公开(公告)号：US08724627B2

公开(公告)日：2014-05-13

申请号：US13031909

申请日：2011-02-22

申请人： Clarence Filsfils ,  Sami Boutros ,  Samer M Salam ,  Ali Sajassi

发明人： Clarence Filsfils ,  Sami Boutros ,  Samer M Salam ,  Ali Sajassi

IPC分类号： H04L12/28

CPC分类号： H04L12/4641 ,  H04L45/16 ,  H04L45/50 ,  H04L45/68

摘要： In one embodiment, single-homing and active-active multi-homing is provided in a Virtual Private LAN Service (VPLS). A customer edge node actively communicates frames of a same Virtual Private Network (VPN) instance with two or more VPLS nodes of a VPLS network. The VPLS nodes are configured to appropriately forward frames throughout the VPLS network: without looping of a frame sent by the same external node back to the same external node, without flooding multiple copies of a frame to the same external node, and while performing learning of addresses in forwarding tables of said VPLS nodes such that said forwarding tables of said VPLS nodes converge despite frames of the same LAN service being received by said at least two of said VPLS nodes from the same external node.

摘要翻译： 在一个实施例中，在虚拟专用LAN服务（VPLS）中提供单归属和主动主动多归位。 客户边缘节点主动将相同虚拟专用网（VPN）实例的帧与VPLS网络的两个或多个VPLS节点进行通信。 VPLS节点被配置为在整个VPLS网络中适当地转发帧：不将相同外部节点发送的帧循环回相同的外部节点，而不会将帧的多个拷贝淹没到同一个外部节点，同时执行学习 在所述VPLS节点的转发表中的地址，使得所述VPLS节点的所述转发表收敛，尽管所述至少两个所述VPLS节点从相同外部节点接收到相同LAN服务的帧。

公开(公告)号：US20120213222A1

公开(公告)日：2012-08-23

申请号：US13031909

申请日：2011-02-22

申请人： Clarence Filsfils ,  Sami Boutros ,  Samer M. Salam ,  Ali Sajassi

发明人： Clarence Filsfils ,  Sami Boutros ,  Samer M. Salam ,  Ali Sajassi

IPC分类号： H04L12/28

CPC分类号： H04L12/4641 ,  H04L45/16 ,  H04L45/50 ,  H04L45/68

摘要： In one embodiment, single-homing and active-active multi-homing is provided in a Virtual Private LAN Service (VPLS). A customer edge node actively communicates frames of a same Virtual Private Network (VPN) instance with two or more VPLS nodes of a VPLS network. The VPLS nodes are configured to appropriately forward frames throughout the VPLS network: without looping of a frame sent by the same external node back to the same external node, without flooding multiple copies of a frame to the same external node, and while performing learning of addresses in forwarding tables of said VPLS nodes such that said forwarding tables of said VPLS nodes converge despite frames of the same LAN service being received by said at least two of said VPLS nodes from the same external node.

摘要翻译： 在一个实施例中，在虚拟专用LAN服务（VPLS）中提供单归属和主动主动多归位。 客户边缘节点主动将相同虚拟专用网（VPN）实例的帧与VPLS网络的两个或多个VPLS节点进行通信。 VPLS节点被配置为在整个VPLS网络中适当地转发帧：不将相同外部节点发送的帧循环回相同的外部节点，而不会将帧的多个拷贝淹没到同一个外部节点，同时执行学习 在所述VPLS节点的转发表中的地址，使得所述VPLS节点的所述转发表收敛，尽管所述至少两个所述VPLS节点从相同外部节点接收到相同LAN服务的帧。

公开(公告)号：US20130254359A1

公开(公告)日：2013-09-26

申请号：US13428436

申请日：2012-03-23

申请人： Sami Boutros ,  Samer Salam ,  Ali Sajassi ,  Clarence Filsfils

发明人： Sami Boutros ,  Samer Salam ,  Ali Sajassi ,  Clarence Filsfils

IPC分类号： G06F15/173

CPC分类号： H04L61/103 ,  H04L61/6009

摘要： An example method is provided that includes determining whether an address resolution protocol reply from a local machine has been received at an edge node; updating a local cache based on the reply from the local machine; and sending the reply to a plurality of edge nodes through a data plane of a data center interconnect. In more specific implementations, the method can include determining whether an address resolution protocol request has been received from the local machine. The method could also include updating a local machine cache based on the request. In certain implementations, the method can include determining whether the request is targeting the local machine; and dropping the request if the request is targeting the local machine. The method could also include sending the request through the data center interconnect if the request is not targeting the local machine.

