公开(公告)号：WO1998007257A1

公开(公告)日：1998-02-19

申请号：PCT/US1997003797

申请日：1997-03-12

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： ADVANCED MICRO DEVICES, INC. ,  KRISHNA, Gopal ,  KALKUNTE, Mohan

IPC: H04L12/413

CPC classification number: H04L12/413 ,  H04L12/44

Abstract: Delay times are modified in an Ethernet network device having captured the media channel by increasing the interframe spacing (IFS) between data packets. The modified IFS interval, increased by adding a delay interval to the minimum interpacket gap (IPG) interval after a predetermined number of consecutive successful transmissions, enables other network stations to transmit data during the deferral interval. The Ethernet network device maintains the modified IFS for a limited deferral interval, based upon a predetermined time interval or a number of successful transmissions by other network stations. Additional delay intervals may be added if the network station continues to exceed the predetermined number of consecutive successful transmissions. Hence, a network station can avoid capturing a network channel while ensuring access latencies.

Abstract translation: 在已经通过增加数据分组之间的帧间间隔（IFS）来捕获媒体信道的以太网网络设备中修改延迟时间。 通过在预定数量的连续成功传输之后将最小间隔间隔（IPG）间隔添加延迟间隔而增加的经修改的IFS间隔使其他网络站能够在延迟间隔期间发送数据。 以太网网络设备基于预定的时间间隔或其他网络站的成功传输的数量，在有限的延迟间隔内维护经修改的IFS。 如果网络站继续超过预定数量的连续成功传输，则可以添加额外的延迟时间间隔。 因此，网络站可以避免捕获网络信道，同时确保访问延迟。

公开(公告)号：WO1997048209A1

公开(公告)日：1997-12-18

申请号：PCT/US1997000858

申请日：1997-01-21

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： ADVANCED MICRO DEVICES, INC. ,  KALKUNTE, Mohan ,  KADAMBI, Jayant ,  MANGIN, James, Laurance ,  KRISHNA, Gopal

IPC: H04L12/413

CPC classification number: H04L12/40163 ,  H04L12/40013 ,  H04L12/40136 ,  H04L12/413

Abstract: Delay times are modified in Ethernet network devices by adding an integer multiple of a delay interval to the minimum interpacket gap (IPG) interval, and decrementing the integer in each network station in response to detected activity on the media. Each station has a unique integer value from the range of zero to the number of stations (N) minus one. The unique integer value ensures that each station has a different delay interval in accessing the media after sensing deassertion of the receive carrier. The station having a zero integer value will have its integer counter reset to (N-1) after a station transmits a data packet on the network, and the stations having nonzero integer values decrement their respective integer counters. Each network station also includes a deferral timer that counts the maximum delay interval of (N-1) delay intervals plus the minimum IPG value, and thus establishes a bounded access latency for a half-duplex shared network.

Abstract translation: 通过将延迟间隔的整数倍添加到最小分组间隙（IPG）间隔，在以太网网络设备中修改延迟时间，并且响应于媒体上检测到的活动而递减每个网络站中的整数。 每个站具有从零到站数（N）减一的唯一整数值​​。 唯一的整数值确保每个站在感测到接收载波的取消消息之后在访问媒体时具有不同的延迟时间间隔。 在站点在网络上发送数据包之后，具有零整数值的站将其整数计数器重置为（N-1），并且具有非零整数值的站减少它们各自的整数计数器。 每个网络站还包括延迟定时器，其计数（N-1）个延迟间隔的最大延迟间隔加上最小IPG值，从而建立半双工共享网络的有界访问等待时间。

公开(公告)号：WO1997037464A1

公开(公告)日：1997-10-09

申请号：PCT/US1996017853

申请日：1996-11-06

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： ADVANCED MICRO DEVICES, INC. ,  KALKUNTE, Mohan ,  KRISHNA, Gopal ,  MANGIN, Jim

