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1. 发明授权

US6084878A External rules checker interface 失效
标题翻译：外部规则检查器界面
公开(公告)号：US6084878A
公开(公告)日：2000-07-04
申请号：US993715
申请日：1997-12-18
申请人： Ian Crayford , Denise Kerstein , Peter Ka-Fai Chow , Chandan Egbert , Thomas J. Runaldue
发明人： Ian Crayford , Denise Kerstein , Peter Ka-Fai Chow , Chandan Egbert , Thomas J. Runaldue
IPC分类号： H04L12/46 , H04L12/56 , H04L12/28 , H04L12/54
CPC分类号： H04L12/4641 , H04L49/25 , H04L49/3027 , H04L49/351 , H04L49/354
摘要： An interface located on a network switch transmits header information to an external device that makes data forwarding decisions. The interface receives and transmits header information that includes the source and destination address of the data. The external device generates data forwarding information and transmits the information back to the switch via the interface device. The network switch uses the information obtained via the interface and forwards the data packets to the appropriate destination.
摘要翻译：位于网络交换机上的接口将报头信息发送到进行数据转发决策的外部设备。该接口接收并发送包括数据的源地址和目标地址的标题信息。外部设备生成数据转发信息，并通过接口设备将信息发送回交换机。网络交换机使用通过接口获得的信息，并将数据包转发到适当的目的地。

2. 发明授权

US6084877A Network switch port configured for generating an index key for a network switch routing table using a programmable hash function 失效
标题翻译：网络交换机端口被配置为使用可编程散列函数生成用于网络交换机路由表的索引密钥
公开(公告)号：US6084877A
公开(公告)日：2000-07-04
申请号：US992797
申请日：1997-12-18
申请人： Chandan Egbert , Peter Ka-Fai Chow , Denise Kerstein
发明人： Chandan Egbert , Peter Ka-Fai Chow , Denise Kerstein
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04L49/309 , H04L45/745 , H04L49/3009 , H04L49/103 , H04L49/3054 , H04L49/351 , H04L49/40
摘要： A network switch configured for switching data packets across multiple switch ports includes in each network switch port a hash key generator configured to generate a hash key for each network address in a received data packet. Each data packet received by a network switch port includes a source address and a destination address according to IEEE 802.3 protocol. The hash key generator in the corresponding network switch port generates the hash key for the source and destination addresses as the data packet is received by the network switch port, minimizing processing latency in generating the hash key. The hash keys are forwarded to an address table configured to include a programmable number of bin entries, where each bin entry is configured to reference a plurality of address table entries storing the switching logic information for respective network addresses. The hash key, which references a selected one of the bin entries, is used to obtain the switching logic for the corresponding address by accessing the appropriate table entry referenced by the selected bin entry.
摘要翻译：配置用于跨多个交换机端口切换数据分组的网络交换机包括：在每个网络交换机端口中，散列密钥发生器被配置为为接收的数据分组中的每个网络地址生成散列密钥。由网络交换机端口接收的每个数据分组包括根据IEEE 802.3协议的源地址和目的地址。相应的网络交换机端口中的散列密钥生成器在数据包被网络交换机端口接收时生成源和目的地址的散列密钥，从而最小化生成哈希密钥的处理延迟。散列密钥被转发到配置成包括可编程数量的bin条目的地址表，其中每个bin条目被配置为引用存储相应网络地址的切换逻辑信息的多个地址表条目。引用所选择的一个bin条目的哈希密钥用于通过访问由所选择的bin条目引用的适当的表条目来获得相应地址的切换逻辑。