摘要翻译： 提供了一种示例性方法，其包括确定在边缘节点处是否已经接收到来自本地机器的地址解析协议应答; 根据本地机器的回复更新本地缓存; 并通过数据中心互连的数据平面将答复发送到多个边缘节点。 在更具体的实现中，该方法可以包括确定是否已经从本地机器接收到地址解析协议请求。 该方法还可以包括基于该请求更新本地机器缓存。 在某些实现中，该方法可以包括确定请求是否针对本地机器; 如果请求针对本地机器，则删除该请求。 该方法还可以包括如果请求不针对本地机器，则通过数据中心互连发送请求。

公开(公告)号：US09548959B2

公开(公告)日：2017-01-17

申请号：US13428436

申请日：2012-03-23

申请人： Sami Boutros ,  Samer Salam ,  Ali Sajassi ,  Clarence Filsfils

发明人： Sami Boutros ,  Samer Salam ,  Ali Sajassi ,  Clarence Filsfils

IPC分类号： G06F15/173 ,  H04L29/12

CPC分类号： H04L61/103 ,  H04L61/6009

摘要： An example method is provided that includes determining whether an address resolution protocol reply from a local machine has been received at an edge node; updating a local cache based on the reply from the local machine; and sending the reply to a plurality of edge nodes through a data plane of a data center interconnect. In more specific implementations, the method can include determining whether an address resolution protocol request has been received from the local machine. The method could also include updating a local machine cache based on the request. In certain implementations, the method can include determining whether the request is targeting the local machine; and dropping the request if the request is targeting the local machine. The method could also include sending the request through the data center interconnect if the request is not targeting the local machine.

摘要翻译： 提供了一种示例性方法，其包括确定在边缘节点处是否已经接收到来自本地机器的地址解析协议应答; 根据本地机器的回复更新本地缓存; 并通过数据中心互连的数据平面将答复发送到多个边缘节点。 在更具体的实现中，该方法可以包括确定是否已经从本地机器接收到地址解析协议请求。 该方法还可以包括基于该请求更新本地机器缓存。 在某些实现中，该方法可以包括确定请求是否针对本地机器; 如果请求针对本地机器，则删除该请求。 该方法还可以包括如果请求不针对本地机器，则通过数据中心互连发送请求。

公开(公告)号：US08761048B2

公开(公告)日：2014-06-24

申请号：US13471676

申请日：2012-05-15

申请人： Ali Sajassi ,  Samer Salam ,  Sami Boutros

发明人： Ali Sajassi ,  Samer Salam ,  Sami Boutros

IPC分类号： H04L12/28 ,  H04L12/24 ,  H04L29/12

CPC分类号： H04L41/12 ,  H04L29/12066 ,  H04L45/02 ,  H04L45/04 ,  H04L45/50 ,  H04L61/1511

摘要： In one embodiment, a method includes determining when a predetermined period of time has elapsed, and determining whether at least a first message has been obtained on a first port of a node during the predetermined period of time when it is determined that the predetermined period of time has elapsed. The method also includes identifying the first port as being connected to a single-homed site when it is determined that the at least first message has not been obtained on the first port during the predetermined period of time. The first port is identified as being connected to a multi-homed network, a multi-homed device, or a hierarchical Ethernet segment when it is determined that the at least first message has been obtained on the first port during the predetermined period of time.

