CA2519341A1 - Method and system for emulating a fibre channel link over a sonet/sdh path - Google Patents
Method and system for emulating a fibre channel link over a sonet/sdh path Download PDFInfo
- Publication number
- CA2519341A1 CA2519341A1 CA002519341A CA2519341A CA2519341A1 CA 2519341 A1 CA2519341 A1 CA 2519341A1 CA 002519341 A CA002519341 A CA 002519341A CA 2519341 A CA2519341 A CA 2519341A CA 2519341 A1 CA2519341 A1 CA 2519341A1
- Authority
- CA
- Canada
- Prior art keywords
- fibre channel
- link
- sonet
- remote
- sdh
- 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
Links
- 239000000835 fiber Substances 0.000 title claims abstract 112
- RGNPBRKPHBKNKX-UHFFFAOYSA-N hexaflumuron Chemical compound C1=C(Cl)C(OC(F)(F)C(F)F)=C(Cl)C=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F RGNPBRKPHBKNKX-UHFFFAOYSA-N 0.000 title claims abstract 37
- 230000001052 transient effect Effects 0.000 claims abstract 5
- 230000005540 biological transmission Effects 0.000 claims 5
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1611—Synchronous digital hierarchy [SDH] or SONET
- H04J3/1617—Synchronous digital hierarchy [SDH] or SONET carrying packets or ATM cells
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0057—Operations, administration and maintenance [OAM]
- H04J2203/006—Fault tolerance and recovery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0073—Services, e.g. multimedia, GOS, QOS
- H04J2203/0082—Interaction of SDH with non-ATM protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/14—Monitoring arrangements
Abstract
A method and system for emulating a Fibre Channel link over a SONET transport path to provide link integrity is disclosed. Techniques to handle link failures from a Fibre Channel element to its associated Fibre Channel port (28) or of the SONET/SDH network linking Fibre Channel ports (28) are described. Timing the length of failures and return of operation of the failed links is used to handle transient conditions and to avoid link bouncing.
Claims (29)
1. A method for emulating a Fibre Channel link over a SONET transport path and providing link integrity, the method comprising:
detecting a failure of a Fibre Channel link from a local Fibre Channel port to an associated local Fibre Channel transport interface;
timing the failure of the Fibre Channel link from the Fibre Channel port to its associated local Fibre Channel transport interface to determine that the failure is nontransient;
generating error condition codes; and transmitting the error condition codes over a SONET/SDH transport path overhead to a remote Fibre Channel transport interface so that the Fibre Channel link from the remote Fibre Channel transport interface to an associated remote Fibre Channel port is disabled after a predetermined amount of time.
detecting a failure of a Fibre Channel link from a local Fibre Channel port to an associated local Fibre Channel transport interface;
timing the failure of the Fibre Channel link from the Fibre Channel port to its associated local Fibre Channel transport interface to determine that the failure is nontransient;
generating error condition codes; and transmitting the error condition codes over a SONET/SDH transport path overhead to a remote Fibre Channel transport interface so that the Fibre Channel link from the remote Fibre Channel transport interface to an associated remote Fibre Channel port is disabled after a predetermined amount of time.
2. The method of claim 1 further comprising determining a return into operation of the Fibre Channel link from the local Fibre Channel port to the local Fibre Channel transport interface;
timing the return into operation of the Fibre Channel link from the local Fibre Channel port to the local Fibre Channel transport interface to determine that the return is nontransient; and removing the error condition code in the SONET/SDH path overhead transmission to the remote Fibre Channel transport interface to enable the remote Fibre Channel port link.
timing the return into operation of the Fibre Channel link from the local Fibre Channel port to the local Fibre Channel transport interface to determine that the return is nontransient; and removing the error condition code in the SONET/SDH path overhead transmission to the remote Fibre Channel transport interface to enable the remote Fibre Channel port link.
3. The method of claim 2 wherein the error condition code removing step includes transmitting a valid code to the remote Fibre Channel transport interface.
4. A method for emulating a Fibre Channel link over a SONET/SDH
transport path and providing link stability, the method comprising:
detecting a SONET/SDH transport path failure;
timing the SONET/SDH transport path failure to determine that the failure is nontransient; and disabling a local Fibre Channel port link upon a determination that the failure is nontransient;
wherein inadvertent disabling of the local Fibre Channel port link due to transient SONET/SDH error conditions is avoided.
transport path and providing link stability, the method comprising:
detecting a SONET/SDH transport path failure;
timing the SONET/SDH transport path failure to determine that the failure is nontransient; and disabling a local Fibre Channel port link upon a determination that the failure is nontransient;
wherein inadvertent disabling of the local Fibre Channel port link due to transient SONET/SDH error conditions is avoided.
