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1. 发明授权

US5485455A Network having secure fast packet switching and guaranteed quality of service 失效
标题翻译：具有安全快速分组交换和保证服务质量的网络
公开(公告)号：US5485455A
公开(公告)日：1996-01-16
申请号：US188238
申请日：1994-01-28
申请人： Kurt Dobbins , Phil Andlauer , Chris Oliver , Tom Parker , Andy Grimes , Bruce Nutbrown , Dan Hullette , Roger Dev , Jason Jeffords
发明人： Kurt Dobbins , Phil Andlauer , Chris Oliver , Tom Parker , Andy Grimes , Bruce Nutbrown , Dan Hullette , Roger Dev , Jason Jeffords
IPC分类号： H04Q3/00 , G06F13/00 , H04L12/46 , H04L12/56 , H04Q11/04
CPC分类号： H04L12/5602 , H04L45/10 , H04L45/36 , H04L49/203 , H04L49/256 , H04Q11/0478 , H04L2012/5619 , H04L2012/5626 , H04L2012/5631 , H04L2012/564 , H04L2012/5645 , H04L2012/5665
摘要： Apparatus and method for establishing "virtual connections" through a packet switched data communications network, the network including a plurality of end systems and switches connected by links. Each end system has a unique physical layer address and each switch has a connection database of valid connections between different ports on the switch and a switching mechanism for establishing temporary connections. Each switch is registered with a connection server such that, prior to transmission of a connectionless datagram from a first end system to a second end system, a path of valid connections through one or more switches from the first end system to the second end system is determined by configuring the connection table of each switch on the path with a connection identifier identified by the physical layer addresses of the first and second end systems, and wherein the data packet remains as a connectionless datagram. In other aspects, an improved method is providing for allocating bandwidth among competing devices requesting access to a bandwidth limited shared resource (e.g., the previously defined switch), and to a search method for making a best path determination through the network based on a number of constraints.
摘要翻译：通过分组交换数据通信网络建立“虚拟连接”的装置和方法，该网络包括通过链路连接的多个终端系统和交换机。每个终端系统都有一个唯一的物理层地址，每个交换机都有一个交换机不同端口之间有效连接的连接数据库，以及建立临时连接的交换机制。每个交换机被注册到连接服务器，使得在将无连接数据报从第一端系统传输到第二端系统之前，通过从第一端系统到第二端系统的一个或多个交换机的有效连接的路径是通过使用由第一和第二端系统的物理层地址识别的连接标识符来配置路径上的每个交换机的连接表来确定，并且其中数据分组保持为无连接数据报。在其他方面，改进的方法是提供在请求接入带宽限制的共享资源（例如，先前定义的交换机）的竞争设备之间分配带宽，以及用于通过网络进行最佳路径确定的搜索方法的约束。

2. 发明授权

US5491694A System and method for allocating a shared resource among competing devices 失效
标题翻译：在竞争设备之间分配共享资源的系统和方法
公开(公告)号：US5491694A
公开(公告)日：1996-02-13
申请号：US318277
申请日：1994-10-05
申请人： Chris Oliver , Dan Hullette
发明人： Chris Oliver , Dan Hullette
IPC分类号： H04Q3/00 , G06F13/00 , H04L12/46 , H04L12/56 , H04Q11/04 , H04J3/02 , H04J3/16
CPC分类号： H04L12/5602 , H04L45/10 , H04L45/36 , H04L49/203 , H04L49/256 , H04Q11/0478 , H04L2012/5619 , H04L2012/5626 , H04L2012/5631 , H04L2012/564 , H04L2012/5645 , H04L2012/5665
摘要： Apparatus and method for establishing "virtual connections" through a packet switched data communications network, the network including a plurality of end systems and switches connected by links. Each end system has a unique physical layer address and each switch has a connection database of valid connections between different ports on the switch and a switching mechanism for establishing temporary connections. Each switch is registered with a connection server such that, prior to transmission of a connectionsless datagram from a first end system to a second end system, a path of valid remains as a connectionless datagram. In other aspects, an improved method is provided for allocating bandwidth among competing devices requesting access to a bandwidth limited shared resource (e.g., the previously defined switch), and to a search method for making a best path determination through the network based on a number of constraints.
摘要翻译：通过分组交换数据通信网络建立“虚拟连接”的装置和方法，该网络包括通过链路连接的多个终端系统和交换机。每个终端系统都有一个唯一的物理层地址，每个交换机都有一个交换机不同端口之间有效连接的连接数据库，以及建立临时连接的交换机制。每个交换机被注册到连接服务器，使得在将无连接数据报从第一端系统传输到第二端系统之前，有效的路径保持为无连接数据报。在其他方面，提供了一种改进的方法，用于在请求接入带宽限制的共享资源（例如，先前定义的交换机）的竞争设备之间分配带宽，以及用于通过网络进行基于号码的最佳路径确定的搜索方法的约束。