IPC: H04L12/413

CPC classification number: H04L12/40143 ,  H04L12/413

Abstract: Delay times are modified in Ethernet network devices by adding a randomized time interval generated in accordance with a propagation delay between two network stations. A server in a client-server arrangement is given priority access over clients by adding to the clients' InterPacket Gap (IPG) interval a random time delay between zero and a maximum value equal to no more than twice the cable delay between the server and the network hub. The server can access the network media after the IPG interval, whereas clients must wait the additional random time delay before accessing the media, thereby improving server throughput and overall network throughput. Collision mediation is improved by adding a randomly selected integer multiple of a propagation delay between two stations, where the integer multiplier is randomly selected from a predetermined range of integers. The randomly selected integer multiple of the propagation delay provides a second dimension of random selection to minimize subsequent collisions and minimize the occurrence of capture effects in losing stations.

Abstract translation: 通过添加根据两个网络站之间的传播延迟生成的随机时间间隔，在以太网网络设备中修改延迟时间。 通过将客户端的InterPacket Gap（IPG）间隔添加到零和最大值之间的随机时间延迟等于不超过服务器与服务器之间的电缆延迟的两倍，客户端 - 服务器排列中的服务器将被优先访问客户端 网络中心。 服务器可以在IPG间隔后访问网络媒体，而客户端在访问媒体之前必须等待额外的随机时间延迟，从而提高服务器吞吐量和整体网络吞吐量。 通过在两个站之间添加随机选择的传播延迟的整数倍来改善碰撞中介，其中整数乘法器从预定的整数范围中随机选择。 传播延迟的随机选择的整数倍提供随机选择的第二维度以最小化随后的冲突并且使丢失站中的捕获效应的发生最小化。

公开(公告)号：EP0919090A1

公开(公告)日：1999-06-02

申请号：EP97914983.0

申请日：1997-03-12

Applicant: ADVANCED MICRO DEVICES INC.

Inventor： KRISHNA, Gopal ,  KALKUNTE, Mohan

IPC: H04L12

CPC classification number: H04L12/413 ,  H04L12/44

Abstract: Delay times are modified in an Ethernet network device having captured the media channel by increasing the interframe spacing (IFS) between data packets. The modified IFS interval, increased by adding a delay interval to the minimum interpacket gap (IPG) interval after a predetermined number of consecutive successful transmissions, enables other network stations to transmit data during the deferral interval. The Ethernet network device maintains the modified IFS for a limited deferral interval, based upon a predetermined time interval or a number of successful transmissions by other network stations. Additional delay intervals may be added if the network station continues to exceed the predetermined number of consecutive successful transmissions. Hence, a network station can avoid capturing a network channel while ensuring access latencies.

公开(公告)号：EP1262043A1

公开(公告)日：2002-12-04

申请号：EP00959729.5

申请日：2000-09-01

Applicant: ADVANCED MICRO DEVICES INC.

Inventor： KANURI, Mrudula ,  KRISHNA, Gopal

IPC: H04L12/46

CPC classification number: H04L12/4625 ,  H04L69/28

Abstract: A network switch, configured for performing layer 2 and layer 3 switching in an Ethernet (IEEE 802.3) network without blocking of incoming data packets, includes a network switch port having a packet classifier module configured for evaluating an incoming data packet on an instantaneous basis. The packet classifier module is able to monitor data flows between two network nodes interacting according to a prescribed network application. The packet classifier module determines the application state for a prescribed network application from a received layer 2 data packet, enabling switching logic within the network switch to utilize application-specific aging intervals for respective network applications such as HTTP, SNMP, ftp, Telnet, etc. in order to delete aged address entries from a network switch address table based on the supported network application. Determination of the application state from the received layer 2 data packet also enables the network switch to detect the end of a data flow for deletion of the corresponding address entry from the network switch address table.

公开(公告)号：EP0919090B1

公开(公告)日：2002-06-05

申请号：EP97914983.8

申请日：1997-03-12

Applicant: ADVANCED MICRO DEVICES INC.

