US20050135251A1 - Method and system for reducing congestion in computer networks - Google Patents
Method and system for reducing congestion in computer networks Download PDFInfo
- Publication number
- US20050135251A1 US20050135251A1 US11/057,912 US5791205A US2005135251A1 US 20050135251 A1 US20050135251 A1 US 20050135251A1 US 5791205 A US5791205 A US 5791205A US 2005135251 A1 US2005135251 A1 US 2005135251A1
- Authority
- US
- United States
- Prior art keywords
- value
- time stamp
- data packet
- counter
- stamp value
- 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.)
- Abandoned
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/28—Flow control; Congestion control in relation to timing considerations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/56—Queue scheduling implementing delay-aware scheduling
- H04L47/564—Attaching a deadline to packets, e.g. earliest due date first
Definitions
- the present invention relates to computer networks, and more particularly to reducing congestion in computer networks.
- Computer networks are used in every facet of today's business and personal life. Whether it involves sending electronic mail or accessing remote data, a computer network is used to accomplish various tasks.
- data packets enter a data path serially, one after another, and then data packets are processed individually.
- the number of data of data packets received in a data queue is based on the size of the queue, which can be programmed by a user. Hence, in some instances a large number of data packets may be received in a data packet queue.
- the packet at the beginning (“head packet”) must be processed first and packets following the head packet must wait for processing. This results in packet congestion. If the head packet never gets processed, then the data path stalls and hence must be re-set. This results in inefficiency and can be very expensive for businesses.
- a system for discarding expired network data packets includes a counter for assigning a time stamp value for data packets received in a data packet queue; and a comparator for comparing an extracted time stamp value with a counter value generated by the counter.
- the time stamp value may be based on the upper two bits of the counter value.
- the counter value may include a base increment value and a value generated by a first programmable register.
- the system also includes a second register for storing the extracted time stamp value.
- the comparator checks for data packet expiration if the counter value has changed or if the second register is loaded with a new data packet at the head of the data packet queue.
- a method for discarding expired network data packets includes assigning a time stamp value to data packets that are received in a data packet queue, wherein the time stamp value is based on a counter value; extracting the time stamp value after the counter value changes or a new data packet is received at the head of the data packet queue; comparing the extracted time stamp value with the counter value; and discarding a data packet if the time stamp value has expired.
- separate memory buffers or timestamp headers are not required to determine when a packet has expired.
- the time stamp and expiration value may be programmed to meet the granularity needs of different networks.
- serial data packet reception is streamlined and data packet congestion is avoided.
- FIG. 1A is a block diagram showing plural computer systems operationally coupled to a network
- FIG. 1B is a block diagram of the computing systems shown in FIG. 1A
- FIG. 1C is a block diagram showing a network using the INFINIBAND standard, according to one aspect of the present invention.
- FIG. 1D is a block diagram of a switch using the system, according to one aspect of the present invention.
- FIG. 2 is a block diagram of a system according to one aspect of the present invention.
- FIG. 3 is a flow diagram of executable process steps for reducing network data packet congestion, according to one aspect of the present invention.
- FIG. 1A is a block diagram showing plural computing systems 101 - 103 operationally coupled to a network 104 .
- network 104 may operate using multiple protocols, for example, TCP/IP, fiber channel or any other protocol.
- FIG. 1B is a block diagram showing the internal functional architecture of a computing system (e.g. 101 ).
- computer 101 includes a central processing unit (“CPU”) 101 A for executing computer-executable process steps and interfaces with a computer bus 101 F.
- CPU 101 A may be a PentiumTM class processor sold and marketed by Intel Corp.TM or any other processor.
- computing system 101 includes a network interface card (“NIC”) 101 B, a rotating disk 101 D, random access memory (“RAM”) 101 E and read only memory (“ROM”) 101 C.
- NIC network interface card
- RAM random access memory
- ROM read only memory
- NIC 101 B provides system 101 with connectivity to network 104 .
- NIC 101 B may have its own processor or dedicated chip to conduct specific operations.
- Disk 101 D stores operating system program files, application program files, and other files. Some of these files are stored on disk 101 D using an installation program. For example, CPU 101 A executes computer-executable process steps of an installation program so that CPU 101 A can properly execute the application program.
- RAM 101 E also interfaces to computer bus 101 F to provide CPU 101 A with access to memory storage.
- CPU 101 A stores and executes the process steps out of RAM 101 E.
- Read only memory (“ROM”) 101 C is provided to store invariant instruction sequences such as start-up instruction sequences or basic input/output operating system (BIOS) sequences for operation of keyboards etc. (not shown).
- BIOS basic input/output operating system
- FIG. 1C shows a block diagram of plural computing devices operationally coupled using the Infiniband architecture as described in the Infiniband standard specification, published by the Infiniband Trade Association.
- FIG. 1C shows system 117 A with a fabric 117 .
- Fabric 117 includes plural switches 106 , 107 , 111 and 112 .
- Fabric 117 also includes a router 108 that is coupled to a wide area network 109 and local area network 110 .
- network 104 may include both WAN 109 and LAN 110 .
- Switch 106 is operationally coupled to a RAID storage system 105 and system 102 , while system 101 may be operationally coupled to switch 107 .
- Switch 112 may be coupled to a small computer system interface (“SCSI”) SCSI port 113 that is coupled to SCSI based devices. Switch 112 may also be coupled to Ethernet 114 , fiber channel device (s) 115 and other device(s) 116 .
- SCSI small computer system interface
- Switch 112 may also be coupled to Ethernet 114 , fiber channel device (s) 115 and other device(s) 116 .
- FIG. 1D shows a block diagram of switch 112 that includes a processor 120 which is operationally coupled to plural ports 122 , 123 , 124 and 125 via a control port 121 and cross-bar 119 .
- processor 120 may be a reduced instruction set computer (RISC) type microprocessor.
- RISC reduced instruction set computer
- Ports 122 - 125 may be similar to ports 113 - 116 , respectively.
- Switch 112 may be coupled to a processor 129 that is coupled to Ethernet 127 and serial port 128 .
- processor 129 may be similar to CPU 101 A in system 101 .
- FIG. 2 is a block diagram of a system 200 that reduces data packet congestion in a network data path 208 .
- Network data path 208 shows data packets received from a device or the network into a switch ( 112 ).
- Network data path 208 shows data packets 200 and 201 moving in direction 208 .
- Data packet 200 includes a start of frame header 200 A and end of frame 200 C.
- data packet 201 includes a start of frame header 201 A and end of frame 201 C.
- a counter 203 tags a time stamp 200 B to the data packet.
- the time stamp code 200 B is embedded in the first word of data packet 200 .
- time stamp code 200 B value is extracted by register 206 .
- comparator 205 compares the extracted value 206 A with counter 203 value ( 203 A).
- Counter 203 value 203 A may be based on a base increment value and programmable variable time stamp (VTS) register 204 value 204 A or any other command from RISC processor 120 . This allows VTS register 204 to program the time stamp value 202 using counter 203 .
- VTS variable time stamp
- Comparator 205 checks if the timer for data packets has expired whenever counter 203 value changes or register 206 is re-loaded (i.e. if new data packets arrive at the head of queue 208 ). Comparator 205 compares value 206 A with counter value 203 A to determine if the timer for a packet has expired. Based on the comparison, Comparator 205 generates a pass signal 205 B if the timer has not expired, or fail signal 205 A, if the timer expired.
- the foregoing illustration is an example to show how the components of FIG. 2 will determine if a packet has expired.
- the example is only an illustration and is not intended to limit the adaptive aspects of the present invention.
- FIG. 3 shows a flow diagram of executable process steps that allows efficient processing of data packets.
- step S 300 data packets are received from the network. Data packets flow serially in data path 208 .
- a time stamp is assigned for a data packet.
- the time stamp is embedded in the start of frame header of the data packet (e.g. 201 B).
- Time stamp 202 is based on VTS register value 204 and may be 2 bits.
- step S 302 the time stamp value is extracted.
- the time stamp value is extracted and sent to register 206 .
- step S 303 the time stamp value 206 A is compared to counter value 203 A.
- Counter value 203 A may be based on VTS register 204 output 204 A.
- step S 304 the process determines if the timer for a data packet has expired. This is determined by the comparison in step S 303 .
- step S 305 B the packet is discarded if the timer has expired, or kept in the queue, in step S 305 A, if the timer has not expired.
