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1. 发明授权

US07808992B2 Platform independent implementation of private VLANS 有权
标题翻译：平台独立实现私有VLAN
公开(公告)号：US07808992B2
公开(公告)日：2010-10-05
申请号：US11026464
申请日：2004-12-30
申请人： Sanjib Homchaudhuri , Senthil Arunacahalam , Sundher Narayanaswamy , Krishna Kumar Vavilala , Abhishek Gupta
发明人： Sanjib Homchaudhuri , Senthil Arunacahalam , Sundher Narayanaswamy , Krishna Kumar Vavilala , Abhishek Gupta
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L12/4641
摘要： A PVLAN having a primary and secondary VLAN's where the primary and secondary VLAN's have ports and the users connected to those ports. The MAC addresses of those users are learned in the primary or the secondary VLAN's and together with the port designation are stored preferably in tables associated with the VLAN's and the associated VLAN's. Processes are provided that replicate the tables in the other VLAN's so that the information necessary to transfer packets between source and destination ports is available to the associated VLAN's.
摘要翻译： PVLAN具有主VLAN和辅助VLAN，主VLAN和Secondary VLAN具有端口，用户连接到这些端口。这些用户的MAC地址在主要或次要VLAN中被学习，并且端口指定最好存储在与VLAN和相关联的VLAN相关联的表中。提供了复制另一个VLAN中的表的进程，以便在源端口和目标端口之间传输数据包所需的信息对关联的VLAN可用。

2. 发明申请

US20060146835A1 Platform independent implementation of private VLANS 有权
标题翻译：平台独立实现私有VLAN
公开(公告)号：US20060146835A1
公开(公告)日：2006-07-06
申请号：US11026464
申请日：2004-12-30
申请人： Sanjib Homchaudhuri , Senthil Arunacahalam , Sundher Narayanaswamy , Krishna Vavilala , Abhishek Gupta
发明人： Sanjib Homchaudhuri , Senthil Arunacahalam , Sundher Narayanaswamy , Krishna Vavilala , Abhishek Gupta
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L12/4641
摘要： A PVLAN having a primary and secondary VLAN's where the primary and secondary VLAN's have ports and the users connected to those ports. The MAC addresses of those users are learned in the primary or the secondary VLAN's and together with the port designation are stored preferably in tables associated with the VLAN's and the associated VLAN's. Processes are provided that replicate the tables in the other VLAN's so that the information necessary to transfer packets between source and destination ports is available to the associated VLAN's.
摘要翻译： PVLAN具有主VLAN和辅助VLAN，主VLAN和Secondary VLAN具有端口，用户连接到这些端口。这些用户的MAC地址在主要或次要VLAN中被学习，并且端口指定最好存储在与VLAN和相关联的VLAN相关联的表中。提供了复制另一个VLAN中的表的进程，以便在源端口和目标端口之间传输数据包所需的信息对关联的VLAN可用。

3. 发明申请

US20070030817A1 Constraining multicast traffic between a layer 2 network device and a router 有权
标题翻译：限制第2层网络设备和路由器之间的组播流量
公开(公告)号：US20070030817A1
公开(公告)日：2007-02-08
申请号：US11198999
申请日：2005-08-08
申请人： Senthil Arunachalam , Sundher Narayanaswamy , Isidoros Kouvelas , Ishan Wu , Toerless Eckert
发明人： Senthil Arunachalam , Sundher Narayanaswamy , Isidoros Kouvelas , Ishan Wu , Toerless Eckert
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L12/18 , H04L12/4625 , H04L45/16
摘要： A method, system, computer program product and apparatus are presented to enable a L2 network device, such as a bridge or switch, to control the flow of a multicast data stream to a connected router in response to control messages received from the router by the L2 network device. By controlling the flow of multicast data streams in this manner, there will be a corresponding reduction in wasted bandwidth due to unnecessary transmission of these multicast data streams and a reduction in processing overhead by the router due to analysis and dropping of unnecessary multicast frames. In one aspect of the present invention, the router can generate the control messages in response to receiving a data frame in a multicast data stream from the L2 network device. The router can determine whether a subscriber to that multicast data stream is connected downstream of the router and then transmit an appropriate control message to the upstream L2 network device, indicating whether the router does or does not have a downstream subscriber. In response to such a control message, the L2 network device can cease transmitting the multicast data stream to the router, if appropriate.
摘要翻译：提出了一种方法，系统，计算机程序产品和装置，以使诸如网桥或交换机之类的L2网络设备能够响应于从路由器接收到的控制消息来控制组播数据流到连接的路由器的流 L2网络设备。通过以这种方式控制组播数据流的流动，由于这些组播数据流的不必要的传输和由于不必要的多播帧的分析和丢弃而导致的路由器的处理开销的降低，相应地减少了带宽浪费。在本发明的一个方面，路由器可以响应于从L2网络设备接收到组播数据流中的数据帧来生成控制消息。路由器可以确定该组播数据流的用户是否连接在路由器下游，然后向上游L2网络设备发送适当的控制消息，指示路由器是否有下游用户。响应于这样的控制消息，如果适当，则L2网络设备可以停止向路由器发送组播数据流。

