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1. 发明授权

US06185214B2 Use of code vectors for frame forwarding in a bridge/router 失效
标题翻译：在桥接器/路由器中使用代码矢量进行帧转发
公开(公告)号：US06185214B2
公开(公告)日：2001-02-06
申请号：US08927915
申请日：1997-09-11
申请人： Leonard Schwartz , John A. Flanders , William D. Townsend , David C. Ready
发明人： Leonard Schwartz , John A. Flanders , William D. Townsend , David C. Ready
IPC分类号： H04L1228
CPC分类号： H04L12/5601 , H04L49/30 , H04L49/351 , H04L49/354 , H04L49/602
摘要： A Receive Frame Processor (RFP) in a network bridge/router for receiving frame-characterizing information from other elements of the bridge/router and for generating plural code vectors which result in the selective processing of a received frame in software and/or hardware is provided. The received information is utilized in constructing code vectors representative of how a received frame is to be processed. Further data structures stored in conjunction with the RFP are indexed by the constructed code vectors and indicate whether the frame is to be processed in the RFP hardware, by software in an associated Frame Processor, or both. These data structures also indicate whether the port through which the frame was received is to be blocked to prevent misordering of received frames. If the frame is to be processed in software, the RFP generates a Receive Vector which is provided to the FP and which conveys the frame-characterizing code vectors to the FP. If the frame is to be processed in hardware by the RFP, a Transmit Vector is generated which contains information such as a mask of which transmit ports are to be utilized for forwarding the received frame, and information necessary for reconstructing a header for the received frame, including which encapsulation format is to be utilized for the frame.
摘要翻译：网桥/路由器中的接收帧处理器（RFP），用于从桥接器/路由器的其他元件接收帧表征信息，并产生导致在软件和/或硬件中对接收到的帧进行选择性处理的多个码矢量，提供。接收到的信息用于构造代表如何处理接收的帧的代码矢量。与RFP一起存储的进一步的数据结构由构造的代码向量索引，并通过相关联的帧处理器中的软件或两者在RFP硬件中指示帧是否被处理。这些数据结构还指示是否阻止帧被接收的端口，以防止接收到的帧错位。如果要以软件处理该帧，RFP将生成一个提供给FP的接收向量，并向帧中传送帧特征码向量。如果帧要由RFP在硬件中处理，则生成发送向量，其包含诸如要用于发送接收到的帧的发送端口的掩码的信息，以及用于重建接收到的帧的报头所需的信息，包括哪个封装格式要用于该帧。

2. 发明授权

US5978378A Method and apparatus for VLAN support 失效
标题翻译：支持VLAN的方法和设备
公开(公告)号：US5978378A
公开(公告)日：1999-11-02
申请号：US927641
申请日：1997-09-11
申请人： Stephen L. Van Seters , Ryan T. Ross , Leonard Schwartz , David C. Ready , John A. Flanders , Robert P. Ryan , William D. Townsend
发明人： Stephen L. Van Seters , Ryan T. Ross , Leonard Schwartz , David C. Ready , John A. Flanders , Robert P. Ryan , William D. Townsend
IPC分类号： H04L12/46 , H04L12/28
CPC分类号： H04L12/4645
摘要： Logic circuits are employed in a telecommunications bridge/router device to examine a received frame to determine which VLAN, if any, the frame is associated with. The protocol type, receive port identification, and receive VLAN tag are employed to determine the transmit port identification and transmit VLAN tag. A predefined table indicates which ports within the bridge/router are associated with the VLAN. The frame is excluded from transmission through the ports that are not associated with members of the respective the VLAN.
摘要翻译：电信桥/路由器设备中使用逻辑电路来检查接收到的帧以确定该帧与哪个VLAN相关联。采用协议类型，接收端口标识和接收VLAN标签来确定发送端口标识和发送VLAN标签。一个预定义的表格指出了网桥/路由器中哪些端口与VLAN相关联。通过不与相应VLAN的成员关联的端口将该帧排除在传输之外。