3. 发明授权

US5790546A Method of transmitting data packets in a packet switched communications network 失效
标题翻译：在分组交换通信网络中传输数据分组的方法
公开(公告)号：US5790546A
公开(公告)日：1998-08-04
申请号：US567008
申请日：1995-12-04
申请人： Kurt Dobbins , Phil Andlauer , Chris Oliver , Tom Parker , Andy Grimes , Bruce Nutbrown , Dan Hullette , Roger Dev , Jason Jeffords
发明人： Kurt Dobbins , Phil Andlauer , Chris Oliver , Tom Parker , Andy Grimes , Bruce Nutbrown , Dan Hullette , Roger Dev , Jason Jeffords
IPC分类号： H04Q3/00 , G06F13/00 , H04L12/46 , H04L12/56 , H04Q11/04
CPC分类号： H04L12/5602 , H04L45/10 , H04L45/36 , H04L49/203 , H04L49/256 , H04Q11/0478 , H04L2012/5619 , H04L2012/5626 , H04L2012/5631 , H04L2012/564 , H04L2012/5645 , H04L2012/5665
摘要： Apparatus and method for establishing "virtual connections" through a packet switched data communications network, the network including a plurality of end systems and switches connected by links. Each end system has a unique physical layer address and each switch has a connection database of valid connections between different ports on the switch and a switching mechanism for establishing temporary connections. Each switch is registered with a connection server such that, prior to transmission of a connectionless datagram from a first end system to a second end system, a path of valid connections through one or more switches from the first end system to the second end system is determined by configuring the connection table of each switch on the path with a connection identifier identified by the physical layer addresses of the first and second end systems, and wherein the data packet remains as a connectionless datagram. In other aspects, an improved method is providing for allocating bandwidth among competing devices requesting access to a bandwidth limited shared resource (e.g., the previously defined switch), and to a search method for making a best path determination through the network based on a number of constraints.
摘要翻译：通过分组交换数据通信网络建立“虚拟连接”的装置和方法，该网络包括通过链路连接的多个终端系统和交换机。每个终端系统都有一个唯一的物理层地址，每个交换机都有一个交换机不同端口之间有效连接的连接数据库，以及建立临时连接的交换机制。每个交换机被注册到连接服务器，使得在将无连接数据报从第一端系统传输到第二端系统之前，通过从第一端系统到第二端系统的一个或多个交换机的有效连接的路径是通过使用由第一和第二端系统的物理层地址识别的连接标识符来配置路径上的每个交换机的连接表来确定，并且其中数据分组保持为无连接数据报。在其他方面，改进的方法是提供在请求接入带宽限制的共享资源（例如，先前定义的交换机）的竞争设备之间分配带宽，以及用于通过网络进行最佳路径确定的搜索方法的约束。