5. The method of claim 4 wherein the disabling step comprises preventing the local Fibre Channel port from receiving data from the local Fibre Channel transport interface.
6. The method of claim 5 further comprising disabling a local Fibre Channel transport interface transmit laser to the local Fibre Channel port after a predetermined amount of time.
7. The method of claim 4 further comprising detecting a return into operation of the SONET/SDH transport path;
timing the return into operation of the SONET/SDH transport path failure to determine that the return is nontransient; and enabling the local Fibre Channel port link to avoid inadvertent enabling of the local Fibre Channel port link due to transient SONET/SDH error conditions.
timing the return into operation of the SONET/SDH transport path failure to determine that the return is nontransient; and enabling the local Fibre Channel port link to avoid inadvertent enabling of the local Fibre Channel port link due to transient SONET/SDH error conditions.
8. The method of claim 4 further comprising sending an error condition code in a SONET/SDH path overhead to a remote Fibre Channel transport interface to disable a remote Fibre Channel port link to emulate a Fibre Channel link from the Fibre Channel port associated with the local Fibre Channel transport interface to the Fibre Channel port associated with the remote Fibre Channel transport interface.
9. The method of claim 8 wherein the remote Fibre Channel port link is disabled by preventing the remote Fibre Channel port from receiving data from the remote Fibre Channel transport interface.
10. The method of claim 9 further comprising disabling a remote Fibre Channel transport interface transmit laser to the remote Fibre Channel port after a predetermined amount of time.
11. The method of claim 8 further comprising receiving character words from the Fibre Channel port associated with the remote Fibre Channel transport interface to indicate that the remote Fibre Channel port link is disabled.
12. The method of claim 8 further comprising detecting a return into operation of the SONET/SDH transport path;
timing the return into operation of the SONET/SDH transport path failure to determine that the return is nontransient; and removing the error condition code in the SONET/SDH path overhead transmission to the remote Fibre Channel transport interface to enable the remote Fibre Channel port link.
timing the return into operation of the SONET/SDH transport path failure to determine that the return is nontransient; and removing the error condition code in the SONET/SDH path overhead transmission to the remote Fibre Channel transport interface to enable the remote Fibre Channel port link.
13. The method of claim 12 wherein the error condition code removing step includes transmitting a valid code to the remote Fibre Channel transport interface.
14. A system for emulating a Fibre Channel link over a SONET/SDH
transport path, the system comprising:
at least one integrated circuit to detect a failure on a Fibre Channel link from a Fibre Channel port to an associated Fibre Channel transport interface, to generate a special GFP-encapsulated frame upon detecting the failure, and to transmit the special GFP-encapsulated frame over the SONET/SDH transport path to a remote Fibre Channel transport interface to disable a Fibre Channel link from the remote Fibre Channel transport interface to a remote Fibre Channel port; and at least one processor configured to time the failure of the Fibre Channel link from the local Fibre Channel port to the local Fibre Channel transport interface to determine that the failure is nontransient; and responsive to a determination that the failure is nontransient, to transmit an error condition code in a SONET/SDH path overhead to the remote Fibre Channel transport interface to disable the remote Fibre Channel port link;
whereby a Fibre Channel link from the Fibre Channel port associated with the local Fibre Channel transport interface to the Fibre Channel port associated with the remote Fibre Channel transport interface is emulated.
transport path, the system comprising:
at least one integrated circuit to detect a failure on a Fibre Channel link from a Fibre Channel port to an associated Fibre Channel transport interface, to generate a special GFP-encapsulated frame upon detecting the failure, and to transmit the special GFP-encapsulated frame over the SONET/SDH transport path to a remote Fibre Channel transport interface to disable a Fibre Channel link from the remote Fibre Channel transport interface to a remote Fibre Channel port; and at least one processor configured to time the failure of the Fibre Channel link from the local Fibre Channel port to the local Fibre Channel transport interface to determine that the failure is nontransient; and responsive to a determination that the failure is nontransient, to transmit an error condition code in a SONET/SDH path overhead to the remote Fibre Channel transport interface to disable the remote Fibre Channel port link;
whereby a Fibre Channel link from the Fibre Channel port associated with the local Fibre Channel transport interface to the Fibre Channel port associated with the remote Fibre Channel transport interface is emulated.
