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1.发明授权Using context labels to scale MAC tables on computer network edge devices 有权使用上下文标签缩放计算机网络边缘设备上的MAC表公开(公告)号：US08908527B2
公开(公告)日：2014-12-09
申请号：US13018125
申请日：2011-01-31
申请人： Sami Boutros , Yuri Tsier , Muthurajah Sivabalan , Pradosh Mohapatra , Clarence Filsfils , John H. W. Bettink , Luca Martini
发明人： Sami Boutros , Yuri Tsier , Muthurajah Sivabalan , Pradosh Mohapatra , Clarence Filsfils , John H. W. Bettink , Luca Martini
CPC分类号： H04L45/502 , H04L12/18 , H04L45/04
摘要： In one embodiment, an access component of a local network edge device receives traffic, and generates a frame for the traffic that includes a remote context label that identifies an access component of the remote network edge device to which the traffic is to be forwarded upon arrival at the remote network edge device, and a virtual circuit label corresponding to a particular virtual service of the traffic. The local network edge device forwards the frame towards the remote network edge device. In another embodiment, the frame may be received at a core component of the remote network edge device, an in response to the remote context label identifying an access component of the remote network edge device, forwarded to the access component, which determines the particular virtual service, and forwards the traffic from the frame out the access component towards an endpoint for the traffic.
摘要翻译： 在一个实施例中，本地网络边缘设备的接入组件接收业务，并且生成包括远程上下文标签的业务的帧，所述远程上下文标签识别到达所述业务将被转发到的远程网络边缘设备的接入组件 在远程网络边缘设备处，以及对应于业务的特定虚拟服务的虚拟电路标签。 本地网络边缘设备将帧转发到远程网络边缘设备。 在另一个实施例中，可以在远程网络边缘设备的核心组件处接收帧，响应于远程上下文标签识别远程网络边缘设备的接入组件，转发到接入组件，其确定特定虚拟 服务，并将来自帧的流量从访问组件转发到流量的端点。
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2.发明申请USING CONTEXT LABELS TO SCALE MAC TABLES ON COMPUTER NETWORK EDGE DEVICES 有权使用上下文标签在计算机网络边缘设备上规模MAC表公开(公告)号：US20120198064A1
公开(公告)日：2012-08-02
申请号：US13018125
申请日：2011-01-31
申请人： Sami Boutros , Yuri Tsier , Muthurajah Sivabalan , Pradosh Mohapatra , Clarence Filsfils , John H. W. Bettink , Luca Martini
发明人： Sami Boutros , Yuri Tsier , Muthurajah Sivabalan , Pradosh Mohapatra , Clarence Filsfils , John H. W. Bettink , Luca Martini
IPC分类号： G06F15/173
CPC分类号： H04L45/502 , H04L12/18 , H04L45/04
摘要： In one embodiment, an access component of a local network edge device receives traffic, and generates a frame for the traffic that includes a remote context label that identifies an access component of the remote network edge device to which the traffic is to be forwarded upon arrival at the remote network edge device, and a virtual circuit label corresponding to a particular virtual service of the traffic. The local network edge device forwards the frame towards the remote network edge device. In another embodiment, the frame may be received at a core component of the remote network edge device, an in response to the remote context label identifying an access component of the remote network edge device, forwarded to the access component, which determines the particular virtual service, and forwards the traffic from the frame out the access component towards an endpoint for the traffic.