摘要翻译： 在一个实施例中，一种方法包括确定何时经过了预定的时间段，并且在确定在预定时间段的预定时间段内，确定在节点的第一端口上是否已经获得了至少第一消息 时间已经过去了 该方法还包括当在预定时间段内确定在第一端口上尚未获得至少第一消息时，将第一端口识别为连接到单个归属站点。 当在预定时间段内确定已经在第一端口上获得了至少第一消息时，第一端口被识别为连接到多归属网络，多归属设备或分层以太网段。

公开(公告)号：US20130148657A1

公开(公告)日：2013-06-13

申请号：US13313968

申请日：2011-12-07

申请人： Samer Salam ,  Ali Sajassi ,  Sami Boutros

发明人： Samer Salam ,  Ali Sajassi ,  Sami Boutros

IPC分类号： H04L12/56

CPC分类号： H04L45/68 ,  H04L12/4641 ,  H04L45/66

摘要： In one embodiment, a network device in a set of network devices obtains a pseudowire label for a Provider Edge (PE) device, where the pseudowire label corresponds to a Virtual Local Area Network (VLAN) on the PE device. In addition, the network device obtains a set of one or more MAC addresses reachable via the PE device, wherein the set of network devices support Ethernet Virtual Private Network (E-VPN) and are in the same redundancy group such that the set of network devices are coupled to the same customer edge device. The network device stores the pseudowire label in association with the set of one or more MAC addresses. The network device uses the pseudowire label to encapsulate traffic associated with the VLAN that is received from the customer edge device and destined to the set of MAC addresses reachable via the PE device.

摘要翻译： 在一个实施例中，一组网络设备中的网络设备获得用于提供商边缘（PE）设备的伪线标签，其中伪线标签对应于PE设备上的虚拟局域网（VLAN）。 另外，网络设备获得通过PE设备可达到的一个或多个MAC地址的集合，其中该组网络设备支持以太网虚拟专用网（E-VPN），并且处于相同的冗余组中，使得该组网络 设备耦合到相同的客户边缘设备。 网络设备将伪线标签与一组或多个MAC地址相关联地存储。 网络设备使用伪线标签封装与客户边缘设备接收到的VLAN相关联的流量，并发往可通过PE设备到达的一组MAC地址。

公开(公告)号：US09088517B2

公开(公告)日：2015-07-21

申请号：US13369142

申请日：2012-02-08

申请人： Ali Sajassi ,  Samer Salam ,  Sami Boutros

发明人： Ali Sajassi ,  Samer Salam ,  Sami Boutros

IPC分类号： H04L12/753 ,  H04L12/723

CPC分类号： H04L12/4679 ,  H04L12/1863 ,  H04L45/02 ,  H04L45/48 ,  H04L45/50 ,  H04L61/2069

摘要： Techniques for stitching multicast trees in a multiple data center environment. According to one embodiment, a technique for stitching multicast trees is provided, which includes determining, at an edge device of a data center, one or more Virtual Local Area Networks (VLANs) assigned to the edge device as a result of a designated forwarder election. An assigned forwarder message is sent by the edge device to one or more devices on the data center, the assigned forwarder message advertising the edge device as a designated forwarder for the VLANs assigned to the edge device. For each of the VLANs assigned to the edge device, the assigned forwarder message causes the edge device to be included in a multicast tree for the VLAN when the assigned forwarder message is received by specific ones of the devices in the data center that are associated with the VLAN.

摘要翻译： 在多数据中心环境中拼接多播树的技术。 根据一个实施例，提供了一种用于拼接多播树的技术，其包括在数据中心的边缘设备处确定由于指定的转发器选举而分配给边缘设备的一个或多个虚拟局域网（VLAN） 。 分配的转发器消息由边缘设备发送到数据中心上的一个或多个设备，所分配的转发器消息将边缘设备通告为分配给边缘设备的VLAN的指定转发器。 对于分配给边缘设备的每个VLAN，分配的转发器消息使得边缘设备被包含在VLAN的多播树中，当分配的转发器消息被数据中心中与数据中心相关联的特定设备接收时 VLAN。