15. The system of claim 14 further comprising at least one memory subsystem and wherein the processor is configured by software code stored in the memory subsystem.
16. The system of claim 14 wherein the at least one integrated circuit is selected from a group comprising ASICs and FPGAs.
17. The system of claim 14 wherein the at least one processor is further configured to remove the error condition code in the SONET/SDH path overhead transmission to the remote Fibre Channel port to enable the Fibre Channel link from the remote Fibre Channel transport interface to the remote Fibre Channel port.
18. A system for emulating a Fibre Channel link over a SONET/SDH
transport path, the system comprising:
at least one processor configured to detect a failure of the SONET/SDH
transport path, to time the failure of the SONET/SDH transport path to determine that the failure is nontransient; and responsive to a determination that the failure is nontransient, to disable a Fibre Channel link from a local transport interface to its associate Fibre Channel port.
transport path, the system comprising:
at least one processor configured to detect a failure of the SONET/SDH
transport path, to time the failure of the SONET/SDH transport path to determine that the failure is nontransient; and responsive to a determination that the failure is nontransient, to disable a Fibre Channel link from a local transport interface to its associate Fibre Channel port.
19. The system of claim 18 wherein the at least one processor is further configured to transmit an error condition code in a SONET/SDH path overhead to a remote Fibre Channel transport interface to disable a Fibre Channel link from the remote Fibre Channel transport interface to its associated Fibre Channel port.
20. The system of claim 19 wherein the at least one processor is further configured to disable a Fibre Channel link by preventing a Fibre Channel port from receiving data from its associated Fibre Channel transport interface.
21. The system of claim 20 wherein the at least one processor is further configured to disable the Fibre Channel link by disabling an associated Fibre Channel transport interface transmit laser to the Fibre Channel port.
22. The system of claim 18 wherein the at least one processor is further configured to detect a return into operation of the SONET transport path and to time the return to determine that the return is nontransient, and to enable the Fibre Channel link responsive to a determination that the return is nontransient.
23. The system of claim 18 further comprising at least one memory subsystem and wherein the processor is configured by software code stored in the memory subsystem.
24. The system of claim 19 wherein the at least one processor is further configured to detect a return into operation of the SONET/SDH transport path and to time the return to determine that the return is nontransient, and to remove the error condition code in the SONET/SDH path overhead transmission to the remote Fibre Channel transport interface to enable the Fibre Channel link from the remote Fibre Channel transport interface to the remote Fibre Channel port.
25. A system for emulating a Fibre Channel link over a SONET/SDH
transport path and providing link stability, the method comprising:
means for detecting a SONET/SDH transport path failure;
means for timing the SONET/SDH transport path failure to determine that the failure is nontransient; and means for disabling a Fibre Channel port link from a local Fibre Channel port to an associated Fibre Channel transport interface upon a determination that failure is nontransient;
wherein inadvertent disabling of the local Fibre Channel link due to transient SONET/SDH error conditions is avoided.
transport path and providing link stability, the method comprising:
means for detecting a SONET/SDH transport path failure;
means for timing the SONET/SDH transport path failure to determine that the failure is nontransient; and means for disabling a Fibre Channel port link from a local Fibre Channel port to an associated Fibre Channel transport interface upon a determination that failure is nontransient;
wherein inadvertent disabling of the local Fibre Channel link due to transient SONET/SDH error conditions is avoided.
26. The system of claim 25 further comprising means for detecting a return into operation of the SONET/SDH transport path and enabling the Fibre Channel link.
27. The system of claim 26 further comprising means for timing the return into operation of the SONET/SDH transport path failure to determine that the return is nontransient to avoid inadvertent enabling of the Fibre Channel link due to transient SONET/SDH error conditions.
28. The system of claim 25 further comprising means for sending an error condition code in a SONET/SDH path overhead to a remote Fibre Channel transport interface to disable the Fibre Channel link from the Fibre Channel transport interface to an associated Fibre Channel port to emulate a Fibre Channel link from the Fibre Channel port associated with the local Fibre Channel transport interface to the Fibre Channel port associated with the remote Fibre Channel transport interface.