- separate memory, buffers or timestamp headers are not required to determine when a packet has expired.
- the time stamp and expiration value may be programmed to meet the needs of different networks.
- serial data packet reception is streamlined and data packet congestion is avoided.
Abstract
A system and method for discarding expired network data packets is provided. A time stamp value is assigned to data packets that are received in a data packet queue, wherein the time stamp value is based on a counter value. The time stamp value is extracted after the counter value changes or a new data packet is received at the head of the data packet queue. The extracted time stamp value is then compared with the counter value. Data packets with expired timer value are discarded.
Description
- 1. Field of the Invention
- The present invention relates to computer networks, and more particularly to reducing congestion in computer networks.
- 2. Background of the Invention
- Computer networks are used in every facet of today's business and personal life. Whether it involves sending electronic mail or accessing remote data, a computer network is used to accomplish various tasks.
- In a typical computer network, data packets enter a data path serially, one after another, and then data packets are processed individually. The number of data of data packets received in a data queue is based on the size of the queue, which can be programmed by a user. Hence, in some instances a large number of data packets may be received in a data packet queue. If in-order data packet processing is required, then the packet at the beginning (“head packet”) must be processed first and packets following the head packet must wait for processing. This results in packet congestion. If the head packet never gets processed, then the data path stalls and hence must be re-set. This results in inefficiency and can be very expensive for businesses.
- Computer networks today cannot afford to have congestion and stall problems. Conventional data packet techniques do not solve the foregoing congestion and stalling problems. Conventional techniques require separate memory buffers to store data packets. This increases cost and makes the process inefficient since additional operations are needed to write/read data packets from the memory buffers.
- Therefore, what is needed is a process and system in a network for discarding data packets that have been received for a certain period.
- In one aspect of the present invention, a system for discarding expired network data packets is provided. The system includes a counter for assigning a time stamp value for data packets received in a data packet queue; and a comparator for comparing an extracted time stamp value with a counter value generated by the counter. The time stamp value may be based on the upper two bits of the counter value. The counter value may include a base increment value and a value generated by a first programmable register.
- The system also includes a second register for storing the extracted time stamp value.
- The comparator checks for data packet expiration if the counter value has changed or if the second register is loaded with a new data packet at the head of the data packet queue.
- In another aspect of the present invention, a method for discarding expired network data packets is provided. The method includes assigning a time stamp value to data packets that are received in a data packet queue, wherein the time stamp value is based on a counter value; extracting the time stamp value after the counter value changes or a new data packet is received at the head of the data packet queue; comparing the extracted time stamp value with the counter value; and discarding a data packet if the time stamp value has expired.
- In one aspect of the present invention, separate memory buffers or timestamp headers are not required to determine when a packet has expired.
- In another aspect of the present invention, the time stamp and expiration value may be programmed to meet the granularity needs of different networks.
- In yet another aspect of the present invention, serial data packet reception is streamlined and data packet congestion is avoided.
- This brief summary has been provided so that the nature of the invention may be understood quickly. A more complete understanding of the invention can be obtained by reference to the following detailed description of the preferred embodiments thereof concerning the attached drawings.
- The foregoing features and other features of the present invention will now be described with reference to the drawings of a preferred embodiment. In the drawings, the same components have the same reference numerals. The illustrated embodiment is intended to illustrate, but not to limit the invention. The drawings include the following Figures:
-
FIG. 1A is a block diagram showing plural computer systems operationally coupled to a network; -
FIG. 1B is a block diagram of the computing systems shown inFIG. 1A -
FIG. 1C is a block diagram showing a network using the INFINIBAND standard, according to one aspect of the present invention; -
FIG. 1D is a block diagram of a switch using the system, according to one aspect of the present invention; -
FIG. 2 is a block diagram of a system according to one aspect of the present invention; and -
FIG. 3 is a flow diagram of executable process steps for reducing network data packet congestion, according to one aspect of the present invention. -
FIG. 1A is a block diagram showing plural computing systems 101-103 operationally coupled to anetwork 104. In one aspect of the present invention,network 104 may operate using multiple protocols, for example, TCP/IP, fiber channel or any other protocol. -
FIG. 1B is a block diagram showing the internal functional architecture of a computing system (e.g. 101). As shown inFIG. 1B ,computer 101 includes a central processing unit (“CPU”) 101A for executing computer-executable process steps and interfaces with acomputer bus 101F. CPU 101A may be a Pentium™ class processor sold and marketed by Intel Corp.™ or any other processor. - Among other components,
computing system 101 includes a network interface card (“NIC”) 101B, a rotatingdisk 101D, random access memory (“RAM”) 101E and read only memory (“ROM”) 101C. - NIC 101B provides
system 101 with connectivity tonetwork 104. NIC 101B may have its own processor or dedicated chip to conduct specific operations. - Disk 101D stores operating system program files, application program files, and other files. Some of these files are stored on
disk 101D using an installation program. For example,CPU 101A executes computer-executable process steps of an installation program so thatCPU 101A can properly execute the application program. - A random access main memory (“RAM”) 101E also interfaces to
computer bus 101F to provideCPU 101A with access to memory storage. When executing stored computer-executable process steps fromdisk 101D (or other storage media such as a floppy disk 16 or via network connection 104),CPU 101A stores and executes the process steps out ofRAM 101E. - Read only memory (“ROM”) 101C is provided to store invariant instruction sequences such as start-up instruction sequences or basic input/output operating system (BIOS) sequences for operation of keyboards etc. (not shown).
-
FIG. 1C shows a block diagram of plural computing devices operationally coupled using the Infiniband architecture as described in the Infiniband standard specification, published by the Infiniband Trade Association. -
FIG. 1C showssystem 117A with afabric 117.Fabric 117 includesplural switches Fabric 117 also includes arouter 108 that is coupled to awide area network 109 andlocal area network 110. It is noteworthy thatnetwork 104 may include bothWAN 109 andLAN 110. -
Switch 106 is operationally coupled to a RAID storage system 105 andsystem 102, whilesystem 101 may be operationally coupled to switch 107. -
Switch 112 may be coupled to a small computer system interface (“SCSI”) SCSI port 113 that is coupled to SCSI based devices.Switch 112 may also be coupled toEthernet 114, fiber channel device (s) 115 and other device(s) 116. -
FIG. 1D shows a block diagram ofswitch 112 that includes aprocessor 120 which is operationally coupled toplural ports control port 121 and cross-bar 119. In one aspect of the present invention,processor 120 may be a reduced instruction set computer (RISC) type microprocessor. Ports 122-125 may be similar to ports 113-116, respectively. -
Switch 112 may be coupled to aprocessor 129 that is coupled toEthernet 127 andserial port 128. In one aspect of the present invention,processor 129 may be similar toCPU 101A insystem 101. -
FIG. 2 is a block diagram of asystem 200 that reduces data packet congestion in anetwork data path 208.Network data path 208 shows data packets received from a device or the network into a switch (112). -
Network data path 208 showsdata packets direction 208.Data packet 200 includes a start offrame header 200A and end offrame 200C. Similarly,data packet 201 includes a start offrame header 201A and end offrame 201C. - When a data packet (e.g.) 200 is received, a
counter 203 tags atime stamp 200B to the data packet. Typically, thetime stamp code 200B is embedded in the first word ofdata packet 200. Beforedata packet 200 is processed or while waiting at the head of apacket queue 208,time stamp code 200B value is extracted byregister 206. As discussed below,comparator 205 compares the extractedvalue 206A withcounter 203 value (203A). -
Counter 203value 203A may be based on a base increment value and programmable variable time stamp (VTS) register 204value 204A or any other command fromRISC processor 120. This allows VTS register 204 to program thetime stamp value 202 usingcounter 203. -
Comparator 205 checks if the timer for data packets has expired whenever counter 203 value changes or register 206 is re-loaded (i.e. if new data packets arrive at the head of queue 208).Comparator 205 comparesvalue 206A withcounter value 203A to determine if the timer for a packet has expired. Based on the comparison,Comparator 205 generates apass signal 205B if the timer has not expired, or failsignal 205A, if the timer expired. - An example of how the expiration value is determined is provided below:
-
VTS Register 204 value=VTS - Base Increment for VTS register 204: M milli-seconds
- Expiration value: 2M*2{circumflex over ( )}VTS+X %−Y %
- In one aspect of the present invention, the following values may be used:
- VTS=8, M=2, X=1% and Y=51%, and expiration value is between 250 ms to 500 ms.