3. 发明授权

US06172980B2 Multiple protocol support 失效
标题翻译：多协议支持
公开(公告)号：US06172980B2
公开(公告)日：2001-01-09
申请号：US08927913
申请日：1997-09-11
申请人： John A. Flanders , Ryan T. Ross , William D. Townsend , Thomas A. Lamaire , Thomas V. Radogna , Brian W. Bailey , Marc D. Sousa
发明人： John A. Flanders , Ryan T. Ross , William D. Townsend , Thomas A. Lamaire , Thomas V. Radogna , Brian W. Bailey , Marc D. Sousa
IPC分类号： H04L1256
CPC分类号： H04L45/00 , H04L12/4625 , H04L29/06 , H04L45/52 , H04L69/22
摘要： A network bridge/router for identifying a data unit to be routed by a network bridge/router, for identifying a protocol associated with the received data unit to be routed, and for carrying out appropriate data unit transfer operations, all in hardware. A Receive Header Processor (RHP) analyzes the destination address of the received data unit, in hardware, for determining if routing or bridging is required. If routing is required, the RHP uses portions of the received data unit header as a compare value against predefined values stored in data structures which provide a protocol ID identifying the protocol of the received data unit and serving as an index to the appropriate microcode handling routine, executed by the RHP, for the data unit. The handling routine causes the RHP to forward data unit identifying information appropriate to the identified protocol and obtained from the received data unit to further hardware-based data unit processing elements. These further data unit processing elements are adaptable to the received data unit cast state (e.g. unicast, multicast, broadcast), bridging and/or routing requirements, and received data unit protocol.
摘要翻译：一种用于识别由网桥/路由器路由的数据单元的网桥/路由器，用于识别与待路由的所接收的数据单元相关联的协议，以及用于执行适当的数据单元传送操作。接收头处理器（RHP）以硬件方式分析接收到的数据单元的目的地地址，以确定是否需要路由或桥接。如果需要路由，则RHP使用接收的数据单元头部的部分作为与存储在数据结构中的预定义值的比较值，该数据结构提供标识接收到的数据单元的协议的协议ID，并且用作适当的微代码处理例程的索引由RHP执行，用于数据单元。处理例程使得RHP将从所接收的数据单元获得的与识别的协议相适应的数据单元识别信息转发到另外的基于硬件的数据单元处理单元。这些另外的数据单元处理元件适应于所接收的数据单元投射状态（例如单播，多播，广播），桥接和/或路由需求以及接收的数据单元协议。

4. 发明授权

US6115379A Unicast, multicast, and broadcast method and apparatus 失效
标题翻译：单播，组播和广播方法和装置
公开(公告)号：US6115379A
公开(公告)日：2000-09-05
申请号：US927914
申请日：1997-09-11
申请人： John A. Flanders , Ryan T. Ross , William D. Townsend , Thomas A. Lemaire , Thomas V. Radogna , Robert A. Ciampa , Brian W. Bailey
发明人： John A. Flanders , Ryan T. Ross , William D. Townsend , Thomas A. Lemaire , Thomas V. Radogna , Robert A. Ciampa , Brian W. Bailey
IPC分类号： H04L12/58 , H04L12/56
CPC分类号： H04L12/1854
摘要： At least a portion of the data units in a bridge/router are processed by logic circuits according to cast type. The cast type, source address and destination address of an incoming data unit are determined by examining the header. For a unicast data unit, the source address and destination address are employed to obtain a transmit port indicator from memory, and the unicast data unit is directed to the port indicated by the transmit port indicator. For a non-unicast data unit, the source address and destination address are employed to obtain a first port mask that indicates valid ports for receipt of the data unit and a second port mask that indicates valid ports for transmission of the data unit from memory. The first and second port masks are combined to generate a third port mask, and the non-unicast data unit is directed to the ports indicated by the third port mask.
摘要翻译：桥/路由器中的数据单元的至少一部分根据铸造类型被逻辑电路处理。通过检查报头来确定输入数据单元的投射类型，源地址和目的地址。对于单播数据单元，使用源地址和目的地地址来从存储器获取发送端口指示符，并且单播数据单元被引导到由发送端口指示符指示的端口。对于非单播数据单元，使用源地址和目的地地址来获得指示用于接收数据单元的有效端口的第一端口掩码和指示用于从存储器传输数据单元的有效端口的第二端口掩码。第一和第二端口掩码被组合以产生第三端口掩码，并且非单播数据单元被引导到由第三端口掩码指示的端口。