29. The system of claim 28 further comprising means for removing the error condition code in the SONET/SDH path overhead transmission to the remote Fibre Channel transport interface to enable the Fibre Channel port link from the remote Fibre Channel transport interface to the remote Fibre Channel port.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/390,813 US7020814B2 (en) | 2003-03-18 | 2003-03-18 | Method and system for emulating a Fiber Channel link over a SONET/SDH path |
US10/390,813 | 2003-03-18 | ||
PCT/US2004/007603 WO2004084461A2 (en) | 2003-03-18 | 2004-03-12 | Method and system for emulating a fibre channel link over a sonet/sdh path |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2519341A1 true CA2519341A1 (en) | 2004-09-30 |
CA2519341C CA2519341C (en) | 2009-11-17 |
Family
ID=33029680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002519341A Expired - Fee Related CA2519341C (en) | 2003-03-18 | 2004-03-12 | Method and system for emulating a fibre channel link over a sonet/sdh path |
Country Status (5)
Country | Link |
---|---|
US (1) | US7020814B2 (en) |
EP (1) | EP1604216B1 (en) |
AT (1) | ATE522819T1 (en) |
CA (1) | CA2519341C (en) |
WO (1) | WO2004084461A2 (en) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7596139B2 (en) * | 2000-11-17 | 2009-09-29 | Foundry Networks, Inc. | Backplane interface adapter with error control and redundant fabric |
US7236490B2 (en) | 2000-11-17 | 2007-06-26 | Foundry Networks, Inc. | Backplane interface adapter |
US7356030B2 (en) * | 2000-11-17 | 2008-04-08 | Foundry Networks, Inc. | Network switch cross point |
US7468975B1 (en) * | 2002-05-06 | 2008-12-23 | Foundry Networks, Inc. | Flexible method for processing data packets in a network routing system for enhanced efficiency and monitoring capability |
US7266117B1 (en) | 2002-05-06 | 2007-09-04 | Foundry Networks, Inc. | System architecture for very fast ethernet blade |
US20120155466A1 (en) | 2002-05-06 | 2012-06-21 | Ian Edward Davis | Method and apparatus for efficiently processing data packets in a computer network |
US20090279558A1 (en) * | 2002-05-06 | 2009-11-12 | Ian Edward Davis | Network routing apparatus for enhanced efficiency and monitoring capability |
US7187687B1 (en) * | 2002-05-06 | 2007-03-06 | Foundry Networks, Inc. | Pipeline method and system for switching packets |
US7653526B1 (en) * | 2002-08-16 | 2010-01-26 | Cisco Technology, Inc. | Method and system for emulating an ethernet link over a sonet path |
US6901072B1 (en) | 2003-05-15 | 2005-05-31 | Foundry Networks, Inc. | System and method for high speed packet transmission implementing dual transmit and receive pipelines |
US7251743B2 (en) * | 2003-11-20 | 2007-07-31 | International Business Machines Corporation | Method, system, and program for transmitting input/output requests from a primary controller to a secondary controller |
US7568026B2 (en) * | 2004-02-13 | 2009-07-28 | Cisco Technology, Inc. | Method and system for efficient link recovery for fibre channel over SONET/SDH transport path |
US7817659B2 (en) * | 2004-03-26 | 2010-10-19 | Foundry Networks, Llc | Method and apparatus for aggregating input data streams |
US8730961B1 (en) | 2004-04-26 | 2014-05-20 | Foundry Networks, Llc | System and method for optimizing router lookup |
US7657703B1 (en) * | 2004-10-29 | 2010-02-02 | Foundry Networks, Inc. | Double density content addressable memory (CAM) lookup scheme |
US7321600B2 (en) * | 2005-01-28 | 2008-01-22 | International Business Machines Corporation | System, method, and article of manufacture for initializing a communication link using GFP data frames |
CN1956564A (en) * | 2005-10-26 | 2007-05-02 | Ut斯达康通讯有限公司 | Multi-protocol signal transmission method based on CPRI in distributed base station system and its device |
US8448162B2 (en) | 2005-12-28 | 2013-05-21 | Foundry Networks, Llc | Hitless software upgrades |
US7844181B2 (en) * | 2006-03-06 | 2010-11-30 | Cisco Technology, Inc. | Simple fibre channel speed negotiation across transport |