Inventor： KRISHNA, Gopal ,  KALKUNTE, Mohan

IPC: H04L12/413

CPC classification number: H04L12/413 ,  H04L12/44

Abstract: Delay times are modified in an Ethernet network device having captured the media channel by increasing the interframe spacing (IFS) between data packets. The modified IFS interval, increased by adding a delay interval to the minimum interpacket gap (IPG) interval after a predetermined number of consecutive successful transmissions, enables other network stations to transmit data during the deferral interval. The Ethernet network device maintains the modified IFS for a limited deferral interval, based upon a predetermined time interval or a number of successful transmissions by other network stations. Additional delay intervals may be added if the network station continues to exceed the predetermined number of consecutive successful transmissions. Hence, a network station can avoid capturing a network channel while ensuring access latencies.

公开(公告)号：EP0904645A1

公开(公告)日：1999-03-31

申请号：EP97903014.0

申请日：1997-01-21

Applicant: ADVANCED MICRO DEVICES INC.

Inventor： KALKUNTE, Mohan ,  KADAMBI, Jayant ,  MANGIN, James, Laurance ,  KRISHNA, Gopal

IPC: H04L12

CPC classification number: H04L12/40163 ,  H04L12/40013 ,  H04L12/40136 ,  H04L12/413

Abstract: Delay times are modified in Ethernet network devices by adding an integer multiple of a delay interval to the minimum interpacket gap (IPG) interval, and decrementing the integer in each network station in response to detected activity on the media. Each station has a unique integer value from the range of zero to the number of stations (N) minus one. The unique integer value ensures that each station has a different delay interval in accessing the media after sensing deassertion of the receive carrier. The station having a zero integer value will have its integer counter reset to (N-1) after a station transmits a data packet on the network, and the stations having nonzero integer values decrement their respective integer counters. Each network station also includes a deferral timer that counts the maximum delay interval of (N-1) delay intervals plus the minimum IPG value, and thus establishes a bounded access latency for a half-duplex shared network.

公开(公告)号：EP1262043B1

公开(公告)日：2008-09-03

申请号：EP00959729.5

申请日：2000-09-01

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： KANURI, Mrudula ,  KRISHNA, Gopal

IPC: H04L12/46

CPC classification number: H04L12/4625 ,  H04L69/28

Abstract: A network switch, configured for performing layer 2 and layer 3 switching in an Ethernet (IEEE 802.3) network without blocking of incoming data packets, includes a network switch port having a packet classifier module configured for evaluating an incoming data packet on an instantaneous basis. The packet classifier module is able to monitor data flows between two network nodes interacting according to a prescribed network application. The packet classifier module determines the application state for a prescribed network application from a received layer 2 data packet, enabling switching logic within the network switch to utilize application-specific aging intervals for respective network applications such as HTTP, SNMP, ftp, Telnet, etc. in order to delete aged address entries from a network switch address table based on the supported network application. Determination of the application state from the received layer 2 data packet also enables the network switch to detect the end of a data flow for deletion of the corresponding address entry from the network switch address table.

公开(公告)号：EP0904645B1

公开(公告)日：2007-03-21

申请号：EP97903014.5

申请日：1997-01-21

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： KALKUNTE, Mohan ,  KADAMBI, Jayant ,  MANGIN, James, Laurance ,  KRISHNA, Gopal

IPC: H04L12/413

CPC classification number: H04L12/40163 ,  H04L12/40013 ,  H04L12/40136 ,  H04L12/413

Abstract: Delay times are modified in Ethernet network devices by adding an integer multiple of a delay interval to the minimum interpacket gap (IPG) interval, and decrementing the integer in each network station in response to detected activity on the media. Each station has a unique integer value from the range of zero to the number of stations (N) minus one. The unique integer value ensures that each station has a different delay interval in accessing the media after sensing deassertion of the receive carrier. The station having a zero integer value will have its integer counter reset to (N-1) after a station transmits a data packet on the network, and the stations having nonzero integer values decrement their respective integer counters. Each network station also includes a deferral timer that counts the maximum delay interval of (N-1) delay intervals plus the minimum IPG value, and thus establishes a bounded access latency for a half-duplex shared network.