- The foregoing illustration is an example to show how the components of
FIG. 2 will determine if a packet has expired. The example is only an illustration and is not intended to limit the adaptive aspects of the present invention. -
FIG. 3 shows a flow diagram of executable process steps that allows efficient processing of data packets. - Turning in detail to
FIG. 3 , in step S300 data packets are received from the network. Data packets flow serially indata path 208. - In step S301, a time stamp is assigned for a data packet. In one aspect of the present invention, the time stamp is embedded in the start of frame header of the data packet (e.g. 201B).
Time stamp 202 is based onVTS register value 204 and may be 2 bits. - In step S302, the time stamp value is extracted. The time stamp value is extracted and sent to register 206.
- In step S303, the
time stamp value 206A is compared to countervalue 203A.Counter value 203A may be based on VTS register 204output 204A. - In step S304, the process determines if the timer for a data packet has expired. This is determined by the comparison in step S303.
- In step S305B the packet is discarded if the timer has expired, or kept in the queue, in step S305A, if the timer has not expired.
- In one aspect of the present invention, separate memory, buffers or timestamp headers are not required to determine when a packet has expired.
- In another aspect of the present invention, the time stamp and expiration value may be programmed to meet the needs of different networks.
- In yet another aspect of the present invention, serial data packet reception is streamlined and data packet congestion is avoided.
- Although the present invention has been described with reference to specific embodiments, these embodiments are illustrative only and not limiting. Many other applications and embodiments of the present invention will be apparent in light of this disclosure and the following claims.
Claims (24)
1. (canceled)
2. (canceled)
3. (canceled)
4. (canceled)
5. (canceled)
6. (canceled)
7. (canceled)
8. (canceled)
9. (canceled)
10. (canceled)
11. A system for discarding expired network data packets, comprising:
a counter for inserting a time stamp value in data packets received in a data packet queue; and
a comparator for comparing an extracted time stamp value and a counter value generated by the counter, wherein the time stamp value is extracted before a data packet is processed or while a data packet is waiting at a head of a data packet queue, and a packet is discarded if a time stamp value for the packet has expired.
12. The system of claim 11 , wherein the counter value includes a base increment value.
13. The system of claim 11 , wherein the counter value includes a value generated by a first programmable register.
14. The system of claim 11 , further comprising:
a second register for storing the extracted time stamp value.
15. The system of claim 14 , wherein the comparator checks for data packet expiration if the counter value has changed or if the second register is loaded with a new data packet at the head of the data packet queue.
16. The system of claim 11 , wherein the time stamp value is inserted in a start of frame header of a data packet.
17. A method for discarding expired network data packets, comprising:
inserting a time stamp value in data packets that are received in a data packet queue, wherein the time stamp value is based on a counter value;
extracting the time stamp value before a data packet is processed or while a data packet is waiting at a head of a packet queue;
comparing the extracted time stamp value with the counter value; and
discarding a data packet if the time stamp value has expired.
18. The method of claim 17 , wherein the counter value is based on a base increment value and a programmable register value.
19. The method of claim 17 , wherein the time stamp value is inserted in a start of frame header of a data packet.
20. A network having a switch, comprising:
a system for discarding expired network data packets, wherein the system includes a counter for inserting a time stamp value in data packets received in a data packet queue, wherein the time stamp value is inserted in a start of frame header; and a comparator for comparing an extracted time stamp value and a counter value generated by the counter, wherein the time stamp value is extracted before a data packet is processed or while a data packet is waiting at a head of a data packet queue, and a packet is discarded if a time stamp value for the packet has expired.
21. The network of claim 19 , wherein the counter value includes a base increment value.
22. The network of claim 19 , wherein the counter value includes a value generated by a first programmable register.
23. The network of claim 19 , further comprising:
a second register for storing the extracted time stamp value.
24. The network of claim 22 , wherein the comparator checks for data packet expiration if the counter value has changed or if the second register is loaded with a new data packet at a head of the data packet queue.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/057,912 US20050135251A1 (en) | 2002-10-07 | 2005-02-15 | Method and system for reducing congestion in computer networks |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/266,360 US6886141B1 (en) | 2002-10-07 | 2002-10-07 | Method and system for reducing congestion in computer networks |
US11/057,912 US20050135251A1 (en) | 2002-10-07 | 2005-02-15 | Method and system for reducing congestion in computer networks |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/266,360 Continuation US6886141B1 (en) | 2002-10-07 | 2002-10-07 | Method and system for reducing congestion in computer networks |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050135251A1 true US20050135251A1 (en) | 2005-06-23 |
Family
ID=34434697
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/266,360 Expired - Lifetime US6886141B1 (en) | 2002-10-07 | 2002-10-07 | Method and system for reducing congestion in computer networks |
US11/057,912 Abandoned US20050135251A1 (en) | 2002-10-07 | 2005-02-15 | Method and system for reducing congestion in computer networks |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/266,360 Expired - Lifetime US6886141B1 (en) | 2002-10-07 | 2002-10-07 | Method and system for reducing congestion in computer networks |
Country Status (1)
Country | Link |
---|---|
US (2) | US6886141B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060286993A1 (en) * | 2005-06-20 | 2006-12-21 | Motorola, Inc. | Throttling server communications in a communication network |
US20080235370A1 (en) * | 2007-03-21 | 2008-09-25 | Somansa Co., Ltd. | Method and System for Controlling Network Traffic of P2P and Instant Messenger Softwares |
CN102170663A (en) * | 2011-05-23 | 2011-08-31 | 迈普通信技术股份有限公司 | 3G (The Third Generation Telecommunication)-based method and equipment for guaranteeing service quality in real-time transmission service |
CN105610725A (en) * | 2016-01-11 | 2016-05-25 | 盛科网络(苏州)有限公司 | Dynamic queue congestion aging management method and device |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7230929B2 (en) * | 2002-07-22 | 2007-06-12 | Qlogic, Corporation | Method and system for dynamically assigning domain identification in a multi-module fibre channel switch |
US7154886B2 (en) * | 2002-07-22 | 2006-12-26 | Qlogic Corporation | Method and system for primary blade selection in a multi-module fiber channel switch |
US7334046B1 (en) | 2002-08-05 | 2008-02-19 | Qlogic, Corporation | System and method for optimizing frame routing in a network |
US7397768B1 (en) | 2002-09-11 | 2008-07-08 | Qlogic, Corporation | Zone management in a multi-module fibre channel switch |
US7362717B1 (en) | 2002-10-03 | 2008-04-22 | Qlogic, Corporation | Method and system for using distributed name servers in multi-module fibre channel switches |
US7355966B2 (en) * | 2003-07-16 | 2008-04-08 | Qlogic, Corporation | Method and system for minimizing disruption in common-access networks |
