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公开(公告)号：US06205481B1
公开(公告)日：2001-03-20
申请号：US09040520
申请日：1998-03-17
IPC分类号： G06F15173
CPC分类号： H04L67/1095 , G06F12/0813 , G06F17/30902 , H04L67/2842 , H04L69/329
摘要： A technique for automatic, transparent, distributed, scalable and robust replication of document copies in a computer network wherein request messages for a particular document follow paths from the clients to a home server that form a routing graph. Client request messages are routed up the graph towards the home server as would normally occur in the absence of caching. However, cache servers are located along the route, and may intercept requests if they can be serviced. In order to be able to service requests in this manner without departing from standard network protocols, the cache server needs to be able to insert a packet filter into the router associated with it, and needs also to proxy for the home server from the perspective of the client. Cache servers cooperate to update cache content by communicating with neighboring caches whenever information is received about invalid cache copies.
摘要翻译： 用于在计算机网络中自动，透明，分布式，可扩展和可靠地复制文档副本的技术，其中用于特定文档的请求消息遵循从客户端到形成路由图的家庭服务器的路径。 客户端请求消息沿着图表路由到家庭服务器，如通常在没有缓存的情况下发生的。 但是，缓存服务器位于路由中，如果可以对其进行维护，可能会拦截请求。 为了能够在不脱离标准网络协议的情况下以这种方式服务请求，缓存服务器需要能够将包过滤器插入到与其相关联的路由器中，并且还需要从家庭服务器的代理 客户端。 当接收到关于无效缓存副本的信息时，缓存服务器通过与相邻缓存进行通信来协作来更新缓存内容。
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公开(公告)号：US06892218B2
公开(公告)日：2005-05-10
申请号：US10662990
申请日：2003-09-15
CPC分类号： G06F9/4862 , H04L29/06 , H04L67/1002 , H04L67/1008 , H04L67/101 , H04L67/1021 , H04L67/16 , H04L67/2814 , H04L67/2819 , H04L67/325 , H04L69/329 , H04L2029/06054
摘要： A technique fulfills service requests in a system of computers that communicate as nodes within a network. The technique involves sending, in response to an initial service request that requests a service provided by a primary server node, a mobile agent from the primary server node to an intermediate node. The mobile agent indicates to the intermediate node that a secondary server node is capable of providing the service. The technique further involves intercepting, at the intermediate node, a subsequent service request sent from a client node to the primary server node, the subsequent service request requesting the service, and sending an instruction from the intermediate node to the secondary server node. The instruction instructs the secondary server node to provide the service. The technique further includes providing, in response to the instruction, the service from the secondary server node to the client node.
摘要翻译： 一种技术在计算机系统中实现服务请求，该系统作为网络中的节点进行通信。 该技术涉及响应于请求由主服务器节点提供的服务的初始服务请求，从主服务器节点向中间节点发送移动代理。 移动代理向中间节点指示辅助服务器节点能够提供服务。 该技术还涉及在中间节点处拦截从客户端节点发送到主服务器节点的后续服务请求，请求服务的后续服务请求，以及从中间节点向辅助服务器节点发送指令。 该指令指示辅助服务器节点提供服务。 该技术还包括响应于该指令提供从次服务器节点到客户端节点的服务。
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公开(公告)号：US06622157B1
公开(公告)日：2003-09-16
申请号：US09404776
申请日：1999-09-24
IPC分类号： G06F1516
CPC分类号： G06F9/4862 , H04L29/06 , H04L67/1002 , H04L67/1008 , H04L67/101 , H04L67/1021 , H04L67/16 , H04L67/2814 , H04L67/2819 , H04L67/325 , H04L69/329 , H04L2029/06054
摘要： A technique fulfills service requests in a system of computers that communicate as nodes within a network. The technique involves sending, in response to an initial service request that requests a service provided by a primary server node, a mobile agent from the primary server node to an intermediate node. The mobile agent indicates to the intermediate node that a secondary server node is capable of providing the service. The technique further involves intercepting, at the intermediate node, a subsequent service request sent from a client node to the primary server node, the subsequent service request requesting the service, and sending an instruction from the intermediate node to the secondary server node. The instruction instructs the secondary server node to provide the service. The technique further includes providing, in response to the instruction, the service from the secondary server node to the client node.