3. 发明授权

US6167054A Method and apparatus providing programmable thresholds for full-duplex flow control in a network switch 失效
标题翻译：为网络交换机中的全双工流量控制提供可编程阈值的方法和装置
公开(公告)号：US6167054A
公开(公告)日：2000-12-26
申请号：US992913
申请日：1997-12-18
申请人： Philip Simmons , Bahadir Erimli , Jinqlih Sang , Peter Ka-Fai Chow , Ian Crayford , Jayant Kadambi , Denise Kerstein , Thomas Jefferson Runaldue
发明人： Philip Simmons , Bahadir Erimli , Jinqlih Sang , Peter Ka-Fai Chow , Ian Crayford , Jayant Kadambi , Denise Kerstein , Thomas Jefferson Runaldue
IPC分类号： H04L13/08 , G06F11/26 , G06F12/00 , G06F13/00 , G06F13/10 , G06F13/16 , G06F13/24 , G06F15/00 , G06F15/16 , G08B5/00 , G11C11/412 , H04B7/14 , H04J3/02 , H04J3/12 , H04J3/22 , H04J3/24 , H04L12/18 , H04L12/24 , H04L12/28 , H04L12/413 , H04L12/44 , H04L12/46 , H04L12/50 , H04L12/54 , H04L12/66 , H04L12/861 , H04L12/863 , H04L12/879 , H04L12/931 , H04L12/933 , H04L12/935 , H04L12/937 , H04L12/939 , H04L12/947 , H04Q3/545 , H04Q11/00
CPC分类号： H04L49/3009 , G06F13/1605 , G06F13/24 , G11C11/412 , H04L12/1863 , H04L12/4641 , H04L12/4645 , H04L12/467 , H04L41/0213 , H04L47/50 , H04L47/6225 , H04L49/103 , H04L49/201 , H04L49/25 , H04L49/255 , H04L49/30 , H04L49/3027 , H04L49/3054 , H04L49/351 , H04L49/354 , H04L49/40 , H04L49/50 , H04L49/552 , H04L49/555 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9063 , H04L49/9073 , H04L49/9078 , H04L49/9084 , H04Q3/54591 , H04Q2213/1316 , H04Q2213/13162
摘要： A network having a shared memory architecture for storing data frames has a set of programmable thresholds that specify when flow control should be initiated on full-duplex network ports. The network switch includes a queue for storing free frame pointers that specify available memory locations in an external memory for storing data frames received from a network station. The network switch takes a frame pointer from a free buffer queue for each received data frame, and stores the received data frame in the location in external memory specified by the frame pointer while a decision making engine within the switch determines the appropriate destination ports. Flow control is initiated based on the number of available frame pointers by transmitting a PAUSE frame having a selected PAUSE interval to a transmitting network station. Specifically, a full-duplex port will output a PAUSE frame having a short, medium, or long programmed pause interval if the free buffer pool of available frame pointers falls below a high, medium, or low programmable threshold, respectively. The switch thus provides flexibility in generating variable-length PAUSE control frames to minimize wasting network bandwidth.
摘要翻译：具有用于存储数据帧的共享存储器架构的网络具有一组可编程阈值，其指定何时应当在全双工网络端口上启动流量控制。网络交换机包括用于存储空闲帧指针的队列，其指定用于存储从网络站接收的数据帧的外部存储器中的可用存储器位置。网络交换机从每个接收到的数据帧的空闲缓冲器队列中获取帧指针，并且将接收到的数据帧存储在由帧指针指定的外部存储器中的位置，同时交换机内的决策引擎确定适当的目的地端口。通过将具有所选暂停间隔的暂停帧发送到发射网络站，基于可用帧指针的数量启动流控制。具体来说，如果可用帧指针的空闲缓冲池分别低于高，中或低可编程阈值，则全双工端口将输出具有短，中或长编程暂停间隔的暂停帧。因此，交换机可以灵活地生成可变长度的PAUSE控制帧，以最大限度地减少浪费的网络带宽。