US7152132B2 (en) * | 2003-07-16 | 2006-12-19 | Qlogic Corporation | Method and apparatus for improving buffer utilization in communication networks |
US7388843B2 (en) * | 2003-07-16 | 2008-06-17 | Qlogic, Corporation | Method and apparatus for testing loop pathway integrity in a fibre channel arbitrated loop |
US7430175B2 (en) * | 2003-07-21 | 2008-09-30 | Qlogic, Corporation | Method and system for managing traffic in fibre channel systems |
US7525983B2 (en) * | 2003-07-21 | 2009-04-28 | Qlogic, Corporation | Method and system for selecting virtual lanes in fibre channel switches |
US7630384B2 (en) * | 2003-07-21 | 2009-12-08 | Qlogic, Corporation | Method and system for distributing credit in fibre channel systems |
US7522529B2 (en) * | 2003-07-21 | 2009-04-21 | Qlogic, Corporation | Method and system for detecting congestion and over subscription in a fibre channel network |
US7420982B2 (en) * | 2003-07-21 | 2008-09-02 | Qlogic, Corporation | Method and system for keeping a fibre channel arbitrated loop open during frame gaps |
US7406092B2 (en) * | 2003-07-21 | 2008-07-29 | Qlogic, Corporation | Programmable pseudo virtual lanes for fibre channel systems |
US7447224B2 (en) * | 2003-07-21 | 2008-11-04 | Qlogic, Corporation | Method and system for routing fibre channel frames |
US7583597B2 (en) * | 2003-07-21 | 2009-09-01 | Qlogic Corporation | Method and system for improving bandwidth and reducing idles in fibre channel switches |
US7646767B2 (en) * | 2003-07-21 | 2010-01-12 | Qlogic, Corporation | Method and system for programmable data dependant network routing |
US7580354B2 (en) * | 2003-07-21 | 2009-08-25 | Qlogic, Corporation | Multi-speed cut through operation in fibre channel switches |
US7512067B2 (en) * | 2003-07-21 | 2009-03-31 | Qlogic, Corporation | Method and system for congestion control based on optimum bandwidth allocation in a fibre channel switch |
US7352701B1 (en) | 2003-09-19 | 2008-04-01 | Qlogic, Corporation | Buffer to buffer credit recovery for in-line fibre channel credit extension devices |
EP1687947B1 (en) * | 2003-11-25 | 2012-10-03 | International Business Machines Corporation | Mobile hub and managing events in a mobile hub |
US7480293B2 (en) * | 2004-02-05 | 2009-01-20 | Qlogic, Corporation | Method and system for preventing deadlock in fibre channel fabrics using frame priorities |
US7930377B2 (en) | 2004-04-23 | 2011-04-19 | Qlogic, Corporation | Method and system for using boot servers in networks |
US7669190B2 (en) | 2004-05-18 | 2010-02-23 | Qlogic, Corporation | Method and system for efficiently recording processor events in host bus adapters |
US8295299B2 (en) * | 2004-10-01 | 2012-10-23 | Qlogic, Corporation | High speed fibre channel switch element |
US7676611B2 (en) * | 2004-10-01 | 2010-03-09 | Qlogic, Corporation | Method and system for processing out of orders frames |
US7380030B2 (en) * | 2004-10-01 | 2008-05-27 | Qlogic, Corp. | Method and system for using an in-line credit extender with a host bus adapter |
US7593997B2 (en) * | 2004-10-01 | 2009-09-22 | Qlogic, Corporation | Method and system for LUN remapping in fibre channel networks |
CN101087171A (en) * | 2006-08-26 | 2007-12-12 | 华为技术有限公司 | A method and system of transmission control of wireless link |
US7792131B1 (en) * | 2009-03-10 | 2010-09-07 | Cisco Technologies, Inc. | Queue sharing with fair rate guarantee |
US8593965B2 (en) | 2010-07-19 | 2013-11-26 | Cisco Technology, Inc. | Mitigating the effects of congested interfaces on a fabric |
US20120106653A1 (en) * | 2010-11-03 | 2012-05-03 | Broadcom Corporation | Multimedia processing within a vehicular communication network |
US9391840B2 (en) * | 2012-05-02 | 2016-07-12 | Solarflare Communications, Inc. | Avoiding delayed data |
EP2736205A1 (en) * | 2012-11-22 | 2014-05-28 | Alcatel Lucent | Apparatus and method for forwarding packets or messages |
Citations (96)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US729593A (en) * | 1902-12-16 | 1903-06-02 | Draper Co | Take-up-arresting mechanism for looms. |
US4081612A (en) * | 1975-07-31 | 1978-03-28 | Hasler Ag | Method for building-up of routing addresses in a digital telecommunication network |
US4200929A (en) * | 1978-01-23 | 1980-04-29 | Davidjuk Alexandr D | Input device for delivery of data from digital transmitters |
US4258418A (en) * | 1978-12-28 | 1981-03-24 | International Business Machines Corporation | Variable capacity data buffer system |
US5090011A (en) * | 1988-12-23 | 1992-02-18 | Hitachi, Ltd. | Packet congestion control method and packet switching equipment |
US5115430A (en) * | 1990-09-24 | 1992-05-19 | At&T Bell Laboratories | Fair access of multi-priority traffic to distributed-queue dual-bus networks |
US5280483A (en) * | 1990-08-09 | 1994-01-18 | Fujitsu Limited | Traffic control system for asynchronous transfer mode exchange |
US5291481A (en) * | 1991-10-04 | 1994-03-01 | At&T Bell Laboratories | Congestion control for high speed packet networks |
US5390173A (en) * | 1992-10-22 | 1995-02-14 | Digital Equipment Corporation | Packet format in hub for packet data communications system |
US5594672A (en) * | 1994-05-20 | 1997-01-14 | Micro Energetics Corporation | Peripheral power saver |
US5623492A (en) * | 1995-03-24 | 1997-04-22 | U S West Technologies, Inc. | Methods and systems for managing bandwidth resources in a fast packet switching network |
US5706279A (en) * | 1995-03-24 | 1998-01-06 | U S West Technologies, Inc. | Methods and systems for managing packet flow into a fast packet switching network |
US5732206A (en) * | 1996-07-23 | 1998-03-24 | International Business Machines Corporation | Method, apparatus and program product for disruptive recovery in a data processing system |
US5751710A (en) * | 1996-06-11 | 1998-05-12 | Cisco Technology, Inc. | Technique for connecting cards of a distributed network switch |
US5757771A (en) * | 1995-11-14 | 1998-05-26 | Yurie Systems, Inc. | Queue management to serve variable and constant bit rate traffic at multiple quality of service levels in a ATM switch |
US5892604A (en) * | 1996-05-09 | 1999-04-06 | Nippon Telegraph And Telephone Corporation | ATM switch |
US5894560A (en) * | 1995-03-17 | 1999-04-13 | Lsi Logic Corporation | Method and apparatus for controlling I/O channels responsive to an availability of a plurality of I/O devices to transfer data |
US6011779A (en) * | 1996-12-30 | 2000-01-04 | Hyundai Electronics America | ATM switch queuing system |
US6026092A (en) * | 1996-12-31 | 2000-02-15 | Northern Telecom Limited | High performance fault tolerant switching system for multimedia satellite and terrestrial communications networks |
US6046979A (en) * | 1998-05-04 | 2000-04-04 | Cabletron Systems, Inc. | Method and apparatus for controlling the flow of variable-length packets through a multiport switch |
US6055618A (en) * | 1995-10-31 | 2000-04-25 | Cray Research, Inc. | Virtual maintenance network in multiprocessing system having a non-flow controlled virtual maintenance channel |
US6185203B1 (en) * | 1997-02-18 | 2001-02-06 | Vixel Corporation | Fibre channel switching fabric |
US6209089B1 (en) * | 1998-08-12 | 2001-03-27 | Microsoft Corporation | Correcting for changed client machine hardware using a server-based operating system |
US6230276B1 (en) * | 1999-02-01 | 2001-05-08 | Douglas T Hayden | Energy conserving measurement system under software control and method for battery powered products |
US6335935B2 (en) * | 1998-07-08 | 2002-01-01 | Broadcom Corporation | Network switching architecture with fast filtering processor |
US6343324B1 (en) * | 1999-09-13 | 2002-01-29 | International Business Machines Corporation | Method and system for controlling access share storage devices in a network environment by configuring host-to-volume mapping data structures in the controller memory for granting and denying access to the devices |
US20020016838A1 (en) * | 1999-12-17 | 2002-02-07 | Ceki Geluc | Scheme for blocking the use of lost or stolen network-connectable computer systems |