4. 发明授权

US07720076B2 Distributed connection-oriented services for switched communication networks 有权
标题翻译：用于交换通信网络的分布式面向连接的服务
公开(公告)号：US07720076B2
公开(公告)日：2010-05-18
申请号：US10791655
申请日：2004-03-01
申请人： Kurt Dobbins , Thomas A. Grant , David J. Ruffen , Laura Kane , Theodore Len , Philip Andlauer , David H. Bahi , Kevin Yohe , Brendan Fee , Chris Oliver , David L. Cullerot , Michael Skubisz
发明人： Kurt Dobbins , Thomas A. Grant , David J. Ruffen , Laura Kane , Theodore Len , Philip Andlauer , David H. Bahi , Kevin Yohe , Brendan Fee , Chris Oliver , David L. Cullerot , Michael Skubisz
IPC分类号： H04L12/28
CPC分类号： H04L45/04 , H04L12/18 , H04L12/1877 , H04L12/1886 , H04L12/46 , H04L12/4641 , H04L12/467 , H04L41/0213 , H04L45/16 , H04L45/24 , H04L45/34 , H04L49/201 , H04L49/351 , H04L49/354 , H04L2212/00
摘要： Method and apparatus providing connection-oriented services for packet switched data communications networks. Directory services include distributed discovery of MAC addresses and protocol alias addresses. Topology services include a link state topology exchange among switches, which provides each switch with a complete topology graph of the network. This enables an access switch receiving a data packet to determine a complete path from a source end system to a destination end system. Another service includes resolution of broadcast frames to unicast frames, in order to reduce the amount of broadcast traffic. Policy restrictions may be applied prior to connection setup. Path determination services enable multiple paths from a source to a destination. Connection management includes source routed mapping of connections on the desired path. A distributed call rerouting service is provided wherein if a link on an active path fails, each switch receives a topology change notification and unmaps any connection involving the failed link. A broadcast/unknown service provides restricted flooding of nonresolvable packets. Furthermore, connection-oriented switching is provided based on the source and destination MAC addresses as a connection identifier. Still further, resolution of networks outside the switch domain is enabled by access switches listening for network and server route advertisements and maintaining best routes to said networks and servers. The best route metrics may be combined with best path metrics to determine a path from a first access switch to an egress switch connected to the external network.
摘要翻译：为分组交换数据通信网络提供面向连接的服务的方法和装置。目录服务包括MAC地址和协议别名地址的分布式发现。拓扑服务包括交换机之间的链路状态拓扑交换，为每个交换机提供网络的完整拓扑图。这使得接收数据分组的接入交换机能够确定从源端系统到目的端系统的完整路径。另一种服务包括将广播帧分解成单播帧，以便减少广播流量。在连接设置之前可能会应用策略限制。路径确定服务启用从源到目的地的多条路径。连接管理包括在所需路径上的连接的源路由映射。提供了一种分布式呼叫路由服务，其中如果活动路径上的链路发生故障，则每个交换机接收拓扑变化通知并解除涉及故障链路的任何连接。广播/未知服务提供不可解析包的受限洪泛。此外，基于源和目的地MAC地址作为连接标识符提供面向连接的交换。此外，交换机域外的网络的分辨率由接入交换机监听网络和服务器路由通告以及维护到所述网络和服务器的最佳路由来实现。最佳路由度量可以与最佳路径度量相结合以确定从第一接入交换机到连接到外部网络的出口交换机的路径。