4. 发明授权

US08040884B2 Constraining multicast traffic between a layer 2 network device and a router 有权
标题翻译：限制第2层网络设备和路由器之间的组播流量
公开(公告)号：US08040884B2
公开(公告)日：2011-10-18
申请号：US11198999
申请日：2005-08-08
申请人： Senthil Arunachalam , Sundher Narayanaswamy , Isidoros Kouvelas , Ishan Wu , Toerless Eckert
发明人： Senthil Arunachalam , Sundher Narayanaswamy , Isidoros Kouvelas , Ishan Wu , Toerless Eckert
IPC分类号： H04L12/54
CPC分类号： H04L12/18 , H04L12/4625 , H04L45/16
摘要： A method, system, computer program product and apparatus are presented to enable a L2 network device, such as a bridge or switch, to control the flow of a multicast data stream to a connected router in response to control messages received from the router by the L2 network device. By controlling the flow of multicast data streams in this manner, there will be a corresponding reduction in wasted bandwidth due to unnecessary transmission of these multicast data streams and a reduction in processing overhead by the router due to analysis and dropping of unnecessary multicast frames. In one aspect of the present invention, the router can generate the control messages in response to receiving a data frame in a multicast data stream from the L2 network device. The router can determine whether a subscriber to that multicast data stream is connected downstream of the router and then transmit an appropriate control message to the upstream L2 network device, indicating whether the router does or does not have a downstream subscriber. In response to such a control message, the L2 network device can cease transmitting the multicast data stream to the router, if appropriate.
摘要翻译：提出了一种方法，系统，计算机程序产品和装置，以使诸如网桥或交换机之类的L2网络设备能够响应于从路由器接收到的控制消息来控制组播数据流到连接的路由器的流 L2网络设备。通过以这种方式控制组播数据流的流动，由于这些组播数据流的不必要的传输和由于不必要的多播帧的分析和丢弃而导致的路由器的处理开销的降低，相应地减少了带宽浪费。在本发明的一个方面，路由器可以响应于从L2网络设备接收到组播数据流中的数据帧来生成控制消息。路由器可以确定该组播数据流的用户是否连接在路由器下游，然后向上游L2网络设备发送适当的控制消息，指示路由器是否有下游用户。响应于这样的控制消息，如果适当，则L2网络设备可以停止向路由器发送组播数据流。

5. 发明申请

US20100220726A1 SOURCE SPECIFIC MULTICAST LAYER 2 NETWORKING DEVICE AND METHOD 有权
标题翻译：源特定多播层2网络设备和方法
公开(公告)号：US20100220726A1
公开(公告)日：2010-09-02
申请号：US12779004
申请日：2010-05-12
申请人： Tsia Yiu Lo , Jie Cheng Jiang , Senthil Arunachalam , Sundher Narayanaswamy
发明人： Tsia Yiu Lo , Jie Cheng Jiang , Senthil Arunachalam , Sundher Narayanaswamy
IPC分类号： H04L12/56
CPC分类号： H04L12/18 , H04L45/16
摘要： Bridge domain communication methods and devices are presented for efficiently communicating information in a bridge domain based upon group indications and source indications. Packets with a source and destination indication are received. A bridge domain communication process is performed at the bridge level wherein a packet is selected for forwarding based upon a source and group indication. For example, a determination is made if a particular bridge domain corresponds to the group destination indication in the received packet. The source indication in the packet is compared with a tracked source designation indication. Output ports associated with the tracked source designation indication are identified if the tracked source designation indication matches the received source indication. The communication packet is forwarded on identified ports.
摘要翻译：提出了桥域通信方法和设备，用于基于组指示和源指示来有效地在桥接域中传达信息。收到源和目的地指示的数据包。在桥级别执行桥域通信过程，其中基于源和组指示选择分组用于转发。例如，确定特定网桥域对应于接收到的分组中的组目的地指示。将数据包中的源指示与跟踪的源指定指示进行比较。如果跟踪的源指定指示与接收的源指示匹配，则识别与跟踪的源指定指示相关联的输出端口。通信分组在标识的端口上转发。