US6353612B1 (en) * | 1998-06-19 | 2002-03-05 | Brocade Communications Systems, Inc. | Probing device |
US20020034178A1 (en) * | 2000-06-02 | 2002-03-21 | Inrange Technologies Corporation | Fibre channel address adaptor having data buffer extension and address mapping in a fibre channel switch |
US6370605B1 (en) * | 1999-03-04 | 2002-04-09 | Sun Microsystems, Inc. | Switch based scalable performance storage architecture |
US6397360B1 (en) * | 1999-07-28 | 2002-05-28 | Lsi Logic Corporation | Method and apparatus for generating a fibre channel compliant frame |
US20030002516A1 (en) * | 2001-06-29 | 2003-01-02 | Michael Boock | Method and apparatus for adapting to a clock rate transition in a communications network using idles |
US6509988B1 (en) * | 1997-09-16 | 2003-01-21 | Nec Corporation | IEEE serial bus physical layer interface having a speed setting circuit |
US20030026287A1 (en) * | 2001-07-31 | 2003-02-06 | Mullendore Rodney N. | Method and system for managing time division multiplexing (TDM) timeslots in a network switch |
US20030026267A1 (en) * | 2001-07-31 | 2003-02-06 | Oberman Stuart F. | Virtual channels in a network switch |
US20030033487A1 (en) * | 2001-08-09 | 2003-02-13 | International Business Machines Corporation | Method and apparatus for managing data in a distributed buffer system |
US6522656B1 (en) * | 1994-09-12 | 2003-02-18 | 3Com Corporation | Distributed processing ethernet switch with adaptive cut-through switching |
US20030035433A1 (en) * | 2001-08-16 | 2003-02-20 | International Business Machines Corporation | Apparatus and method for virtualizing a queue pair space to minimize time-wait impacts |
US20030056000A1 (en) * | 2001-07-26 | 2003-03-20 | Nishan Systems, Inc. | Transfer ready frame reordering |
US20030063567A1 (en) * | 2001-10-02 | 2003-04-03 | Stmicroelectronics, Inc. | Ethernet device and method for extending ethernet FIFO buffer |
US20030079019A1 (en) * | 2001-09-28 | 2003-04-24 | Lolayekar Santosh C. | Enforcing quality of service in a storage network |
US20030076788A1 (en) * | 2001-10-19 | 2003-04-24 | Sun Microsystems, Inc. | Method, system, and program for discovering devices communicating through a switch |
US6563796B1 (en) * | 1998-03-18 | 2003-05-13 | Nippon Telegraph And Telephone Corporation | Apparatus for quality of service evaluation and traffic measurement |
US20030091062A1 (en) * | 2001-11-13 | 2003-05-15 | Lay Samuel C. | Method and apparatus for providing optimized high speed link utilization |
US20030093607A1 (en) * | 2001-11-09 | 2003-05-15 | Main Kevin K. | Low pin count (LPC) I/O bridge |
US6570853B1 (en) * | 1998-12-18 | 2003-05-27 | Lsi Logic Corporation | Method and apparatus for transmitting data to a node in a distributed data processing system |
US20040013113A1 (en) * | 2002-07-17 | 2004-01-22 | Ranjeeta Singh | Technique to improve network routing using best-match and exact-match techniques |
US20040013088A1 (en) * | 2002-07-19 | 2004-01-22 | International Business Machines Corporation | Long distance repeater for digital information |
US6684209B1 (en) * | 2000-01-14 | 2004-01-27 | Hitachi, Ltd. | Security method and system for storage subsystem |
US20040024831A1 (en) * | 2002-06-28 | 2004-02-05 | Shih-Yun Yang | Blade server management system |
US20040027989A1 (en) * | 2002-07-29 | 2004-02-12 | Brocade Communications Systems, Inc. | Cascade credit sharing for fibre channel links |
US6697914B1 (en) * | 2000-09-11 | 2004-02-24 | Western Digital Ventures, Inc. | Switched node comprising a disk controller with integrated multi-port switching circuitry |
US6697368B2 (en) * | 2000-11-17 | 2004-02-24 | Foundry Networks, Inc. | High-performance network switch |
US6700877B1 (en) * | 1997-08-05 | 2004-03-02 | Siemens Aktiengesellschaft | Method and bus system for automatic address allocation |
US20040054776A1 (en) * | 2002-09-16 | 2004-03-18 | Finisar Corporation | Network expert analysis process |
US20040054866A1 (en) * | 1998-06-29 | 2004-03-18 | Blumenau Steven M. | Mapping of hosts to logical storage units and data storage ports in a data processing system |
US20040064664A1 (en) * | 2002-09-30 | 2004-04-01 | Gil Mercedes E. | Buffer management architecture and method for an infiniband subnetwork |
US20040081196A1 (en) * | 2002-10-29 | 2004-04-29 | Elliott Stephen J. | Protocol independent hub |
US20040085974A1 (en) * | 2002-07-02 | 2004-05-06 | Vixel Corporation | Methods and apparatus for device zoning in fibre channel arbitrated loop systems |
US20040085994A1 (en) * | 2002-07-02 | 2004-05-06 | Vixel Corporation | Methods and apparatus for device access fairness in fibre channel arbitrated loop systems |
US20040092278A1 (en) * | 2002-11-13 | 2004-05-13 | Wilhelmus Diepstraten | Managing priority queues and escalation in wireless communication systems |
US6738381B1 (en) * | 1997-12-19 | 2004-05-18 | Telefonaktiebolaget Lm Ericsson (Publ) | ATM time stamped queuing |
US20050018673A1 (en) * | 2003-07-21 | 2005-01-27 | Dropps Frank R. | Method and system for using extended fabric features with fibre channel switch elements |
US20050036485A1 (en) * | 2003-08-11 | 2005-02-17 | Eilers Fritz R. | Network having switchover with no data loss |
US20050036763A1 (en) * | 1999-05-06 | 2005-02-17 | Motoki Kato | Method of processing multiplexed program data using entry points and time units |
US20050036499A1 (en) * | 2001-12-26 | 2005-02-17 | Andiamo Systems, Inc., A Delaware Corporation | Fibre Channel Switch that enables end devices in different fabrics to communicate with one another while retaining their unique Fibre Channel Domain_IDs |
US20050047334A1 (en) * | 2001-06-13 | 2005-03-03 | Paul Harry V. | Fibre channel switch |
US20050076113A1 (en) * | 2003-09-12 | 2005-04-07 | Finisar Corporation | Network analysis sample management process |
US20050073956A1 (en) * | 2003-08-11 | 2005-04-07 | Moores John D. | Network switching device ingress memory system |
US20050088969A1 (en) * | 2001-12-19 | 2005-04-28 | Scott Carlsen | Port congestion notification in a switch |
US6888831B1 (en) * | 2000-09-28 | 2005-05-03 | Western Digital Ventures, Inc. | Distributed resource reservation system for establishing a path through a multi-dimensional computer network to support isochronous data |
US20050099970A1 (en) * | 2003-11-06 | 2005-05-12 | Halliday David J. | Method and apparatus for mapping TDM payload data |
US20050108444A1 (en) * | 2003-11-19 | 2005-05-19 | Flauaus Gary R. | Method of detecting and monitoring fabric congestion |
US20050111845A1 (en) * | 2002-06-25 | 2005-05-26 | Stephen Nelson | Apparatus, system and methods for modifying operating characteristics of optoelectronic devices |
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 |
US6983342B2 (en) * | 2002-10-08 | 2006-01-03 | Lsi Logic Corporation | High speed OC-768 configurable link layer chip |
US6987768B1 (en) * | 1999-06-02 | 2006-01-17 | Fujitsu Limited | Packet transferring apparatus |
US6988149B2 (en) * | 2002-02-26 | 2006-01-17 | Lsi Logic Corporation | Integrated target masking |
US20060013248A1 (en) * | 1999-08-13 | 2006-01-19 | Hamayun Mujeeb | Switching device interfaces |
US20060034302A1 (en) * | 2004-07-19 | 2006-02-16 | David Peterson | Inter-fabric routing |
US20060034192A1 (en) * | 2004-08-12 | 2006-02-16 | Broadcom Corporation | Apparatus and system for coupling and decoupling initiator devices to a network using an arbitrated loop without disrupting the network |
US20060047852A1 (en) * | 2004-04-23 | 2006-03-02 | Shishir Shah | Method and system for using boot servers in networks |
US7010607B1 (en) * | 1999-09-15 | 2006-03-07 | Hewlett-Packard Development Company, L.P. | Method for training a communication link between ports to correct for errors |
US20060074927A1 (en) * | 2004-09-24 | 2006-04-06 | Emc Corporation | Enclosure configurable to perform in-band or out-of-band enclosure management |
US7031615B2 (en) * | 2001-10-04 | 2006-04-18 | Finisar Corporation | Optical channel selection and evaluation system |