4. 发明授权

US06223305B1 Method and apparatus for resetting, enabling and freezing a communication device in a diagnostic process 失效
标题翻译：用于在诊断过程中重置，启用和冻结通信设备的方法和装置
公开(公告)号：US06223305B1
公开(公告)日：2001-04-24
申请号：US08993047
申请日：1997-12-18
申请人： Philip Simmons , Denise Kerstein , Thomas J. Runaldue , Chandan Egbert , Bahadir Erimli
发明人： Philip Simmons , Denise Kerstein , Thomas J. Runaldue , Chandan Egbert , Bahadir Erimli
IPC分类号： G06F1126
CPC分类号： H04L49/3009 , G06F13/1605 , G06F13/24 , G11C11/412 , H04L12/1863 , H04L12/4641 , H04L12/4645 , H04L12/467 , H04L41/0213 , H04L47/50 , H04L47/6225 , H04L49/103 , H04L49/201 , H04L49/25 , H04L49/255 , H04L49/30 , H04L49/3027 , H04L49/3054 , H04L49/351 , H04L49/354 , H04L49/40 , H04L49/50 , H04L49/552 , H04L49/555 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9063 , H04L49/9073 , H04L49/9078 , H04L49/9084 , H04Q3/54591 , H04Q2213/1316 , H04Q2213/13162
摘要： A resetting, enabling and freezing system is provided for controlling a communication device in a diagnostic process. A hardware reset of the device may be performed by a host via a reset pin of a PCI interface. A software reset of the device may be provided by setting a reset bit in a command register. To stop operations of the device substantially instantaneously, a freeze mode of diagnostics is provided. The freeze mode may be initiated using hardware or software freezing. To provide the hardware freezing, diagnostic logic is supplied with a freeze signal via a freeze pin of the PCI interface. The software freezing is performed by setting a freeze bit in the command register. To enable a diagnostician to reproduce an event causing an error, an enable/disable mode of diagnostics is carried out. In this mode, elements of the device are disabled one after another in a serial fashion, with a disable signal being passed serially from one element to another. After the elements are disabled, they may be set into a chosen state to recreate a required event.
摘要翻译：提供了一种复位，启用和冻结系统，用于在诊断过程中控制通信设备。设备的硬件复位可以由主机经由PCI接口的复位引脚执行。可以通过在命令寄存器中设置复位位来提供器件的软件复位。为了基本上瞬间停止设备的操作，提供了诊断的冻结模式。可以使用硬件或软件冻结来启动冻结模式。为了提供硬件冻结，诊断逻辑通过PCI接口的冻结引脚提供冻结信号。通过在命令寄存器中设置冻结位来执行软件冻结。为了使诊断程序能够重现导致错误的事件，执行启用/禁用模式的诊断。在这种模式下，器件的元件以串行方式一个接一个地禁用，其中禁用信号从一个元件串行地传递到另一个元件。元素被禁用后，它们可能被设置为选择状态以重新创建所需的事件。

5. 发明授权

US6111875A Apparatus and method for disabling external frame forwarding device for use with a network switch 失效
标题翻译：用于禁用与网络交换机一起使用的外部帧转发设备的装置和方法
公开(公告)号：US6111875A
公开(公告)日：2000-08-29
申请号：US993144
申请日：1997-12-18
申请人： Denise Kerstein , Chandan Egbert , Bahadir Erimli , Thomas J. Runaldue
发明人： Denise Kerstein , Chandan Egbert , Bahadir Erimli , Thomas J. Runaldue
IPC分类号： H04L13/08 , G06F11/26 , G06F12/00 , G06F13/00 , G06F13/10 , G06F13/16 , G06F13/24 , G06F15/00 , G06F15/16 , G08B5/00 , G11C11/412 , H04B7/14 , H04J3/02 , H04J3/12 , H04J3/22 , H04J3/24 , H04L12/18 , H04L12/24 , H04L12/28 , H04L12/413 , H04L12/44 , H04L12/46 , H04L12/50 , H04L12/54 , H04L12/66 , H04L12/861 , H04L12/863 , H04L12/879 , H04L12/931 , H04L12/933 , H04L12/935 , H04L12/937 , H04L12/939 , H04L12/947 , H04Q3/545 , H04Q11/00 , H04L12/56
CPC分类号： H04L49/3009 , G06F13/1605 , G06F13/24 , G11C11/412 , H04L12/4641 , H04L12/5693 , H04L41/0213 , H04L47/6225 , H04L49/103 , H04L49/201 , H04L49/25 , H04L49/255 , H04L49/30 , H04L49/3027 , H04L49/351 , H04L49/354 , H04L49/50 , H04L49/552 , H04L49/555 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9063 , H04L49/9073 , H04L49/9078 , H04L49/9084 , H04Q3/54591 , H04L12/1863 , H04L12/4645 , H04L12/467 , H04L49/3054 , H04L49/40 , H04Q2213/1316 , H04Q2213/13162
摘要： An interface device enables an external device connected to a network switch to be disabled. The interface device receives and transmits data to an external device which makes data forwarding decisions. When a disable signal is received by the network switch, the disable signal is transmitted to the external device over an existing data path. The external device returns an acknowledgement signal over an existing path to the switch. A timer is included as a failsafe mechanism in case the external device does not return an acknowledge signal. The timer waits a predetermined period of time and continues the shut down of the network switch as if the acknowledge signal was received.
摘要翻译：接口设备使得连接到网络交换机的外部设备能够被禁用。接口设备接收并发送数据到外部设备，进行数据转发决策。当网络交换机接收到禁用信号时，禁用信号通过现有数据路径发送到外部设备。外部设备通过现有路径返回到交换机的确认信号。在外部设备未返回确认信号的情况下，包括定时器作为故障保护机制。定时器等待预定的时间段，并继续关闭网络交换机，就像收到确认信号一样。

