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1. 发明授权

US06343330B1 Arrangement for preventing looping of explorer frames in a transparent bridging domain having multiple entry points 有权
标题翻译：用于防止具有多个入口点的透明桥接域中的资源管理器帧的循环的布置
公开(公告)号：US06343330B1
公开(公告)日：2002-01-29
申请号：US09318432
申请日：1999-05-25
申请人： Arun Girdharilal Khanna , Arunkumar Bhushappagala Thippeswamy , Frank Gerard Bordonaro , Patricia Ann Webster , Scott Allen Bales , Uwe Sellentin
发明人： Arun Girdharilal Khanna , Arunkumar Bhushappagala Thippeswamy , Frank Gerard Bordonaro , Patricia Ann Webster , Scott Allen Bales , Uwe Sellentin
IPC分类号： G06F1516
CPC分类号： H04L45/34 , H04L12/4625 , H04L45/04 , H04L45/26
摘要： A transparently-bridged wide area network connecting Ethernet/IEEE 802.3-based local area networks uses redundant proxy devices on each LAN for internetwork communications. The proxy devices, implemented as data link switching (DLSw) devices, prevent looping of traffic such as explorer frames by sharing their MAC addresses to enable the proxy devices to recognize data packets from another proxy device. Incoming explorer frames from the wide area network are modified by performing an address substitution, where the source address in a received explorer frame is replaced with the address of the local proxy device. The proxy device then outputs the modified explorer frame onto the local area network. Any other proxy device on that same local network will then be able to detect the modified explorer frame as a frame forwarded by another proxy device, as opposed to a data frame from an end station on that local area network. Hence, redundant DLSw-type proxy devices may be implemented on a local area network while maintaining a stable and a robust communications system.
摘要翻译：连接以太网/ IEEE 802.3的局域网的透明桥接广域网在每个LAN上使用冗余代理设备进行互联网通信。实现为数据链路交换（DLSw）设备的代理设备通过共享其MAC地址来防止诸如资源管理器帧之类的流量循环，以使得代理设备能够识别来自另一代理设备的数据分组。通过执行地址替换来修改来自广域网的传入浏览器帧，其中接收的资源管理器帧中的源地址被替换为本地代理设备的地址。代理设备然后将修改的资源管理器帧输出到局域网上。然后，同一个本地网络上的任何其他代理设备将能够将修改的资源管理器框架检测为由另一个代理设备转发的帧，而不是该局域网上终端站的数据帧。因此，可以在局域网上实现冗余的DLSw型代理设备，同时保持稳定和健壮的通信系统。