摘要翻译： 在一个实施例中，本地网络边缘设备的接入组件接收业务，并且生成包括远程上下文标签的业务的帧，所述远程上下文标签识别到达所述业务将被转发到的远程网络边缘设备的接入组件 在远程网络边缘设备处，以及对应于业务的特定虚拟服务的虚拟电路标签。 本地网络边缘设备将帧转发到远程网络边缘设备。 在另一个实施例中，可以在远程网络边缘设备的核心组件处接收帧，响应于远程上下文标签识别远程网络边缘设备的接入组件，转发到接入组件，其确定特定虚拟 服务，并将来自帧的流量从访问组件转发到流量的端点。
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3.发明授权公开(公告)号：US08004964B2
公开(公告)日：2011-08-23
申请号：US12383359
申请日：2009-03-23
IPC分类号： G01R31/08
CPC分类号： H04L45/00 , H04L43/0811 , H04L45/22 , H04L45/28 , H04L45/50
摘要： In one embodiment, a protected switching provider edge (S-PE) and a backup S-PE may be operated, where the protected S-PE has at least one multi-segment pseudowire (MS-PW) and is between a first and second provider edge (PE) on the MS-PW. To protect the protected S-PE, the first and second PE may be informed of the backup S-PE and a backup label to reach the second and first PE, respectively, via the backup S-PE to remain on the MS-PW. Upon detecting loss of connectivity with the protected S-PE, the first and/or second PE may forward packets of the MS-PW to the backup S-PE with the corresponding backup label to reach the second or first PE, respectively, on the MS-PW.
摘要翻译： 在一个实施例中，可以操作受保护的交换机提供商边缘（S-PE）和备份S-PE，其中受保护的S-PE具有至少一个多段伪线（MS-PW），并且处于第一和第二 提供商边缘（PE）在MS-PW上。 为了保护受保护的S-PE，可以通过备份S-PE将第一和第二PE通知备份S-PE和备份标签分别到达第二个和第一个PE，以保留在MS-PW上。 在检测到与受保护的S-PE的连通性损失时，第一和/或第二PE可以将MS-PW的分组转发到具有相应备份标签的备份S-PE，以分别到达第二或第一PE MS-PW。
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4.发明申请公开(公告)号：US20100238795A1
公开(公告)日：2010-09-23
申请号：US12383359
申请日：2009-03-23
IPC分类号： H04L12/24
CPC分类号： H04L45/00 , H04L43/0811 , H04L45/22 , H04L45/28 , H04L45/50
摘要： In one embodiment, a protected switching provider edge (S-PE) and a backup S-PE may be operated, where the protected S-PE has at least one multi-segment pseudowire (MS-PW) and is between a first and second provider edge (PE) on the MS-PW. To protect the protected S-PE, the first and second PE may be informed of the backup S-PE and a backup label to reach the second and first PE, respectively, via the backup S-PE to remain on the MS-PW. Upon detecting loss of connectivity with the protected S-PE, the first and/or second PE may forward packets of the MS-PW to the backup S-PE with the corresponding backup label to reach the second or first PE, respectively, on the MS-PW.
摘要翻译： 在一个实施例中，可以操作受保护的交换机提供商边缘（S-PE）和备份S-PE，其中受保护的S-PE具有至少一个多段伪线（MS-PW），并且处于第一和第二 提供商边缘（PE）在MS-PW上。 为了保护受保护的S-PE，可以通过备份S-PE将第一和第二PE通知备份S-PE和备份标签分别到达第二个和第一个PE，以保留在MS-PW上。 在检测到与受保护的S-PE的连通性损失时，第一和/或第二PE可以将MS-PW的分组转发到具有相应备份标签的备份S-PE，以分别到达第二或第一PE MS-PW。
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公开(公告)号：US20110182189A1
公开(公告)日：2011-07-28
申请号：US12657676
申请日：2010-01-25
申请人： Luca Martini , George Swallow
发明人： Luca Martini , George Swallow
IPC分类号： H04L12/26
CPC分类号： H04L45/50 , H04L45/245 , H04L45/68 , Y02D50/30
摘要： In one embodiment, a method includes generating an aggregated pseudowire status message at a first network device in a Multi-Protocol Label Switching (MPLS) network, transmitting the aggregated pseudowire status message to a second network device on a Label Switched Path (LSP) extending between the first and second network devices in the MPLS network, and establishing at the first network device, an aggregated pseudowire status session with the second network device upon receiving a response to the aggregated pseudowire status message on the LSP. The aggregated pseudowire status message configured to verify a current status of pseudowires on the LSP. An apparatus is also disclosed.