6. 发明授权

US5953335A Method and apparatus for selectively discarding packets for blocked output queues in the network switch 失效
标题翻译：用于选择性地丢弃网络交换机中阻塞的输出队列的分组的方法和装置
公开(公告)号：US5953335A
公开(公告)日：1999-09-14
申请号：US992428
申请日：1997-12-18
申请人： Bahadir Erimli , Thomas J. Runaldue , Chandan Egbert , Denise Kerstein
发明人： Bahadir Erimli , Thomas J. Runaldue , Chandan Egbert , Denise Kerstein
IPC分类号： H04L12/18 , H04L12/24 , H04L12/56 , H04Q3/545 , H04L12/46 , H04L12/26
CPC分类号： H04L49/103 , H04L12/18 , H04L41/0213 , H04L49/201 , H04L49/255 , H04L49/3027 , H04L49/351 , H04Q3/54591 , H04L12/1868 , H04L49/20 , H04L49/30 , H04L49/3009 , H04L49/3054 , H04L49/354 , H04L49/45 , H04Q2213/1316 , H04Q2213/13162
摘要： An apparatus and method of controlling the transmission of copies of a frame of data from a multiport device, such as a multiport network switch, determines which ones of the ports are designated to transmit a copy of a multicopy frame received at the switch. The switch then determines which of these designated ports are not available to transmit a copy of the frame. The copies are transmitted from those designated ports that are available to transmit a copy of the multicopy frame, while the copies are discarded for those designated ports that are not available to transmit a copy of that multicopy frame.
摘要翻译：控制来自多端口设备（例如多端口网络交换机）的数据帧的副本的传输的装置和方法确定哪些端口被指定来传送在交换机处接收的多复制帧的副本。然后，交换机确定哪些指定的端口不可用于发送帧的副本。从可用于发送多拷贝帧的副本的指定端口发送副本，而对于不可用于传送该多拷贝帧的副本的那些指定端口，丢弃副本。

7. 发明授权

US06178483B1 Method and apparatus for prefetching data read by PCI host 失效
标题翻译：用于预取由PCI主机读取的数据的方法和装置
公开(公告)号：US06178483B1
公开(公告)日：2001-01-23
申请号：US08993045
申请日：1997-12-18
申请人： Thomas J. Runaldue , Denise Kerstein
发明人： Thomas J. Runaldue , Denise Kerstein
IPC分类号： G06F1200
CPC分类号： H04L49/3009 , G06F13/1605 , G06F13/24 , G11C11/412 , H04L12/1863 , H04L12/4641 , H04L12/4645 , H04L12/467 , H04L41/0213 , H04L47/50 , H04L47/6225 , H04L49/103 , H04L49/201 , H04L49/25 , H04L49/255 , H04L49/30 , H04L49/3027 , H04L49/3054 , H04L49/351 , H04L49/354 , H04L49/40 , H04L49/50 , H04L49/552 , H04L49/555 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9063 , H04L49/9073 , H04L49/9078 , H04L49/9084 , H04Q3/54591 , H04Q2213/1316 , H04Q2213/13162
摘要： Write posting buffers and read prefetch buffers are arranged in an integrated multiport switch between a PCI interface and an external memory interface. When a PCI host initiates a PCI transaction to write data from an external memory, the data provided by the PCI host is written into the write posting buffers. Then, the contents of the write posting buffers is transferred to the external memory. The read prefetch buffers are used to temporarily store data prefetched in anticipation of a PCI transaction initiated by the PCI host to read that data from the external memory. When the PCI host initiates the read transaction, the address of the requested data is compared with the address of the prefetched data to transfer the prefetched data to the host if a match is detected. In an auto-prefetch mode, data is automatically prefetched from the external memory when an extension bus port output queue contains a frame pointer for a frame queued for transmission over the PCI interface to the PCI host.
摘要翻译：写入缓冲区和读取预取缓冲区被布置在PCI接口和外部存储器接口之间的集成多端口交换机中。当PCI主机启动PCI事务以从外部存储器写入数据时，由PCI主机提供的数据被写入写入缓冲区。然后，写入缓冲区的内容被传送到外部存储器。读取预取缓冲器用于临时存储预先由PCI主机发起的PCI事务预读的数据，以从外部存储器读取该数据。当PCI主机启动读取事务时，将所请求数据的地址与预取数据的地址进行比较，以便在检测到匹配时将预取数据传输到主机。在自动预取模式下，当扩展总线端口输出队列包含排队等待通过PCI接口传送到PCI主机的帧的帧指针时，数据将自动从外部存储器预取。