US7039070B2 (en) * | 2000-10-27 | 2006-05-02 | Kabushiki Kaisha Toshiba | Moving image packet decoding and reproducing apparatus, reproduction time control method thereof, computer program product for controlling reproduction time and multimedia information receiving apparatus |
US20060107260A1 (en) * | 2000-11-17 | 2006-05-18 | Giovanni Motta | Efficient generator of update packages for mobile devices |
US7188364B2 (en) * | 2001-12-20 | 2007-03-06 | Cranite Systems, Inc. | Personal virtual bridged local area networks |
US7187688B2 (en) * | 2002-06-28 | 2007-03-06 | International Business Machines Corporation | Priority arbitration mechanism |
US7190667B2 (en) * | 2001-04-26 | 2007-03-13 | Intel Corporation | Link level packet flow control mechanism |
US7209478B2 (en) * | 2002-05-31 | 2007-04-24 | Palau Acquisition Corporation (Delaware) | Apparatus and methods for dynamic reallocation of virtual lane buffer space in an infiniband switch |
US7215680B2 (en) * | 2001-07-26 | 2007-05-08 | Nishan Systems, Inc. | Method and apparatus for scheduling packet flow on a fibre channel arbitrated loop |
US7315511B2 (en) * | 2001-10-24 | 2008-01-01 | Fujitsu Limited | Transmitter, SONET/SDH transmitter, and transmission system |
US7327680B1 (en) * | 2002-11-05 | 2008-02-05 | Cisco Technology, Inc. | Methods and apparatus for network congestion control |
US7346707B1 (en) * | 2002-01-16 | 2008-03-18 | Advanced Micro Devices, Inc. | Arrangement in an infiniband channel adapter for sharing memory space for work queue entries using multiply-linked lists |
US7352740B2 (en) * | 2003-04-29 | 2008-04-01 | Brocade Communciations Systems, Inc. | Extent-based fibre channel zoning in hardware |
Family Cites Families (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4162375A (en) | 1972-03-23 | 1979-07-24 | Siemens Aktiengesellschaft | Time-divison multiplex switching network with spatial switching stages |
GB2074815B (en) | 1980-04-24 | 1984-06-27 | Plessey Co Ltd | Telecommunications switching network using digital switching modules |
US4546468A (en) | 1982-09-13 | 1985-10-08 | At&T Bell Laboratories | Switching network control circuit |
US4569043A (en) | 1983-06-22 | 1986-02-04 | Gte Automatic Electric Inc. | Arrangement for interfacing the space stage to the time stages of a T-S-T digital switching system |
US4725835A (en) | 1985-09-13 | 1988-02-16 | T-Bar Incorporated | Time multiplexed bus matrix switching system |
US4821034A (en) | 1987-02-06 | 1989-04-11 | Ancor Communications, Inc. | Digital exchange switch element and network |
US5144622A (en) | 1988-02-15 | 1992-09-01 | Hitachi, Ltd. | Network system |
US5367520A (en) | 1992-11-25 | 1994-11-22 | Bell Communcations Research, Inc. | Method and system for routing cells in an ATM switch |
US5412653A (en) | 1993-10-15 | 1995-05-02 | International Business Machines Corporation | Dynamic switch cascading system |
GB9401092D0 (en) | 1994-01-21 | 1994-03-16 | Newbridge Networks Corp | A network management system |
GB9408574D0 (en) | 1994-04-29 | 1994-06-22 | Newbridge Networks Corp | Atm switching system |
US5598541A (en) | 1994-10-24 | 1997-01-28 | Lsi Logic Corporation | Node loop port communication interface super core for fibre channel |
US5687172A (en) | 1994-12-30 | 1997-11-11 | Lucent Technologies Inc. | Terabit per second distribution network |
US5748612A (en) | 1995-08-10 | 1998-05-05 | Mcdata Corporation | Method and apparatus for implementing virtual circuits in a fibre channel system |
US6047323A (en) | 1995-10-19 | 2000-04-04 | Hewlett-Packard Company | Creation and migration of distributed streams in clusters of networked computers |
US5610745A (en) | 1995-10-26 | 1997-03-11 | Hewlett-Packard Co. | Method and apparatus for tracking buffer availability |
JPH09247176A (en) | 1996-03-11 | 1997-09-19 | Hitachi Ltd | Asynchronous transfer mode exchange system |
KR100194813B1 (en) | 1996-12-05 | 1999-06-15 | 정선종 | Packet Switching Device with Multichannel / Multicast Switching Function and Packet Switching System Using the Same |
US6188690B1 (en) | 1996-12-12 | 2001-02-13 | Pmc-Sierra, Inc. | Method and apparatus for high speed, scalable communication system |
JP3156623B2 (en) | 1997-01-31 | 2001-04-16 | 日本電気株式会社 | Fiber channel fabric |
US6014383A (en) | 1997-02-10 | 2000-01-11 | Compaq Computer Corporation | System and method for controlling multiple initiators in a fibre channel environment |
US6160813A (en) | 1997-03-21 | 2000-12-12 | Brocade Communications Systems, Inc. | Fibre channel switching system and method |
US5987028A (en) | 1997-05-12 | 1999-11-16 | Industrial Technology Research Insitute | Multiple channel ATM switch |
US6081512A (en) | 1997-06-30 | 2000-06-27 | Sun Microsystems, Inc. | Spanning tree support in a high performance network device |
US6324181B1 (en) | 1998-04-16 | 2001-11-27 | 3Com Corporation | Fibre channel switched arbitrated loop |
US6411599B1 (en) | 1998-05-29 | 2002-06-25 | International Business Machines Corporation | Fault tolerant switching architecture |
US6330236B1 (en) | 1998-06-11 | 2001-12-11 | Synchrodyne Networks, Inc. | Packet switching method with time-based routing |
US6885664B2 (en) | 1998-07-22 | 2005-04-26 | Synchrodyne Networks, Inc. | Distributed switching system and method with time-based routing |
US6597691B1 (en) | 1998-09-01 | 2003-07-22 | Ancor Communications, Inc. | High performance switching |
US6308220B1 (en) | 1999-01-29 | 2001-10-23 | Neomagic Corp. | Circulating parallel-search engine with random inputs for network routing table stored in a wide embedded DRAM |
US6424658B1 (en) | 1999-01-29 | 2002-07-23 | Neomagic Corp. | Store-and-forward network switch using an embedded DRAM |
US6467008B1 (en) * | 1999-03-01 | 2002-10-15 | Sun Microsystems, Inc. | Method and apparatus for indicating an interrupt in a network interface |
US6697359B1 (en) | 1999-07-02 | 2004-02-24 | Ancor Communications, Inc. | High performance switch fabric element and switch systems |
ATE411675T1 (en) | 1999-12-10 | 2008-10-15 | Qlogic Switch Products Inc | METHOD AND DEVICE FOR CREDIT-BASED FLOW CONTROL IN FIBER CHANNEL SYSTEMS |
EP1290837B1 (en) | 2000-06-05 | 2007-10-24 | Qlogic Switch Products, Inc. | Hardware-enforced loop-level hard zoning for fibre channel switch fabric |
US7230929B2 (en) | 2002-07-22 | 2007-06-12 | Qlogic, Corporation | Method and system for dynamically assigning domain identification in a multi-module fibre channel switch |
US7154886B2 (en) | 2002-07-22 | 2006-12-26 | Qlogic Corporation | Method and system for primary blade selection in a multi-module fiber channel switch |
-
2002
- 2002-10-07 US US10/266,360 patent/US6886141B1/en not_active Expired - Lifetime
-
2005
- 2005-02-15 US US11/057,912 patent/US20050135251A1/en not_active Abandoned
Patent Citations (99)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US729593A (en) * | 1902-12-16 | 1903-06-02 | Draper Co | Take-up-arresting mechanism for looms. |
US4081612A (en) * | 1975-07-31 | 1978-03-28 | Hasler Ag | Method for building-up of routing addresses in a digital telecommunication network |
US4200929A (en) * | 1978-01-23 | 1980-04-29 | Davidjuk Alexandr D | Input device for delivery of data from digital transmitters |
US4258418A (en) * | 1978-12-28 | 1981-03-24 | International Business Machines Corporation | Variable capacity data buffer system |
US5090011A (en) * | 1988-12-23 | 1992-02-18 | Hitachi, Ltd. | Packet congestion control method and packet switching equipment |
US5280483A (en) * | 1990-08-09 | 1994-01-18 | Fujitsu Limited | Traffic control system for asynchronous transfer mode exchange |
US5115430A (en) * | 1990-09-24 | 1992-05-19 | At&T Bell Laboratories | Fair access of multi-priority traffic to distributed-queue dual-bus networks |
US5291481A (en) * | 1991-10-04 | 1994-03-01 | At&T Bell Laboratories | Congestion control for high speed packet networks |
US5390173A (en) * | 1992-10-22 | 1995-02-14 | Digital Equipment Corporation | Packet format in hub for packet data communications system |