2. 发明授权

US6061728A Arrangement for controlling network proxy device traffic on a transparently-bridged local area network using a master proxy device 有权
标题翻译：用于使用主代理设备在透明桥接的局域网上控制网络代理设备流量的布置
公开(公告)号：US6061728A
公开(公告)日：2000-05-09
申请号：US318431
申请日：1999-05-25
申请人： Andrew Joseph Mead , Frank Gerard Bordonaro , John Lautmann , Scott Allen Bales , Uwe Sellentin
发明人： Andrew Joseph Mead , Frank Gerard Bordonaro , John Lautmann , Scott Allen Bales , Uwe Sellentin
IPC分类号： G06F13/00
CPC分类号： H04L12/462
摘要： A transparently-bridged wide area network connecting Ethernet/IEEE 802.3-based local area networks uses redundant proxy devices on each LAN for internetwork communications. The proxy devices on a given LAN, implemented as data link switching (DLSw) devices, identify amongst each other a master proxy device for mediating services to be provided to an end station on the local area network. Each proxy device connected to the local area network sends a request to the identified master proxy device in response to detecting a frame transmitted by an end station on the local area network, for permission to establish a circuit connection for transfer of the frame via a wide area network. The master proxy device, based on prescribed criteria, selects one of the proxy devices for transferring the frame, and sends a grant response to the selected proxy device. The master proxy device sends an "inuse" response as a denial response to the other proxy devices indicating the corresponding request has been denied, thereby avoiding contention for proxy services. Databases within the proxy devices track the request, grants, and denials to minimize generation of repeated requests. The inventory of granted requests may also be modified based on failures detected within the master proxy device, or any proxy device having received grants. Hence, redundant DLSw-type proxy devices may be implemented on a local area network while maintaining a stable and a robust communications system.
摘要翻译：连接以太网/ IEEE 802.3的局域网的透明桥接广域网在每个LAN上使用冗余代理设备进行互联网通信。实现为数据链路交换（DLSw）设备的给定LAN上的代理设备在彼此之间识别主代理设备，用于中介要提供给局域网上终端站的服务。连接到局域网的每个代理设备响应于检测到由局域网上的终端站发送的帧来向所识别的主代理设备发送请求，以允许建立用于经由宽的传输帧的电路连接区域网络。主代理设备基于规定的标准，选择一个代理设备来传送该帧，并向所选择的代理设备发送授权响应。主代理设备发送“使用”响应作为对其他代理设备的拒绝响应，指示相应的请求已经被拒绝，从而避免了代理服务的争用。代理设备内的数据库跟踪请求，授予和拒绝以最小化重复请求的生成。授权请求的清单也可以基于在主代理设备或已经接收到授权的任何代理设备中检测到的故障来修改。因此，可以在局域网上实现冗余的DLSw型代理设备，同时保持稳定和健壮的通信系统。

3. 发明授权

US06493706B1 Arrangement for enhancing weighted element searches in dynamically balanced trees 有权
标题翻译：在动态平衡树中增强加权元素搜索的安排
公开(公告)号：US06493706B1
公开(公告)日：2002-12-10
申请号：US09427033
申请日：1999-10-26
申请人： Andrew Joseph Mead , Scott Allen Bales
发明人： Andrew Joseph Mead , Scott Allen Bales
IPC分类号： G06F1730
CPC分类号： G06F17/30961 , Y10S707/99933 , Y10S707/99935 , Y10S707/99936 , Y10S707/99942 , Y10S707/99943
摘要： A processor-based system configured for searching in dynamically balanced trees is configured for linking the most often-searched elements of the tree to optimize search performance. Data elements include pointers for a tree-based index ordering and a doubly-linked list based index ordering. A background process links the most often-searched elements according to the linked list ordering and maintains the linked list ordering by first determining those elements having the highest importance values, defined as a number of times an element is successfully searched relative to aging or decay function. The linked list ordering is then arranged based on descending importance values. Each element also includes a go-to-tree flag, indicating to a search engine the point at which it is no longer beneficial to continue searching according to the doubly-linked list ordering. Hence, a search engine that begins searching the elements according to the doubly-linked list ordering will begin searching of the tree structure for the specified key entry in response to detecting an element having a go-to-tree flag set to true. Hence, the doubly-linked list may optimize search performance when the most often-searched elements may be deep within a tree, while insuring that unnecessary overhead is not introduced into the search routine.
摘要翻译：配置用于在动态平衡树中搜索的基于处理器的系统被配置用于链接最常搜索的树的元素以优化搜索性能。数据元素包括用于基于树的索引排序的指针和基于双链表的索引排序。后台进程根据链表排序来链接最常搜索的元素，并通过首先确定具有最高重要性值的元素来定义链接列表排序，该元素定义为元素相对于老化或衰减函数成功搜索的次数。然后基于下降的重要性值来排列链表。每个元素还包括一个转到树标志，向搜索引擎指示根据双向链表排序继续搜索不再有益的点。因此，响应于检测到具有设置为true的转到树标志的元素，开始根据双向链表列表排序搜索元素的搜索引擎将开始搜索指定密钥条目的树结构。因此，当最常搜索的元素可能深入树中时，双向链表可以优化搜索性能，同时确保不必要的开销不被引入到搜索例程中。

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