8. 发明授权

US6058112A Internal rules checker diagnostic mode 失效
标题翻译：内部规则检查器诊断模式
公开(公告)号：US6058112A
公开(公告)日：2000-05-02
申请号：US992492
申请日：1997-12-18
申请人： Denise Kerstein , Thomas J. Runaldue
发明人： Denise Kerstein , Thomas J. Runaldue
IPC分类号： H04L13/08 , G06F11/26 , G06F12/00 , G06F13/00 , G06F13/10 , G06F13/16 , G06F13/24 , G06F15/00 , G06F15/16 , G08B5/00 , G11C11/412 , H04B7/14 , H04J3/02 , H04J3/12 , H04J3/22 , H04J3/24 , H04L12/18 , H04L12/24 , H04L12/28 , H04L12/413 , H04L12/44 , H04L12/46 , H04L12/50 , H04L12/54 , H04L12/66 , H04L12/861 , H04L12/863 , H04L12/879 , H04L12/931 , H04L12/933 , H04L12/935 , H04L12/937 , H04L12/939 , H04L12/947 , H04Q3/545 , H04Q11/00
CPC分类号： H04L49/3009 , G06F13/1605 , G06F13/24 , G11C11/412 , H04L12/4641 , H04L12/5693 , H04L41/0213 , H04L47/6225 , H04L49/103 , H04L49/201 , H04L49/25 , H04L49/255 , H04L49/30 , H04L49/3027 , H04L49/351 , H04L49/354 , H04L49/50 , H04L49/552 , H04L49/555 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9063 , H04L49/9073 , H04L49/9078 , H04L49/9084 , H04Q3/54591 , H04L12/1863 , H04L12/4645 , H04L12/467 , H04L49/3054 , H04L49/40 , H04Q2213/1316 , H04Q2213/13162
摘要： A network switch data decision making engine is diagnosed while the switch is operating or after an error is detected. The switch receives data from connected stations and sends header information to the decision making engine. The header information is simultaneously transmitted to an external device. The decision making engine generates a data forwarding decision and outputs the decision to the external device. The operation of the decision making engine can then be checked by an external crevice, such as a logic analyzer.
摘要翻译：网络交换机数据决策引擎在交换机正在运行或检测到错误后被诊断。交换机从连接的站接收数据，并将头信息发送给决策引擎。标题信息同时发送到外部设备。决策引擎生成数据转发决策，并将决定输出到外部设备。决策引擎的操作可以由诸如逻辑分析仪之类的外部缝隙来检查。

9. 发明授权

US06192028B1 Method and apparatus providing programmable thresholds for half-duplex flow control in a network switch 失效
标题翻译：为网络交换机中的半双工流量控制提供可编程阈值的方法和装置
公开(公告)号：US06192028B1
公开(公告)日：2001-02-20
申请号：US08992848
申请日：1997-12-18
申请人： Philip Simmons , Bahadir Erimli , Jinqlih Sang , Eric Tsin-Ho Leung , Ian Crayford , Jayant Kadambi , Denise Kerstein , Thomas Jefferson Runaldue
发明人： Philip Simmons , Bahadir Erimli , Jinqlih Sang , Eric Tsin-Ho Leung , Ian Crayford , Jayant Kadambi , Denise Kerstein , Thomas Jefferson Runaldue
IPC分类号： H04L1256
CPC分类号： H04L49/3009 , G06F13/1605 , G06F13/24 , G11C11/412 , H04L12/1863 , H04L12/4641 , H04L12/4645 , H04L12/467 , H04L41/0213 , H04L47/50 , H04L47/6225 , H04L49/103 , H04L49/201 , H04L49/25 , H04L49/255 , H04L49/30 , H04L49/3027 , H04L49/3054 , H04L49/351 , H04L49/354 , H04L49/40 , H04L49/50 , H04L49/552 , H04L49/555 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9063 , H04L49/9073 , H04L49/9078 , H04L49/9084 , H04Q3/54591 , H04Q2213/1316 , H04Q2213/13162
摘要： A network switch having a shared memory architecture for storing data frames has a set of programmable thresholds that specify when flow control should be initiated on a selected network port. The network switch includes a queue for storing free frame pointers, each specifying available memory locations in an external memory for storing data frames received from a network station. The network switch takes a frame pointer from a free buffer queue for each received data frame, and stores the received data frame in the location in external memory specified by the frame pointer while a decision making engine within the switch determines the appropriate destination ports. Flow control is initiated on a half-duplex network port by transmitting a phantom packet to a transmitting network station if the output buffer of a destination port exceeds a programmed high threshold, or if the output buffer of the destination port exceeds a low programmed threshold and the queue of free frame pointers falls below a low programmable threshold. The switch thus provides flexibility in providing selective collisions with transmitting stations to minimize the possibility of network congestion without wasting network bandwidth with unnecessary collisions.
摘要翻译：具有用于存储数据帧的共享存储器架构的网络交换机具有一组可编程阈值，其指定何时应当在所选择的网络端口上启动流量控制。网络交换机包括用于存储空闲帧指针的队列，每个指定用于存储从网络站接收的数据帧的外部存储器中的可用存储器位置。网络交换机从每个接收到的数据帧的空闲缓冲器队列中获取帧指针，并且将接收到的数据帧存储在由帧指针指定的外部存储器中的位置，同时交换机内的决策引擎确定适当的目的地端口。如果目的地端口的输出缓冲区超过编程的高阈值，或者目的端口的输出缓冲区超过低编程阈值，则通过将虚拟分组发送到发射网络站，在半双工网络端口上启动流量控制，空闲帧指针的队列低于低可编程阈值。因此，交换机提供灵活性，以提供与发射站的选择性冲突，以最小化网络拥塞的可能性，而不浪费网络带宽与不必要的冲突。