US5594672A (en) * | 1994-05-20 | 1997-01-14 | Micro Energetics Corporation | Peripheral power saver |
US6522656B1 (en) * | 1994-09-12 | 2003-02-18 | 3Com Corporation | Distributed processing ethernet switch with adaptive cut-through switching |
US5894560A (en) * | 1995-03-17 | 1999-04-13 | Lsi Logic Corporation | Method and apparatus for controlling I/O channels responsive to an availability of a plurality of I/O devices to transfer data |
US5623492A (en) * | 1995-03-24 | 1997-04-22 | U S West Technologies, Inc. | Methods and systems for managing bandwidth resources in a fast packet switching network |
US5706279A (en) * | 1995-03-24 | 1998-01-06 | U S West Technologies, Inc. | Methods and systems for managing packet flow into a fast packet switching network |
US6055618A (en) * | 1995-10-31 | 2000-04-25 | Cray Research, Inc. | Virtual maintenance network in multiprocessing system having a non-flow controlled virtual maintenance channel |
US5757771A (en) * | 1995-11-14 | 1998-05-26 | Yurie Systems, Inc. | Queue management to serve variable and constant bit rate traffic at multiple quality of service levels in a ATM switch |
US5892604A (en) * | 1996-05-09 | 1999-04-06 | Nippon Telegraph And Telephone Corporation | ATM switch |
US5751710A (en) * | 1996-06-11 | 1998-05-12 | Cisco Technology, Inc. | Technique for connecting cards of a distributed network switch |
US5732206A (en) * | 1996-07-23 | 1998-03-24 | International Business Machines Corporation | Method, apparatus and program product for disruptive recovery in a data processing system |
US6011779A (en) * | 1996-12-30 | 2000-01-04 | Hyundai Electronics America | ATM switch queuing system |
US6026092A (en) * | 1996-12-31 | 2000-02-15 | Northern Telecom Limited | High performance fault tolerant switching system for multimedia satellite and terrestrial communications networks |
US6185203B1 (en) * | 1997-02-18 | 2001-02-06 | Vixel Corporation | Fibre channel switching fabric |
US6700877B1 (en) * | 1997-08-05 | 2004-03-02 | Siemens Aktiengesellschaft | Method and bus system for automatic address allocation |
US6509988B1 (en) * | 1997-09-16 | 2003-01-21 | Nec Corporation | IEEE serial bus physical layer interface having a speed setting circuit |
US6738381B1 (en) * | 1997-12-19 | 2004-05-18 | Telefonaktiebolaget Lm Ericsson (Publ) | ATM time stamped queuing |
US6563796B1 (en) * | 1998-03-18 | 2003-05-13 | Nippon Telegraph And Telephone Corporation | Apparatus for quality of service evaluation and traffic measurement |
US6046979A (en) * | 1998-05-04 | 2000-04-04 | Cabletron Systems, Inc. | Method and apparatus for controlling the flow of variable-length packets through a multiport switch |
US6353612B1 (en) * | 1998-06-19 | 2002-03-05 | Brocade Communications Systems, Inc. | Probing device |
US20040054866A1 (en) * | 1998-06-29 | 2004-03-18 | Blumenau Steven M. | Mapping of hosts to logical storage units and data storage ports in a data processing system |
US6988130B2 (en) * | 1998-06-29 | 2006-01-17 | Emc Corporation | Virtual ports for partitioning of data storage |
US7051182B2 (en) * | 1998-06-29 | 2006-05-23 | Emc Corporation | Mapping of hosts to logical storage units and data storage ports in a data processing system |
US6335935B2 (en) * | 1998-07-08 | 2002-01-01 | Broadcom Corporation | Network switching architecture with fast filtering processor |
US6209089B1 (en) * | 1998-08-12 | 2001-03-27 | Microsoft Corporation | Correcting for changed client machine hardware using a server-based operating system |
US6570853B1 (en) * | 1998-12-18 | 2003-05-27 | Lsi Logic Corporation | Method and apparatus for transmitting data to a node in a distributed data processing system |
US6230276B1 (en) * | 1999-02-01 | 2001-05-08 | Douglas T Hayden | Energy conserving measurement system under software control and method for battery powered products |
US6370605B1 (en) * | 1999-03-04 | 2002-04-09 | Sun Microsystems, Inc. | Switch based scalable performance storage architecture |
US20050036763A1 (en) * | 1999-05-06 | 2005-02-17 | Motoki Kato | Method of processing multiplexed program data using entry points and time units |
US6987768B1 (en) * | 1999-06-02 | 2006-01-17 | Fujitsu Limited | Packet transferring apparatus |
US6397360B1 (en) * | 1999-07-28 | 2002-05-28 | Lsi Logic Corporation | Method and apparatus for generating a fibre channel compliant frame |
US20060013248A1 (en) * | 1999-08-13 | 2006-01-19 | Hamayun Mujeeb | Switching device interfaces |
US6343324B1 (en) * | 1999-09-13 | 2002-01-29 | International Business Machines Corporation | Method and system for controlling access share storage devices in a network environment by configuring host-to-volume mapping data structures in the controller memory for granting and denying access to the devices |
US7010607B1 (en) * | 1999-09-15 | 2006-03-07 | Hewlett-Packard Development Company, L.P. | Method for training a communication link between ports to correct for errors |
US20020016838A1 (en) * | 1999-12-17 | 2002-02-07 | Ceki Geluc | Scheme for blocking the use of lost or stolen network-connectable computer systems |
US6684209B1 (en) * | 2000-01-14 | 2004-01-27 | Hitachi, Ltd. | Security method and system for storage subsystem |
US7024410B2 (en) * | 2000-01-14 | 2006-04-04 | Hitachi, Ltd. | Security method and system for storage subsystem |
US20020034178A1 (en) * | 2000-06-02 | 2002-03-21 | Inrange Technologies Corporation | Fibre channel address adaptor having data buffer extension and address mapping in a fibre channel switch |
US6697914B1 (en) * | 2000-09-11 | 2004-02-24 | Western Digital Ventures, Inc. | Switched node comprising a disk controller with integrated multi-port switching circuitry |
US6888831B1 (en) * | 2000-09-28 | 2005-05-03 | Western Digital Ventures, Inc. | Distributed resource reservation system for establishing a path through a multi-dimensional computer network to support isochronous data |
US7039070B2 (en) * | 2000-10-27 | 2006-05-02 | Kabushiki Kaisha Toshiba | Moving image packet decoding and reproducing apparatus, reproduction time control method thereof, computer program product for controlling reproduction time and multimedia information receiving apparatus |
US6697368B2 (en) * | 2000-11-17 | 2004-02-24 | Foundry Networks, Inc. | High-performance network switch |
US20060107260A1 (en) * | 2000-11-17 | 2006-05-18 | Giovanni Motta | Efficient generator of update packages for mobile devices |
US7190667B2 (en) * | 2001-04-26 | 2007-03-13 | Intel Corporation | Link level packet flow control mechanism |
US20050047334A1 (en) * | 2001-06-13 | 2005-03-03 | Paul Harry V. | Fibre channel switch |
US20030002516A1 (en) * | 2001-06-29 | 2003-01-02 | Michael Boock | Method and apparatus for adapting to a clock rate transition in a communications network using idles |
US7215680B2 (en) * | 2001-07-26 | 2007-05-08 | Nishan Systems, Inc. | Method and apparatus for scheduling packet flow on a fibre channel arbitrated loop |
US20030056000A1 (en) * | 2001-07-26 | 2003-03-20 | Nishan Systems, Inc. | Transfer ready frame reordering |
US20030026267A1 (en) * | 2001-07-31 | 2003-02-06 | Oberman Stuart F. | Virtual channels in a network switch |
US20030026287A1 (en) * | 2001-07-31 | 2003-02-06 | Mullendore Rodney N. | Method and system for managing time division multiplexing (TDM) timeslots in a network switch |
US20030033487A1 (en) * | 2001-08-09 | 2003-02-13 | International Business Machines Corporation | Method and apparatus for managing data in a distributed buffer system |
US20030035433A1 (en) * | 2001-08-16 | 2003-02-20 | International Business Machines Corporation | Apparatus and method for virtualizing a queue pair space to minimize time-wait impacts |
US20030079019A1 (en) * | 2001-09-28 | 2003-04-24 | Lolayekar Santosh C. | Enforcing quality of service in a storage network |
US20030063567A1 (en) * | 2001-10-02 | 2003-04-03 | Stmicroelectronics, Inc. | Ethernet device and method for extending ethernet FIFO buffer |
US7031615B2 (en) * | 2001-10-04 | 2006-04-18 | Finisar Corporation | Optical channel selection and evaluation system |