6. 发明授权

US07724739B2 Source specific multicast layer 2 networking device and method 有权
标题翻译：源特定组播层2组网设备及方法
公开(公告)号：US07724739B2
公开(公告)日：2010-05-25
申请号：US11083809
申请日：2005-03-18
申请人： Tsia Yiu Lo , Jie Cheng Jiang , Senthil Arunachalam , Sundher Narayanaswamy
发明人： Tsia Yiu Lo , Jie Cheng Jiang , Senthil Arunachalam , Sundher Narayanaswamy
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L12/18 , H04L45/16
摘要： Bridge domain communication methods and devices are presented for efficiently communicating information in a bridge domain based upon group indications and source indications. Packets with a source and destination indication are received. A bridge domain communication process is performed at the bridge level wherein a packet is selected for forwarding based upon a source and group indication. For example, a determination is made if a particular bridge domain corresponds to the group destination indication in the received packet. The source indication in the packet is compared with a tracked source designation indication. Output ports associated with the tracked source designation indication are identified if the tracked source designation indication matches the received source indication. The communication packet is forwarded on identified ports.
摘要翻译：提出了桥域通信方法和设备，用于基于组指示和源指示来有效地在桥接域中传达信息。收到源和目的地指示的数据包。在桥级别执行桥域通信过程，其中基于源和组指示选择分组用于转发。例如，确定特定网桥域对应于接收到的分组中的组目的地指示。将数据包中的源指示与跟踪的源指定指示进行比较。如果跟踪的源指定指示与接收的源指示匹配，则识别与跟踪的源指定指示相关联的输出端口。通信分组在标识的端口上转发。

7. 发明申请

US20060209829A1 Source specific multicast layer 2 networking device and method 有权
公开(公告)号：US20060209829A1
公开(公告)日：2006-09-21
申请号：US11083809
申请日：2005-03-18
申请人： Tsia Lo , Jie Jiang , Senthil Arunachalam , Sundher Narayanaswamy
发明人： Tsia Lo , Jie Jiang , Senthil Arunachalam , Sundher Narayanaswamy
IPC分类号： H04L12/28
CPC分类号： H04L12/18 , H04L45/16
摘要： Bridge domain communication methods and devices are presented for efficiently communicating information in a bridge domain based upon group indications and source indications. Packets with a source and destination indication are received. A bridge domain communication process is performed at the bridge level wherein a packet is selected for forwarding based upon a source and group indication. For example, a determination is made if a particular bridge domain corresponds to the group destination indication in the received packet. The source indication in the packet is compared with a tracked source designation indication. Output ports associated with the tracked source designation indication are identified if the tracked source designation indication matches the received source indication. The communication packet is forwarded on identified ports.

8. 发明授权

US08503445B2 Source specific multicast layer 2 networking device and method 有权
标题翻译：源特定组播层2组网设备及方法
公开(公告)号：US08503445B2
公开(公告)日：2013-08-06
申请号：US12779004
申请日：2010-05-12
申请人： Tsia Yiu Lo , Jie Cheng Jiang , Senthil Arunachalam , Sundher Narayanaswamy
发明人： Tsia Yiu Lo , Jie Cheng Jiang , Senthil Arunachalam , Sundher Narayanaswamy
IPC分类号： H04L12/28
CPC分类号： H04L12/18 , H04L45/16
摘要： Bridge domain communication methods and devices are presented for efficiently communicating information in a bridge domain based upon group indications and source indications. Packets with a source and destination indication are received. A bridge domain communication process is performed at the bridge level wherein a packet is selected for forwarding based upon a source and group indication. For example, a determination is made if a particular bridge domain corresponds to the group destination indication in the received packet. The source indication in the packet is compared with a tracked source designation indication. Output ports associated with the tracked source designation indication are identified if the tracked source designation indication matches the received source indication. The communication packet is forwarded on identified ports.
摘要翻译：提出了桥域通信方法和设备，用于基于组指示和源指示来有效地在桥接域中传达信息。收到源和目的地指示的数据包。在桥级别执行桥域通信过程，其中基于源和组指示选择分组用于转发。例如，确定特定网桥域对应于接收到的分组中的组目的地指示。将数据包中的源指示与跟踪的源指定指示进行比较。如果跟踪的源指定指示与接收的源指示匹配，则识别与跟踪的源指定指示相关联的输出端口。通信分组在标识的端口上转发。