摘要翻译： 一种技术在计算机系统中实现服务请求，该系统作为网络中的节点进行通信。 该技术涉及响应于请求由主服务器节点提供的服务的初始服务请求，从主服务器节点向中间节点发送移动代理。 移动代理向中间节点指示辅助服务器节点能够提供服务。 该技术还涉及在中间节点处拦截从客户端节点发送到主服务器节点的后续服务请求，请求服务的后续服务请求，以及从中间节点向辅助服务器节点发送指令。 该指令指示辅助服务器节点提供服务。 该技术还包括响应于该指令提供从次服务器节点到客户端节点的服务。
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公开(公告)号：US6167438A
公开(公告)日：2000-12-26
申请号：US861934
申请日：1997-05-22
CPC分类号： G06F17/30902 , H04L29/06 , H04L67/1002 , H04L67/1008 , H04L67/101 , H04L67/1014 , H04L67/1095 , H04L67/2814 , H04L67/2842 , H04L67/2852 , H04L67/288 , H04L69/329
摘要： A technique for automatic, transparent, distributed, scalable and robust caching, prefetching, and replication in a computer network that request messages for a particular document follow paths from the clients to a home server that form a routing graph. Client request messages are routed up the graph towards the home server as would normally occur in the absence of caching. However, cache servers are located along the route, and may intercept requests if they can be serviced. In order to be able to service requests in this manner without departing from standard network protocols, the cache server needs to be able to insert a packet filter into the router associated with it, and needs also to proxy for the home server from the perspective of the client. Cache servers may cooperate to service client requests by caching and discarding documents based on its local load, the load on its neighboring caches, attached communication path load, and on document popularity. The cache servers can also implement security schemes and other document transformation features.
摘要翻译： 用于在请求特定文档的消息的计算机网络中进行自动，透明，分布式，可扩展和强大的缓存，预取和复制的技术遵循从客户端到形成路由图的家庭服务器的路径。 客户端请求消息沿着图表路由到家庭服务器，如通常在没有缓存的情况下发生的。 但是，缓存服务器位于路由中，如果可以对其进行维护，可能会拦截请求。 为了能够在不脱离标准网络协议的情况下以这种方式服务请求，缓存服务器需要能够将包过滤器插入到与其相关联的路由器中，并且还需要从家庭服务器的代理 客户端。 缓存服务器可以通过基于其本地负载，其相邻缓存上的负载，附加的通信路径负载以及文档流行度来缓存和丢弃文档来协作来服务客户端请求。 缓存服务器还可以实现安全方案和其他文档转换功能。
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5.发明授权Message redirector with cut-through switch for highly reliable and efficient network traffic processor deployment 失效具有切换开关的消息重定向器，用于高度可靠和高效的网络流量处理器部署公开(公告)号：US06327242B1
公开(公告)日：2001-12-04
申请号：US09040519
申请日：1998-03-17
IPC分类号： G01R3108
CPC分类号： H04L67/2814 , H04L67/2842 , H04L69/40
摘要： A redirector device for enabling highly reliable deployment of in line network traffic server (such as a document cache) or processor (such as a network monitoring and management device). In normal operation, the device selectively redirects traffic at a link layer to the traffic server, by type of message received or client address or application, server address or application, adjacent network node address, or other parameters. However, the device also detects failures of the traffic server, and when appropriate, switches line traffic to bypass the server. This implements a fail safety feature for the server in the sense that a failure causes traffic to be forwarded past the server, thereby enabling the network to remain operational.
摘要翻译： 重定向器设备，用于实现在线网络流量服务器（如文档缓存）或处理器（如网络监控和管理设备）的高可靠性部署。 在正常操作中，设备通过接收到的消息类型或客户端地址或应用，服务器地址或应用，相邻网络节点地址或其他参数来选择性地将链路层的业务重定向到业务服务器。 但是，设备还会检测到流量服务器的故障，并在适当时切换线路流量以绕过服务器。 这在服务器上实现了故障安全功能，因为故障导致流量通过服务器转发，从而使网络保持运行。
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