5. 发明授权

US5825772A Distributed connection-oriented services for switched communications networks 失效
标题翻译：用于交换通信网络的分布式面向连接的服务
公开(公告)号：US5825772A
公开(公告)日：1998-10-20
申请号：US626596
申请日：1996-04-02
申请人： Kurt Dobbins , Thomas A. Grant , David J. Ruffen , Laura Kane , Theodore Len , Philip Andlauer , David H. Bahi , Kevin Yohe , Brendan Fee , Chris Oliver , David L. Cullerot , Michael Skubisz
发明人： Kurt Dobbins , Thomas A. Grant , David J. Ruffen , Laura Kane , Theodore Len , Philip Andlauer , David H. Bahi , Kevin Yohe , Brendan Fee , Chris Oliver , David L. Cullerot , Michael Skubisz
IPC分类号： H04L12/18 , H04L12/24 , H04L12/46 , H04L12/56 , H04L12/44
CPC分类号： H04L45/04 , H04L12/1886 , H04L12/46 , H04L12/4641 , H04L12/467 , H04L41/0213 , H04L45/16 , H04L45/24 , H04L45/34 , H04L49/201 , H04L49/354 , H04L12/18 , H04L12/1877 , H04L2212/00 , H04L49/351
摘要： Method and apparatus providing connection-oriented services for packet switched data communications networks. Directory services include distributed discovery of MAC addresses and protocol alias addresses. Topology services include a link state topology exchange among switches, which provides each switch with a complete topology graph of the network. This enables an access switch receiving a data packet to determine a complete path from a source end system to a destination end system. Another service includes resolution of broadcast frames to unicast frames, in order to reduce the amount of broadcast traffic. Policy restrictions may be applied prior to connection setup. Path determination services enable multiple paths from a source to a destination. Connection management includes source routed mapping of connections on the desired path. A distributed call rerouting service is provided wherein if a link on an active path fails, each switch receives a topology change notification and unmaps any connection involving the failed link. A broadcast/unknown service provides restricted flooding of nonresolvable packets. Furthermore, connection-oriented switching is provided based on the source and destination MAC addresses as a connection identifier. Still further, resolution of networks outside the switch domain is enabled by access switches listening for network and server route advertisements and maintaining best routes to said networks and servers. The best route metrics may be combined with best path metrics to determine a path from a first access switch to an egress switch connected to the external network.
摘要翻译：为分组交换数据通信网络提供面向连接的服务的方法和装置。目录服务包括MAC地址和协议别名地址的分布式发现。拓扑服务包括交换机之间的链路状态拓扑交换，为每个交换机提供网络的完整拓扑图。这使得接收数据分组的接入交换机能够确定从源端系统到目的端系统的完整路径。另一种服务包括将广播帧分解成单播帧，以便减少广播流量。在连接设置之前可能会应用策略限制。路径确定服务启用从源到目的地的多条路径。连接管理包括在所需路径上的连接的源路由映射。提供了一种分布式呼叫路由服务，其中如果活动路径上的链路发生故障，则每个交换机接收拓扑变化通知并解除涉及故障链路的任何连接。广播/未知服务提供不可解析包的受限洪泛。此外，基于源和目的地MAC地址作为连接标识符提供面向连接的交换。此外，交换机域外的网络的分辨率由接入交换机监听网络和服务器路由通告以及维护到所述网络和服务器的最佳路由来实现。最佳路由度量可以与最佳路径度量相结合以确定从第一接入交换机到连接到外部网络的出口交换机的路径。

6. 发明授权

US08023515B2 Distributed connection-oriented services for switched communication networks 有权
标题翻译：用于交换通信网络的分布式面向连接的服务
公开(公告)号：US08023515B2
公开(公告)日：2011-09-20
申请号：US12729740
申请日：2010-03-23
申请人： Kurt Dobbins , Thomas A. Grant , David J. Ruffen , Laura Kane , Theodore Len , Philip Andlauer , David H. Bahi , Kevin Yohe , Brendan Fee , Chris Oliver , David L. Cullerot , Michael Skubisz
发明人： Kurt Dobbins , Thomas A. Grant , David J. Ruffen , Laura Kane , Theodore Len , Philip Andlauer , David H. Bahi , Kevin Yohe , Brendan Fee , Chris Oliver , David L. Cullerot , Michael Skubisz
IPC分类号： H04L12/28
CPC分类号： H04L45/04 , H04L12/18 , H04L12/1877 , H04L12/1886 , H04L12/46 , H04L12/4641 , H04L12/467 , H04L41/0213 , H04L45/16 , H04L45/24 , H04L45/34 , H04L49/201 , H04L49/351 , H04L49/354 , H04L2212/00
摘要： Connection-oriented services for packet switched data communications networks are provided, including distributed MAC and protocol alias addresses discovery. Link state topology exchanges provide each switch with network topology graphs to determine paths from source to destination end systems. Broadcast frames are resolved to unicast frames to reduce broadcast traffic. Policy restrictions may be applied prior to connection setup. Connection management includes source-routed mapping of connections on the desired path. Distributed call rerouting is provided so switches receive topology change notifications and unmap failed link connections. Broadcast/unknown services provide non-resolvable packet restricted flooding. Connection-oriented switching is provided based on source and destination MAC addresses. Resolution of networks outside the switch domain is enabled by listening for network and server route advertisements and maintaining best routes to the networks and servers. Route and path metrics may be combined to determine paths from access switches to egress switches connected to the external network.
摘要翻译：提供了用于分组交换数据通信网络的面向连接的服务，包括分布式MAC和协议别名地址发现。链路状态拓扑交换为每个交换机提供网络拓扑图，以确定从源到目的端系统的路径。广播帧被解析为单播帧以减少广播流量。在连接设置之前可能会应用策略限制。连接管理包括所需路径上的连接的源路由映射。提供分布式呼叫重新路由，因此交换机接收拓扑更改通知并取消映射失败的链路连接。广播/未知业务提供不可解析分组限制洪泛。基于源和目的MAC地址提供面向连接的交换。通过监听网络和服务器路由通告并维护到网络和服务器的最佳路由，可以实现对交换机域外网络的解析。可以组合路由和路径度量以确定从接入交换机到连接到外部网络的出口交换机的路径。