US7630405B1 (en) * | 2006-05-27 | 2009-12-08 | Cisco Technology, Inc. | Techniques for ensuring synchronized processing at remote fiber channel and fiber connectivity networks |
US7903654B2 (en) * | 2006-08-22 | 2011-03-08 | Foundry Networks, Llc | System and method for ECMP load sharing |
US8238255B2 (en) | 2006-11-22 | 2012-08-07 | Foundry Networks, Llc | Recovering from failures without impact on data traffic in a shared bus architecture |
US8155011B2 (en) | 2007-01-11 | 2012-04-10 | Foundry Networks, Llc | Techniques for using dual memory structures for processing failure detection protocol packets |
US8995829B2 (en) * | 2007-06-05 | 2015-03-31 | Cisco Technology, Inc. | Optical link quality monitoring in a computer network |
US8271859B2 (en) | 2007-07-18 | 2012-09-18 | Foundry Networks Llc | Segmented CRC design in high speed networks |
US8037399B2 (en) * | 2007-07-18 | 2011-10-11 | Foundry Networks, Llc | Techniques for segmented CRC design in high speed networks |
US8509236B2 (en) | 2007-09-26 | 2013-08-13 | Foundry Networks, Llc | Techniques for selecting paths and/or trunk ports for forwarding traffic flows |
CN101459549B (en) * | 2007-12-14 | 2011-09-21 | 华为技术有限公司 | Link failure processing method and data forwarding device |
US8776088B2 (en) | 2009-03-30 | 2014-07-08 | Microsoft Corporation | Operating system distributed over heterogeneous platforms |
US8090901B2 (en) | 2009-05-14 | 2012-01-03 | Brocade Communications Systems, Inc. | TCAM management approach that minimize movements |
US8599850B2 (en) | 2009-09-21 | 2013-12-03 | Brocade Communications Systems, Inc. | Provisioning single or multistage networks using ethernet service instances (ESIs) |
US9036656B1 (en) | 2010-06-02 | 2015-05-19 | Cisco Technology, Inc. | Lightweight reliability protocol over fibre-channel to provide for load-balancing and resiliency |
JP5733131B2 (en) * | 2011-09-22 | 2015-06-10 | 富士通株式会社 | Communication apparatus and path establishment method |
US9531765B1 (en) | 2012-12-21 | 2016-12-27 | Emc Corporation | System and method for maximizing system data cache efficiency in a connection-oriented data proxy service |
US9407601B1 (en) * | 2012-12-21 | 2016-08-02 | Emc Corporation | Reliable client transport over fibre channel using a block device access model |
US9514151B1 (en) | 2012-12-21 | 2016-12-06 | Emc Corporation | System and method for simultaneous shared access to data buffers by two threads, in a connection-oriented data proxy service |
US9473590B1 (en) | 2012-12-21 | 2016-10-18 | Emc Corporation | Client connection establishment over fibre channel using a block device access model |
US9647905B1 (en) | 2012-12-21 | 2017-05-09 | EMC IP Holding Company LLC | System and method for optimized management of statistics counters, supporting lock-free updates, and queries for any to-the-present time interval |
US9712427B1 (en) | 2012-12-21 | 2017-07-18 | EMC IP Holding Company LLC | Dynamic server-driven path management for a connection-oriented transport using the SCSI block device model |
US9563423B1 (en) | 2012-12-21 | 2017-02-07 | EMC IP Holding Company LLC | System and method for simultaneous shared access to data buffers by two threads, in a connection-oriented data proxy service |
US9270786B1 (en) * | 2012-12-21 | 2016-02-23 | Emc Corporation | System and method for proxying TCP connections over a SCSI-based transport |
US9591099B1 (en) | 2012-12-21 | 2017-03-07 | EMC IP Holding Company LLC | Server connection establishment over fibre channel using a block device access model |
US9942134B2 (en) | 2015-09-30 | 2018-04-10 | International Business Machines Corporation | Holding of a link in an optical interface by a lower level processor until authorization is received from an upper level processor |
US10339072B2 (en) * | 2016-04-01 | 2019-07-02 | Intel Corporation | Read delivery for memory subsystem with narrow bandwidth repeater channel |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5638518A (en) | 1994-10-24 | 1997-06-10 | Lsi Logic Corporation | Node loop core for implementing transmission protocol in fibre channel |