US20030076788A1 (en) * | 2001-10-19 | 2003-04-24 | Sun Microsystems, Inc. | Method, system, and program for discovering devices communicating through a switch |
US7315511B2 (en) * | 2001-10-24 | 2008-01-01 | Fujitsu Limited | Transmitter, SONET/SDH transmitter, and transmission system |
US20030093607A1 (en) * | 2001-11-09 | 2003-05-15 | Main Kevin K. | Low pin count (LPC) I/O bridge |
US20030091062A1 (en) * | 2001-11-13 | 2003-05-15 | Lay Samuel C. | Method and apparatus for providing optimized high speed link utilization |
US20050088969A1 (en) * | 2001-12-19 | 2005-04-28 | Scott Carlsen | Port congestion notification in a switch |
US7188364B2 (en) * | 2001-12-20 | 2007-03-06 | Cranite Systems, Inc. | Personal virtual bridged local area networks |
US20050036499A1 (en) * | 2001-12-26 | 2005-02-17 | Andiamo Systems, Inc., A Delaware Corporation | Fibre Channel Switch that enables end devices in different fabrics to communicate with one another while retaining their unique Fibre Channel Domain_IDs |
US7346707B1 (en) * | 2002-01-16 | 2008-03-18 | Advanced Micro Devices, Inc. | Arrangement in an infiniband channel adapter for sharing memory space for work queue entries using multiply-linked lists |
US6988149B2 (en) * | 2002-02-26 | 2006-01-17 | Lsi Logic Corporation | Integrated target masking |
US7209478B2 (en) * | 2002-05-31 | 2007-04-24 | Palau Acquisition Corporation (Delaware) | Apparatus and methods for dynamic reallocation of virtual lane buffer space in an infiniband switch |
US20050111845A1 (en) * | 2002-06-25 | 2005-05-26 | Stephen Nelson | Apparatus, system and methods for modifying operating characteristics of optoelectronic devices |
US20040024831A1 (en) * | 2002-06-28 | 2004-02-05 | Shih-Yun Yang | Blade server management system |
US7187688B2 (en) * | 2002-06-28 | 2007-03-06 | International Business Machines Corporation | Priority arbitration mechanism |
US20040085974A1 (en) * | 2002-07-02 | 2004-05-06 | Vixel Corporation | Methods and apparatus for device zoning in fibre channel arbitrated loop systems |
US20040085994A1 (en) * | 2002-07-02 | 2004-05-06 | Vixel Corporation | Methods and apparatus for device access fairness in fibre channel arbitrated loop systems |
US20040013113A1 (en) * | 2002-07-17 | 2004-01-22 | Ranjeeta Singh | Technique to improve network routing using best-match and exact-match techniques |
US20040013088A1 (en) * | 2002-07-19 | 2004-01-22 | International Business Machines Corporation | Long distance repeater for digital information |
US20040027989A1 (en) * | 2002-07-29 | 2004-02-12 | Brocade Communications Systems, Inc. | Cascade credit sharing for fibre channel links |
US20040054776A1 (en) * | 2002-09-16 | 2004-03-18 | Finisar Corporation | Network expert analysis process |
US20040064664A1 (en) * | 2002-09-30 | 2004-04-01 | Gil Mercedes E. | Buffer management architecture and method for an infiniband subnetwork |
US6983342B2 (en) * | 2002-10-08 | 2006-01-03 | Lsi Logic Corporation | High speed OC-768 configurable link layer chip |
US20040081196A1 (en) * | 2002-10-29 | 2004-04-29 | Elliott Stephen J. | Protocol independent hub |
US7327680B1 (en) * | 2002-11-05 | 2008-02-05 | Cisco Technology, Inc. | Methods and apparatus for network congestion control |
US20040092278A1 (en) * | 2002-11-13 | 2004-05-13 | Wilhelmus Diepstraten | Managing priority queues and escalation in wireless communication systems |
US7352740B2 (en) * | 2003-04-29 | 2008-04-01 | Brocade Communciations Systems, Inc. | Extent-based fibre channel zoning in hardware |
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 |
US20050018673A1 (en) * | 2003-07-21 | 2005-01-27 | Dropps Frank R. | Method and system for using extended fabric features with fibre channel switch elements |
US20050036485A1 (en) * | 2003-08-11 | 2005-02-17 | Eilers Fritz R. | Network having switchover with no data loss |
US20050073956A1 (en) * | 2003-08-11 | 2005-04-07 | Moores John D. | Network switching device ingress memory system |
US20050076113A1 (en) * | 2003-09-12 | 2005-04-07 | Finisar Corporation | Network analysis sample management process |
US20050099970A1 (en) * | 2003-11-06 | 2005-05-12 | Halliday David J. | Method and apparatus for mapping TDM payload data |
US20050108444A1 (en) * | 2003-11-19 | 2005-05-19 | Flauaus Gary R. | Method of detecting and monitoring fabric congestion |
US20060047852A1 (en) * | 2004-04-23 | 2006-03-02 | Shishir Shah | Method and system for using boot servers in networks |
US20060034302A1 (en) * | 2004-07-19 | 2006-02-16 | David Peterson | Inter-fabric routing |
US20060034192A1 (en) * | 2004-08-12 | 2006-02-16 | Broadcom Corporation | Apparatus and system for coupling and decoupling initiator devices to a network using an arbitrated loop without disrupting the network |
US20060074927A1 (en) * | 2004-09-24 | 2006-04-06 | Emc Corporation | Enclosure configurable to perform in-band or out-of-band enclosure management |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060286993A1 (en) * | 2005-06-20 | 2006-12-21 | Motorola, Inc. | Throttling server communications in a communication network |
US20080235370A1 (en) * | 2007-03-21 | 2008-09-25 | Somansa Co., Ltd. | Method and System for Controlling Network Traffic of P2P and Instant Messenger Softwares |
CN102170663A (en) * | 2011-05-23 | 2011-08-31 | 迈普通信技术股份有限公司 | 3G (The Third Generation Telecommunication)-based method and equipment for guaranteeing service quality in real-time transmission service |
CN105610725A (en) * | 2016-01-11 | 2016-05-25 | 盛科网络(苏州)有限公司 | Dynamic queue congestion aging management method and device |
Also Published As
Publication number | Publication date |
---|---|
US6886141B1 (en) | 2005-04-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6886141B1 (en) | Method and system for reducing congestion in computer networks | |
US8661167B2 (en) | DMA (direct memory access) coalescing | |
Kohler et al. | The Click modular router | |
US6611875B1 (en) | Control system for high speed rule processors | |
US20030185220A1 (en) | Dynamically loading parsing capabilities | |
US6570884B1 (en) | Receive filtering for communication interface | |
US9154418B1 (en) | Efficient packet classification in a network device | |
US20030099254A1 (en) | Systems and methods for interfacing asynchronous and non-asynchronous data media | |
EP1540922A1 (en) | Hardware-based packet filtering accelerator | |
WO2002086989A2 (en) | Alerting system, architecture and circuitry | |
JP3834280B2 (en) | Terminal device, priority processing method in terminal device, and program | |
US8510403B2 (en) | Self clocking interrupt generation in a network interface card | |
WO2001050259A1 (en) | Method and system for frame and protocol classification | |
US7103693B2 (en) | Method for applying interrupt coalescing to incoming messages based on message length | |
CN111385222A (en) | Real-time, time-aware, dynamic, context-aware, and reconfigurable ethernet packet classification | |
JP2006332927A (en) | Tcp/ip reception processing circuit and semiconductor integrated circuit having it | |
US7649906B2 (en) | Method of reducing buffer usage by detecting missing fragments and idle links for multilink protocols and devices incorporating same | |
US6925514B1 (en) | Multi-protocol bus system and method of operation thereof | |
WO2006006005A2 (en) | Chaining control marker data structure | |
WO2008121690A2 (en) | Data and control plane architecture for network application traffic management device | |
US20030118020A1 (en) | Method and apparatus for classification of packet data prior to storage in processor buffer memory | |
EP1331757A2 (en) | Processor with reduced memory requirements for high-speed routing and switching of packets | |
US7043544B2 (en) | Processor with multiple-pass non-sequential packet classification feature | |
KR20040021477A (en) | Network Interface Card for reducing the number of interrupt and method thereof | |
US7646724B2 (en) | Dynamic blocking in a shared host-network interface |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |