
Emulex Corp
Original Assignee
David Brewer
Emulex Corporation
David Baldwin
Emulex Design & Manufacturing Corporation
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 David Brewer, Emulex Corporation, David Baldwin, Emulex Design & Manufacturing Corporation filed Critical David Brewer
Publication of CA2330770A1 publication Critical patent/CA2330770A1/en
Application granted granted Critical
Publication of CA2330770C publication Critical patent/CA2330770C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H04L12/437—Ring fault isolation or reconfiguration

Abstract

A hub port (300) in a hub of a loop network which automatically bypasses a node port (314) which is generating a particular loop failure initialization sequence. The hub port contains a detection circuit which enables the hub port to detect loop failure initialization data received from its attached node port. Upon detecting such data from an attached node port, the hub port (300) replaces such data with buffer data to be passed to the next hub port. Upon detecting the completion of a loop failure initialization sequence from an attached node port, the hub port enters a bypass node. The hub port no longer passes on output from its attached node port and instead forwards along the internal hub link data received from the previous hub port in the hub loop.
The bypass is maintained until the hub port receives a primitive sequence indicating the recovery of the attached node port. The hub port periodically sends at least one recovery sequence to the node port. When the hub port receives the same recovery sequence back from the node port, the hub port ends the bypass and reinserts the node port back into the hub loop.
CA002330770A 1998-05-01 1999-04-29 Automatic loop segment failure isolation Expired - Fee Related CA2330770C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/071,288 1998-05-01
US09/071,288 US6101166A (en) 1998-05-01 1998-05-01 Automatic loop segment failure isolation
PCT/US1999/009478 WO1999057831A1 (en) 1998-05-01 1999-04-29 Automatic loop segment failure isolation

Publications (2)

Publication Number Publication Date
CA2330770A1 true CA2330770A1 (en) 1999-11-11
CA2330770C CA2330770C (en) 2003-03-18

Family

ID=22100404

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002330770A Expired - Fee Related CA2330770C (en) 1998-05-01 1999-04-29 Automatic loop segment failure isolation

Country Status (6)

Country Link
US (2) US6101166A (en)
EP (1) EP1075742A4 (en)
JP (1) JP3738825B2 (en)
KR (1) KR100394312B1 (en)
CA (1) CA2330770C (en)
WO (1) WO1999057831A1 (en)

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Also Published As

Publication number Publication date
EP1075742A4 (en) 2005-04-13
WO1999057831A1 (en) 1999-11-11
CA2330770C (en) 2003-03-18
EP1075742A1 (en) 2001-02-14
US6101166A (en) 2000-08-08
KR100394312B1 (en) 2003-08-09
US6201787B1 (en) 2001-03-13
KR20010052291A (en) 2001-06-25
JP3738825B2 (en) 2006-01-25
JP2002514837A (en) 2002-05-21

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