US5610745A (en) | 1995-10-26 | 1997-03-11 | Hewlett-Packard Co. | Method and apparatus for tracking buffer availability |
JP3743094B2 (en) * | 1996-04-11 | 2006-02-08 | ソニー株式会社 | Signal processing apparatus, integrated circuit and self-diagnosis method thereof |
US5959994A (en) | 1996-08-19 | 1999-09-28 | Ncr Corporation | ATM/SONET network enhanced as a universal computer system interconnect |
US5959489A (en) * | 1997-01-07 | 1999-09-28 | Lucent Technologies Inc. | Method and apparatus for controlling selectable functions of an external circuit |
US6108713A (en) | 1997-02-11 | 2000-08-22 | Xaqti Corporation | Media access control architectures and network management systems |
US6452906B1 (en) | 1997-08-20 | 2002-09-17 | At&T Corp. | Fault detection and isolation in a synchronous optical network (SONET) and in a synchronous digital hierarchy (SDH) network |
US6233072B1 (en) * | 1997-12-31 | 2001-05-15 | Mci Communications Corporation | Method and system for restoring coincident line and facility failures |
US5941972A (en) | 1997-12-31 | 1999-08-24 | Crossroads Systems, Inc. | Storage router and method for providing virtual local storage |
US6400730B1 (en) | 1999-03-10 | 2002-06-04 | Nishan Systems, Inc. | Method and apparatus for transferring data between IP network devices and SCSI and fibre channel devices over an IP network |
US6636529B1 (en) | 1999-10-07 | 2003-10-21 | Nortel Networks Limited | Semi transparent tributary for synchronous transmission |
AU4707001A (en) * | 1999-11-12 | 2001-06-25 | Crossroads Systems, Inc. | Encapsulation protocol for linking storage area networks over a packet-based network |
JP2002198994A (en) | 2000-12-26 | 2002-07-12 | Nec Corp | Method and device for gfp frame transfer |
US20020176450A1 (en) | 2001-01-31 | 2002-11-28 | Sycamore Networks, Inc. | System and methods for selectively transmitting ethernet traffic over SONET/SDH optical network |
US6654383B2 (en) | 2001-05-31 | 2003-11-25 | International Business Machines Corporation | Multi-protocol agile framer |
JP2003060736A (en) * | 2001-08-21 | 2003-02-28 | Fujitsu Ltd | Transmitting device |
US20030074449A1 (en) | 2001-10-12 | 2003-04-17 | Rory Smith | Bandwidth allocation in a synchronous transmission network for packet oriented signals |
US20040052520A1 (en) * | 2002-02-07 | 2004-03-18 | Ross Halgren | Path protection in WDM network |
US7304952B2 (en) | 2002-05-21 | 2007-12-04 | Applied Micro Circuits Corporation | Protocol-mapping network access device with user-provisionable wide area network flow control |
EP1567874A4 (en) * | 2002-09-20 | 2010-11-24 | Nortel Networks Ltd | System and method for managing an optical networking service |
US7567581B2 (en) | 2002-10-21 | 2009-07-28 | Broadcom Corporation | Multi-service channelized SONET mapper framer |
US20040085904A1 (en) | 2002-10-31 | 2004-05-06 | Bordogna Mark A. | Method for flow control of packets aggregated from multiple logical ports over a transport link |
US6859437B2 (en) | 2002-11-05 | 2005-02-22 | Nortel Networks Limited | Method and system for extending the reach of a data communication channel using a flow control interception device |
-
2003
- 2003-03-18 US US10/390,813 patent/US7020814B2/en not_active Expired - Lifetime
-
2004
- 2004-03-12 AT AT04720394T patent/ATE522819T1/en not_active IP Right Cessation
- 2004-03-12 CA CA002519341A patent/CA2519341C/en not_active Expired - Fee Related
- 2004-03-12 WO PCT/US2004/007603 patent/WO2004084461A2/en active Application Filing
- 2004-03-12 EP EP04720394A patent/EP1604216B1/en not_active Expired - Lifetime
Also Published As
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ATE522819T1 (en) | 2011-09-15 |
EP1604216A4 (en) | 2008-05-07 |
US7020814B2 (en) | 2006-03-28 |
EP1604216A2 (en) | 2005-12-14 |
CA2519341C (en) | 2009-11-17 |
EP1604216B1 (en) | 2011-08-31 |
WO2004084461A3 (en) | 2005-05-19 |
WO2004084461A2 (en) | 2004-09-30 |
US20050010849A1 (en) | 2005-01-13 |
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