10. 发明授权

US6151316A Apparatus and method for synthesizing management packets for transmission between a network switch and a host controller 失效
标题翻译：用于合成用于在网络交换机和主机控制器之间传输的管理分组的装置和方法
公开(公告)号：US6151316A
公开(公告)日：2000-11-21
申请号：US992425
申请日：1997-12-18
申请人： Ian Crayford , Denise Kerstein
发明人： Ian Crayford , Denise Kerstein
IPC分类号： G06F5/06 , G06F12/12 , G11C7/10 , G11C11/412 , H04L12/18 , H04L12/24 , H04L12/46 , H04L12/56 , H04L29/06 , H04Q3/545 , H04L12/66
CPC分类号： H04L12/1877 , G06F12/128 , G06F5/06 , G11C11/412 , G11C7/1015 , H04L12/4641 , H04L41/0213 , H04L49/354 , H04L49/90 , H04L49/901 , H04L49/9073 , H04L49/9078 , H04L69/26 , H04Q3/54591 , H04L12/4645 , H04L12/467 , H04L49/201 , H04L49/25 , H04L49/3009 , H04L49/3027 , H04L49/45 , H04Q2213/1316 , H04Q2213/13162
摘要： Management data is supplied to a management agent by a network switch by generating management packets having at least a portion of a received data packet, and management information specifying receive status and network switch response characteristics to the corresponding received data packet. The network switch includes a plurality of network ports, including network traffic ports and one management port for synthesizing the management frame. A network traffic port receiving a data packet generates receive status data specifying the reception status of the received data packet, including the presence of cyclic redundancy check (CRC) errors, frame alignment errors, and receive buffer overflow conditions. The received data packet and received status data are stored in a buffer memory, while switching logic generates port vectors specifying destination output ports and switching logic data specifying the switching logic response to the received data packet. The management port selectively compiles the received status data, the switching logic data, and at least a portion of the received data frame into a management frame, and outputs the synthesized management frame to a management agent according to a media access control (MAC) layer protocol. The generation of management frame provides detailed management information corresponding to characteristics of the received data packet and the corresponding network switch response, independent of the timing at which the data packet was received by the network switch.
摘要翻译：管理数据由网络交换机通过生成具有接收到的数据分组的至少一部分的管理分组以及指定接收状态和网络交换机响应特性的管理信息提供给管理代理。网络交换机包括多个网络端口，包括网络流量端口和用于合成管理帧的一个管理端口。接收数据包的网络流量端口产生指定接收数据包的接收状态的接收状态数据，包括循环冗余校验（CRC）错误，帧对准错误和接收缓冲器溢出条件的存在。接收到的数据包和接收到的状态数据被存储在缓冲存储器中，而切换逻辑产生指定目的地输出端口的端口向量和指定对所接收的数据包的切换逻辑响应的切换逻辑数据。管理端口选择性地将接收的状态数据，切换逻辑数据以及接收的数据帧的至少一部分编译成管理帧，并根据媒体访问控制（MAC）层将合成的管理帧输出到管理代理协议。管理帧的生成提供与接收的数据分组的特性对应的详细管理信息和相应的网络交换机响应，与网络交换机接收到数据分组的定时无关。

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