公开(公告)号：US08948169B2

公开(公告)日：2015-02-03

申请号：US13313968

申请日：2011-12-07

申请人： Samer Salam ,  Ali Sajassi ,  Sami Boutros

发明人： Samer Salam ,  Ali Sajassi ,  Sami Boutros

IPC分类号： H04L12/56 ,  H04L12/721 ,  H04L12/46

CPC分类号： H04L45/68 ,  H04L12/4641 ,  H04L45/66

摘要： In one embodiment, a network device in a set of network devices obtains a pseudowire label for a Provider Edge (PE) device, where the pseudowire label corresponds to a Virtual Local Area Network (VLAN) on the PE device. In addition, the network device obtains a set of one or more MAC addresses reachable via the PE device, wherein the set of network devices support Ethernet Virtual Private Network (E-VPN) and are in the same redundancy group such that the set of network devices are coupled to the same customer edge device. The network device stores the pseudowire label in association with the set of one or more MAC addresses. The network device uses the pseudowire label to encapsulate traffic associated with the VLAN that is received from the customer edge device and destined to the set of MAC addresses reachable via the PE device.

摘要翻译： 在一个实施例中，一组网络设备中的网络设备获得用于提供商边缘（PE）设备的伪线标签，其中伪线标签对应于PE设备上的虚拟局域网（VLAN）。 另外，网络设备获得通过PE设备可达到的一个或多个MAC地址的集合，其中该组网络设备支持以太网虚拟专用网（E-VPN），并且处于相同的冗余组中，使得该组网络 设备耦合到相同的客户边缘设备。 网络设备将伪线标签与一组或多个MAC地址相关联地存储。 网络设备使用伪线标签封装与客户边缘设备接收到的VLAN相关联的流量，并发往可通过PE设备到达的一组MAC地址。

公开(公告)号：US20130235876A1

公开(公告)日：2013-09-12

申请号：US13471676

申请日：2012-05-15

申请人： Ali Sajassi ,  Samer Salam ,  Sami Boutros

发明人： Ali Sajassi ,  Samer Salam ,  Sami Boutros

IPC分类号： H04L12/56

CPC分类号： H04L41/12 ,  H04L29/12066 ,  H04L45/02 ,  H04L45/04 ,  H04L45/50 ,  H04L61/1511

摘要： In one embodiment, a method includes determining when a predetermined period of time has elapsed, and determining whether at least a first message has been obtained on a first port of a node during the predetermined period of time when it is determined that the predetermined period of time has elapsed. The method also includes identifying the first port as being connected to a single-homed site when it is determined that the at least first message has not been obtained on the first port during the predetermined period of time. The first port is identified as being connected to a multi-homed network, a multi-homed device, or a hierarchical Ethernet segment when it is determined that the at least first message has been obtained on the first port during the predetermined period of time.

摘要翻译： 在一个实施例中，一种方法包括确定何时经过了预定的时间段，并且在确定在预定时间段的预定时间段内，确定在节点的第一端口上是否已经获得了至少第一消息 时间已经过去了 该方法还包括当在预定时间段内确定在第一端口上尚未获得至少第一消息时，将第一端口识别为连接到单个归属站点。 当在预定时间段内确定在第一端口上已经获得了至少第一消息时，第一端口被识别为连接到多归属网络，多归属设备或分层以太网段。

公开(公告)号：US20130201986A1

公开(公告)日：2013-08-08

申请号：US13369142

申请日：2012-02-08

申请人： Ali Sajassi ,  Samer Salam ,  Sami Boutros

发明人： Ali Sajassi ,  Samer Salam ,  Sami Boutros

IPC分类号： H04L12/56

CPC分类号： H04L12/4679 ,  H04L12/1863 ,  H04L45/02 ,  H04L45/48 ,  H04L45/50 ,  H04L61/2069

摘要： Techniques for stitching multicast trees in a multiple data center environment. According to one embodiment, a technique for stitching multicast trees is provided, which includes determining, at an edge device of a data center, one or more Virtual Local Area Networks (VLANs) assigned to the edge device as a result of a designated forwarder election. An assigned forwarder message is sent by the edge device to one or more devices on the data center, the assigned forwarder message advertising the edge device as a designated forwarder for the VLANs assigned to the edge device. For each of the VLANs assigned to the edge device, the assigned forwarder message causes the edge device to be included in a multicast tree for the VLAN when the assigned forwarder message is received by specific ones of the devices in the data center that are associated with the VLAN.