摘要翻译： 在一个实施例中，一种方法包括在多协议标签交换（MPLS）网络中的第一网络设备处生成聚合伪线状态消息，将聚合伪线状态消息发送到扩展标签交换路径（LSP）上的第二网络设备 在所述MPLS网络中的所述第一和第二网络设备之间，以及在所述第一网络设备上建立与所述第二网络设备的聚合伪线状态会话，以在所述LSP上收到对所述聚合伪线状态消息的响应。 聚合伪线状态消息被配置为验证LSP上的伪线的当前状态。 还公开了一种装置。
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公开(公告)号：US07773594B2
公开(公告)日：2010-08-10
申请号：US11776200
申请日：2007-07-11
申请人： Rajiv Asati , John Chapman , James Neil Guichard , Luca Martini
发明人： Rajiv Asati , John Chapman , James Neil Guichard , Luca Martini
IPC分类号： H04L12/28
CPC分类号： H04L12/2801 , H04L12/4633 , H04L12/4641 , H04L45/507 , H04L45/68 , H04N21/6118 , H04N21/6168
摘要： In one embodiment, label distribution sessions are established between a Modular Cable Modem Termination System (M-CMTS) core and one or more remote PHYs. The label distribution sessions facilitate association of labels with either Radio Frequency (RF) channels or groups of the RF channels that extend from the remote PHYs to one or more cable modems. The labels are then used to facilitate communications between the M-CMTS core and the remote PHYs over a MultiProtocol Label Switching (MPLS) network.
摘要翻译： 在一个实施例中，在模块化有线调制解调器终端系统（M-CMTS）核心和一个或多个远程PHY之间建立标签分发会话。 标签分配会话便于标签与从远程PHY延伸到一个或多个电缆调制解调器的射频（RF）信道或RF信道的组的关联。 然后，标签用于通过多协议标签交换（MPLS）网络促进M-CMTS核心和远程PHY之间的通信。
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公开(公告)号：US20090041038A1
公开(公告)日：2009-02-12
申请号：US11834663
申请日：2007-08-06
IPC分类号： H04L12/28
CPC分类号： H04L12/4641 , H04L45/50
摘要： In one embodiment, a method includes receiving a data link layer packet, such as an Ethernet packet, at a local provider edge node in a provider network from a first customer edge node of multiple customer edge nodes connected directly to the local provider edge node. A tunnel data packet for a particular tunneling protocol is generated. The tunnel data packet includes tunnel data that indicates tunnel termination at a different provider edge in the provider network. The tunnel data packet also includes customer identifier data and the data link layer packet. The customer identifier data uniquely indicates a customer associated with the first customer edge node. The tunnel data packet is sent over the provider network.
摘要翻译： 在一个实施例中，一种方法包括从提供商网络中的本地提供商边缘节点接收来自直接连接到本地提供商边缘节点的多个客户边缘节点的第一客户边缘节点的数据链路层分组，诸如以太网分组。 生成用于特定隧道协议的隧道数据包。 隧道数据包包括指示在提供商网络中的不同提供商边缘处的隧道终止的隧道数据。 隧道数据分组还包括客户标识符数据和数据链路层分组。 客户标识符数据唯一地指示与第一客户边缘节点相关联的顾客。 隧道数据包通过提供商网络发送。
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8.发明申请Inter-autonomous-system virtual private network with autodiscovery and connection signaling 有权具有自动发现和连接信令的自治系统虚拟专用网公开(公告)号：US20060182122A1
公开(公告)日：2006-08-17
申请号：US11216963
申请日：2005-08-31
申请人： Bruce Davie , Luca Martini , Eric Rosen
发明人： Bruce Davie , Luca Martini , Eric Rosen
IPC分类号： H04L12/28
CPC分类号： H04L12/2854
摘要： A layer-2 virtual-private-network (L2-VPN) service with automatic discovery and connection establishment is provided within a wide-area, multiple-autonomous-system (AS) network according to one of two approaches. In the first approach, inter-AS tunnels are used to connect pairs of provider edge (PE) routers of different ASes, and the PE routers then establish signaling connections to each other which are used to create pseudowires that implement the layer-2 connectivity. A second approach utilizes so-called “pseudowire switching” in which separate pseudowires are created within each AS and between ASes, and then the separate pseudowires are stitched together to form end-to-end connections. The first approach has the benefit of transparent operation provided by the tunnel, while the second approach requires fewer inter-AS signaling connections.