7. 发明申请

US20100182934A1 DISTRIBUTED CONNECTION-ORIENTED SERVICES FOR SWITCHED COMMUNICATION NETWORKS 有权
公开(公告)号：US20100182934A1
公开(公告)日：2010-07-22
申请号：US12729740
申请日：2010-03-23
申请人： Kurt Dobbins , Thomas A. Grant , David J. Ruffen , Laura Kane , Theodore Len , Philip Andlauer , David H. Bahi , Kevin Yohe , Brendan Fee , Chris Oliver , David L. Cullerot , Michael Skubisz
发明人： Kurt Dobbins , Thomas A. Grant , David J. Ruffen , Laura Kane , Theodore Len , Philip Andlauer , David H. Bahi , Kevin Yohe , Brendan Fee , Chris Oliver , David L. Cullerot , Michael Skubisz
IPC分类号： H04L12/28
CPC分类号： H04L45/04 , H04L12/18 , H04L12/1877 , H04L12/1886 , H04L12/46 , H04L12/4641 , H04L12/467 , H04L41/0213 , H04L45/16 , H04L45/24 , H04L45/34 , H04L49/201 , H04L49/351 , H04L49/354 , H04L2212/00
摘要： Method and apparatus providing connection-oriented services for packet switched data communications networks. Directory services include distributed discovery of MAC addresses and protocol alias addresses. Topology services include a link state topology exchange among switches, which provides each switch with a complete topology graph of the network. This enables an access switch receiving a data packet to determine a complete path from a source end system to a destination end system. Another service includes resolution of broadcast frames to unicast frames, in order to reduce the amount of broadcast traffic. Policy restrictions may be applied prior to connection setup. Path determination services enable multiple paths from a source to a destination. Connection management includes source routed mapping of connections on the desired path. A distributed call rerouting service is provided wherein if a link on an active path fails, each switch receives a topology change notification and unmaps any connection involving the failed link. A broadcast/unknown service provides restricted flooding of nonresolvable packets. Furthermore, connection-oriented switching is provided based on the source and destination MAC addresses as a connection identifier. Still further, resolution of networks outside the switch domain is enabled by access switches listening for network and server route advertisements and maintaining best routes to said networks and servers. The best route metrics may be combined with best path metrics to determine a path from a first access switch to an egress switch connected to the external network.