5. 发明授权

US10094052B1 Fire retardant material and method of making the same 有权
公开(公告)号：US10094052B1
公开(公告)日：2018-10-09
申请号：US12868809
申请日：2010-08-26
申请人： Jung-Huang (Jason) Tsai , Elizabeth Clagg , Mitchael C. Freeman , Andrew M. Allen , Paige Johnson , William D. Townsend
发明人： Jung-Huang (Jason) Tsai , Elizabeth Clagg , Mitchael C. Freeman , Andrew M. Allen , Paige Johnson , William D. Townsend
IPC分类号： D03D15/12 , D02G3/44
摘要： This invention is directed to a light weight fire resistant material. The material is constructed of a plurality of oxidized polyacrylonitrile (OPAN) fibers. The fire resistant material having a weight in the range of less than about 9.0 oz/yd2, an Arc Thermal Performance Value of greater than about 8.0 and a Thermal Protection Performance of greater than about 13.0.

6. 发明授权

US6041058A Hardware filtering method and apparatus 失效
标题翻译：硬件过滤方法及装置
公开(公告)号：US6041058A
公开(公告)日：2000-03-21
申请号：US928882
申请日：1997-09-11
申请人： John A. Flanders , David C. Ready , Steven Van Seters , Leonard Schwartz , William D. Townsend
发明人： John A. Flanders , David C. Ready , Steven Van Seters , Leonard Schwartz , William D. Townsend
IPC分类号： H04L12/46 , H04J3/02 , H04J3/24
CPC分类号： H04L12/4625
摘要： At least a portion of the data units in a bridge/router device are analyzed for purposes of filtering by employing high speed logic circuits. A data unit is analyzed by such logic circuits by examining the header portion of the data unit, employing information obtained from the header portion to designate possible output ports for transmission of the data unit, examining a predefined per-port filter enable indicator to determine whether filtering is to be applied to the data unit, and applying filtering for each respective port for which the per-port filter enable indicator indicates that filtering is to be applied. Filtering is also implemented with logic circuits and executed at high speed. Filtering may be executed based on MAC address group, port group, combination MAC address and port group, protocol type, and non-unicast traffic frequency. Data units that cannot be analyzed by the logic circuits are analyzed by software.
摘要翻译：为了通过采用高速逻辑电路进行滤波，分析桥/路由器设备中的数据单元的至少一部分。这样的逻辑电路通过检查数据单元的报头部分来分析数据单元，采用从报头部分获得的信息来指定用于传输数据单元的可能的输出端口，检查预定义的每端口滤波器使能指示符以确定是否将过滤应用于数据单元，并对每个端口过滤器使能指示符指示要应用过滤的每个相应端口应用过滤。滤波也用逻辑电路实现，并以高速执行。可以根据MAC地址组，端口组，组合MAC地址和端口组，协议类型和非单播流量来执行过滤。逻辑电路无法分析的数据单元由软件分析。

7. 发明授权

US06205149B1 Quality of service control mechanism and apparatus 失效
标题翻译：服务质量控制机制和设备
公开(公告)号：US06205149B1
公开(公告)日：2001-03-20
申请号：US08927650
申请日：1997-09-11
申请人： Thomas A. Lemaire , Paul J. Giacobbe , John A. Flanders , David Lipschutz , Leonard Schwartz , David C. Ready , William D. Townsend
发明人： Thomas A. Lemaire , Paul J. Giacobbe , John A. Flanders , David Lipschutz , Leonard Schwartz , David C. Ready , William D. Townsend
IPC分类号： H04L1228
CPC分类号： H04L12/40163 , H04L12/40032 , H04L12/413 , H04L12/4625 , H04L29/06 , H04L45/742 , H04L47/24 , H04L49/90 , H04L69/18 , H04L69/22
摘要： Quality of Service (“QoS”) variables for predetermined protocol Type data units are stored in a cache memory. For data units that are associated with a flow, thirteen bytes selected out of the Internet Protocol (“IP”) header are employed as at least a portion of a key to perform a cache lookup to obtain at least one Quality of Service variable from the cache. Both routing and QoS information may be stored in the cache for retrieval upon a single lookup operation.
摘要翻译：用于预定协议的服务质量（“QoS”）变量类型数据单元存储在高速缓冲存储器中。对于与流相关联的数据单元，从因特网协议（“IP”）头部选择的13个字节被用作密钥的至少一部分以执行高速缓存查找，以从所述至少一个服务质量变量获得至少一个服务质量变量缓存。路由和QoS信息都可以存储在缓存中以便在单次查找操作时进行检索。

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