摘要翻译： 根据两种方法之一，在广域，多自治系统（AS）网络内提供具有自动发现和连接建立的二层虚拟专用网（L2-VPN）业务。 在第一种方法中，跨域隧道用于连接不同AS的提供商边缘（PE）路由器对，并且PE路由器然后建立彼此的信令连接，用于创建实现第二层连接的伪线。 第二种方法利用所谓的“伪线切换”，其中在每个AS内和AS之间创建单独的伪线，然后将分离的伪线缝合在一起以形成端到端连接。 第一种方法具有由隧道提供的透明操作的优点，而第二种方法需要较少的AS间信令连接。
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公开(公告)号：US08804496B2
公开(公告)日：2014-08-12
申请号：US13315948
申请日：2011-12-09
申请人： Jim Guichard , Luca Martini , Keyur Patel , Thomas David Nadeau
发明人： Jim Guichard , Luca Martini , Keyur Patel , Thomas David Nadeau
IPC分类号： G01R31/08
CPC分类号： H04L45/04 , H04L1/22 , H04L45/22 , H04L45/28 , H04L45/42 , H04L45/44 , H04L45/50 , H04L45/68
摘要： The protection of multi-segment pseudowires by utilizing backup paths is disclosed herein. Disclosed embodiments include methods that establish at least one backup path for multi-segment pseudowires, the establishing being performed prior to detection of failure in the primary path. Upon detecting a path failure, the detected failure is signaled to the head-end, a backup path is chosen, and reachability information associated with the chosen backup path is signaled across the backup path before reverse traffic is switched to the backup path. In other disclosed embodiments, apparatus are configured to establish, prior to detection of failure in the primary path, at least one backup path for the multi-segment pseudowire.
摘要翻译： 本文公开了通过利用备用路径保护多段伪线。 公开的实施例包括为多段伪线建立至少一个备用路径的方法，该建立是在检测到主路径中的故障之前执行的。 在检测到路径故障时，将检测到的故障信号发送到前端，选择备份路径，并且在将反向流量切换到备份路径之前通过备份路径发信号通知所选备份路径的可达性信息。 在其他公开的实施例中，设备被配置为在检测到主路径中的故障之前建立用于多段伪线的至少一个备用路径。
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公开(公告)号：US08619598B2
公开(公告)日：2013-12-31
申请号：US12657676
申请日：2010-01-25
申请人： Luca Martini , George Swallow
发明人： Luca Martini , George Swallow
IPC分类号： H04B7/212 , H04L12/50 , G06F15/177
CPC分类号： H04L45/50 , H04L45/245 , H04L45/68 , Y02D50/30
摘要： In one embodiment, a method includes generating an aggregated pseudowire status message at a first network device in a Multi-Protocol Label Switching (MPLS) network, transmitting the aggregated pseudowire status message to a second network device on a Label Switched Path (LSP) extending between the first and second network devices in the MPLS network, and establishing at the first network device, an aggregated pseudowire status session with the second network device upon receiving a response to the aggregated pseudowire status message on the LSP. The aggregated pseudowire status message configured to verify a current status of pseudowires on the LSP. An apparatus is also disclosed.
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