8. 发明申请

US20050083949A1 Distributed connection-oriented services for switched communication networks 有权
标题翻译：用于交换通信网络的分布式面向连接的服务
公开(公告)号：US20050083949A1
公开(公告)日：2005-04-21
申请号：US10791655
申请日：2004-03-01
申请人： Kurt Dobbins , Thomas Grant , David Ruffen , Laura Kane , Theodore Len , Philip Andlauer , David Bahi , Kevin Yohe , Brendan Fee , Chris Oliver , David Cullerot , Michael Skubisz
发明人： Kurt Dobbins , Thomas Grant , David Ruffen , Laura Kane , Theodore Len , Philip Andlauer , David Bahi , Kevin Yohe , Brendan Fee , Chris Oliver , David Cullerot , Michael Skubisz
IPC分类号： H04L12/18 , H04L12/24 , H04L12/46 , H04L12/56 , H04L12/28
CPC分类号： H04L45/04 , H04L12/18 , H04L12/1877 , H04L12/1886 , H04L12/46 , H04L12/4641 , H04L12/467 , H04L41/0213 , H04L45/16 , H04L45/24 , H04L45/34 , H04L49/201 , H04L49/351 , H04L49/354 , H04L2212/00
摘要： Method and apparatus providing connection-oriented services for packet switched data communications networks. Directory services include distributed discovery of MAC addresses and protocol alias addresses. Topology services include a link state topology exchange among switches, which provides each switch with a complete topology graph of the network. This enables an access switch receiving a data packet to determine a complete path from a source end system to a destination end system. Another service includes resolution of broadcast frames to unicast frames, in order to reduce the amount of broadcast traffic. Policy restrictions may be applied prior to connection setup. Path determination services enable multiple paths from a source to a destination. Connection management includes source routed mapping of connections on the desired path. A distributed call rerouting service is provided wherein if a link on an active path fails, each switch receives a topology change notification and unmaps any connection involving the failed link. A broadcast/unknown service provides restricted flooding of nonresolvable packets. Furthermore, connection-oriented switching is provided based on the source and destination MAC addresses as a connection identifier. Still further, resolution of networks outside the switch domain is enabled by access switches listening for network and server route advertisements and maintaining best routes to said networks and servers. The best route metrics may be combined with best path metrics to determine a path from a first access switch to an egress switch connected to the external network.
摘要翻译：为分组交换数据通信网络提供面向连接的服务的方法和装置。目录服务包括MAC地址和协议别名地址的分布式发现。拓扑服务包括交换机之间的链路状态拓扑交换，为每个交换机提供网络的完整拓扑图。这使得接收数据分组的接入交换机能够确定从源端系统到目的端系统的完整路径。另一种服务包括将广播帧分解成单播帧，以便减少广播流量。在连接设置之前可能会应用策略限制。路径确定服务启用从源到目的地的多条路径。连接管理包括在所需路径上的连接的源路由映射。提供了一种分布式呼叫路由服务，其中如果活动路径上的链路发生故障，则每个交换机接收拓扑变化通知并解除涉及故障链路的任何连接。广播/未知服务提供不可解析包的受限洪泛。此外，基于源和目的地MAC地址作为连接标识符提供面向连接的交换。此外，交换机域外的网络的分辨率由接入交换机监听网络和服务器路由通告以及维护到所述网络和服务器的最佳路由来实现。最佳路由度量可以与最佳路径度量相结合以确定从第一接入交换机到连接到外部网络的出口交换机的路径。