9. 发明授权

US08391182B2 User isolation between network devices 有权
标题翻译：网络设备之间的用户隔离
公开(公告)号：US08391182B2
公开(公告)日：2013-03-05
申请号：US13528455
申请日：2012-06-20
申请人： Nicolas Breton , Parixit Gokhale , Sundher Narayanaswamy
发明人： Nicolas Breton , Parixit Gokhale , Sundher Narayanaswamy
IPC分类号： H04L12/28
CPC分类号： H04L49/30 , H04L12/2852 , H04L12/42 , H04L12/437 , H04L45/18 , H04L49/555
摘要： In one embodiment, a plurality of network interfaces of a network device that are configured to communicate with other network devices in a first computer network are identified as network-to-network interfaces (NNIs). Also, one or more network interfaces of the network device that are configured to provide access to the first computer network to user devices are identified as user-to-network interfaces (UNIs). One or more NNIs of the plurality of NNIs are selected to forward traffic from the network device to an aggregation device of the first network that couples the first computer network to a second computer network. Also, one or more NNIs of the plurality of NNIs that have not been selected to forward traffic from the device to the aggregation device are designated as network-to-network interface alternates (NNI-ALTs). The one or more NNI-ALTs are treated as UNIs for user data traffic forwarding decisions.
摘要翻译：在一个实施例中，被配置为与第一计算机网络中的其他网络设备通信的网络设备的多个网络接口被识别为网络到网络接口（NNI）。此外，被配置为向用户设备提供对第一计算机网络的访问的网络设备的一个或多个网络接口被标识为用户到网络接口（UNI）。选择多个NNI中的一个或多个NNI以将来自网络设备的业务转发到将第一计算机网络耦合到第二计算机网络的第一网络的聚合设备。此外，未被选择将流量从设备转发到聚合设备的多个NNI中的一个或多个NNI被指定为网络到网络接口交替（NNI-ALT）。一个或多个NNI-ALT被视为用于用户数据流量转发决定的UNI。

10. 发明申请

US20120257542A1 USER ISOLATION BETWEEN NETWORK DEVICES 有权
标题翻译：网络设备之间的用户隔离
公开(公告)号：US20120257542A1
公开(公告)日：2012-10-11
申请号：US13528455
申请日：2012-06-20
申请人： Nicolas Breton , Parixit Gokhale , Sundher Narayanaswamy
发明人： Nicolas Breton , Parixit Gokhale , Sundher Narayanaswamy
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04L49/30 , H04L12/2852 , H04L12/42 , H04L12/437 , H04L45/18 , H04L49/555
摘要： In one embodiment, a plurality of network interfaces of a network device that are configured to communicate with other network devices in a first computer network are identified as network-to-network interfaces (NNIs). Also, one or more network interfaces of the network device that are configured to provide access to the first computer network to user devices are identified as user-to-network interfaces (UNIs). One or more NNIs of the plurality of NNIs are selected to forward traffic from the network device to an aggregation device of the first network that couples the first computer network to a io second computer network. Also, one or more NNIs of the plurality of NNIs that have not been selected to forward traffic from the device to the aggregation device are designated as network-to-network interface alternates (NNI-ALTs). The one or more NNI-ALTs are treated as UNIs for user data traffic forwarding decisions.
摘要翻译：在一个实施例中，被配置为与第一计算机网络中的其他网络设备通信的网络设备的多个网络接口被识别为网络到网络接口（NNI）。此外，被配置为向用户设备提供对第一计算机网络的访问的网络设备的一个或多个网络接口被标识为用户到网络接口（UNI）。选择多个NNI中的一个或多个NNI以将来自网络设备的业务转发到将第一计算机网络耦合到第二计算机网络的第一网络的聚合设备。此外，未被选择将流量从设备转发到聚合设备的多个NNI中的一个或多个NNI被指定为网络到网络接口交替（NNI-ALT）。一个或多个NNI-ALT被视为用于用户数据流量转发决定的UNI。

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