9. 发明授权

US06711171B1 Distributed connection-oriented services for switched communications networks 有权
标题翻译：用于交换通信网络的分布式面向连接的服务
公开(公告)号：US06711171B1
公开(公告)日：2004-03-23
申请号：US09174991
申请日：1998-10-19
申请人： Kurt Dobbins , Thomas A. Grant , David A. Ruffen , Laura Kane , Theodore Len , Philip Andlauer , David H. Bahi , Kevin Yohe , Brendan Fee , Chris Oliver , David L. Cullerot , Michael Skubisz
发明人： Kurt Dobbins , Thomas A. Grant , David A. Ruffen , Laura Kane , Theodore Len , Philip Andlauer , David H. Bahi , Kevin Yohe , Brendan Fee , Chris Oliver , David L. Cullerot , Michael Skubisz
IPC分类号： H04L1228
CPC分类号： H04L41/0213 , H04L12/1886 , H04L12/4641 , H04L45/04 , H04L45/16 , H04L45/24 , H04L45/34 , H04L49/201 , H04L49/351 , H04L49/354 , H04L2212/00
摘要： Method and apparatus providing connection-oriented services for packet switched data communications networks. Directory services include distributed discovery of MAC addresses and protocol alias addresses. Topology services include a link state topology exchange among switches, which provides each switch with a complete topology graph of the network. This enables an access switch receiving a data packet to determine a complete path from a source end system to a destination end system. Another service includes resolution of broadcast frames to unicast frames, in order to reduce the amount of broadcast traffic. Policy restrictions may be applied prior to connection setup. Path determination services enable multiple paths from a source to a destination. Connection management includes source routed mapping of connections on the desired path. A distributed call rerouting service is provided wherein if a link on an active path fails, each switch receives a topology change notification and unmaps any connection involving the failed link. A broadcast/unknown service provides restricted flooding of nonresolvable packets. Furthermore, connection-oriented switching is provided based on the source and destination MAC addresses as a connection identifier. Still further, resolution of networks outside the switch domain is enabled by access switches listening for network and server route advertisements and maintaining best routes to said networks and servers. The best route metrics may be combined with best path metrics to determine a path from a first access switch to an egress switch connected to the external network.
摘要翻译：为分组交换数据通信网络提供面向连接的服务的方法和装置。目录服务包括MAC地址和协议别名地址的分布式发现。拓扑服务包括交换机之间的链路状态拓扑交换，为每个交换机提供网络的完整拓扑图。这使得接收数据分组的接入交换机能够确定从源端系统到目的端系统的完整路径。另一种服务包括将广播帧分解成单播帧，以便减少广播流量。在连接设置之前可能会应用策略限制。路径确定服务启用从源到目的地的多条路径。连接管理包括在所需路径上的连接的源路由映射。提供了一种分布式呼叫路由服务，其中如果活动路径上的链路发生故障，则每个交换机接收拓扑变化通知并解除涉及故障链路的任何连接。广播/未知服务提供不可解析包的受限洪泛。此外，基于源和目的地MAC地址作为连接标识符提供面向连接的交换。此外，交换机域外的网络的分辨率由接入交换机监听网络和服务器路由通告以及维护到所述网络和服务器的最佳路由来实现。最佳路由度量可以与最佳路径度量相结合以确定从第一接入交换机到连接到外部网络的出口交换机的路径。

10. 发明授权

US5485576A Chassis fault tolerant system management bus architecture for a networking 失效
标题翻译：用于网络机箱的容错系统管理总线架构
公开(公告)号：US5485576A
公开(公告)日：1996-01-16
申请号：US188033
申请日：1994-01-28
申请人： Brendan Fee , Chris Oliver
发明人： Brendan Fee , Chris Oliver
IPC分类号： G06F11/20 , G06F13/00 , H04L12/24 , H04L12/44 , H04L29/14 , H04L12/40
CPC分类号： G06F11/2007 , H04L12/44 , H04L69/40 , H04L12/24 , H04L41/00
摘要： A fault tolerant system management bus architecture for a networking chassis includes a primary path for transmission of system management information and a secondary path for transmission of system management information in the event of failure of the primary path. The primary path includes a first microprocessor controller, coupled between the first system management bus and the processor located on a networking module. The secondary path for transmission of system management information includes a second microprocessor controller system and a dual-port memory. The second microprocessor control system is coupled to the second system management bus and to the dual-port memory. The dual-port memory is also coupled to the processor located on the networking module. The dual-port memory provides the interface between the CPU in the networking module and the second microprocessor control system, thus providing isolation and allowing the memory to be accessible by either processor. Environmental information and module identification information are stored in the dual-port memory. In the event of failure of the primary transmission path, the environmental information and module identification information can be accessed and transmitted over the backup transmission path.
摘要翻译：用于网络机箱的容错系统管理总线架构包括用于传输系统管理信息的主要路径和用于在主路径故障的情况下传输系统管理信息的次路径。主路径包括耦合在第一系统管理总线和位于网络模块上的处理器之间的第一微处理器控制器。用于传输系统管理信息的辅助路径包括第二微处理器控制器系统和双端口存储器。第二微处理器控制系统耦合到第二系统管理总线和双端口存储器。双端口存储器还耦合到位于网络模块上的处理器。双端口存储器提供网络模块中的CPU和第二微处理器控制系统之间的接口，从而提供隔离并允许任一处理器访问存储器。环境信息和模块识别信息存储在双端口存储器中。在主传输路径发生故障的情况下，环境信息和模块识别信息可以通过备份传输路径被访问和传输。

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