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1. 发明授权

US08806063B1 Enhanced pulse assisted time synchronization protocol 有权
标题翻译：增强脉冲辅助时间同步协议
公开(公告)号：US08806063B1
公开(公告)日：2014-08-12
申请号：US13180286
申请日：2011-07-11
申请人： Prakash Kamath , Apurva Mehta , Kamatchi Gopalakrishnan , Rajagopalan Subbiah , Rohit Puri , Vikram Bobade
发明人： Prakash Kamath , Apurva Mehta , Kamatchi Gopalakrishnan , Rajagopalan Subbiah , Rohit Puri , Vikram Bobade
IPC分类号： G06F1/12 , G06F15/16 , H04J3/06
CPC分类号： G06F1/14 , G06F1/12 , H04J3/0667
摘要： A network device may include a timing module and at least one interface. The timing module determines a local time of the network device indicating when the network device sends a synchronization start message. The at least one interface sends the synchronization start message to a time client device to set the current time of day on the time client device, receives a synchronization response message from the time client device indicating that the current time of day of the time client device was set, and sends a synchronization success message to the time client device indicating that the time client device has correctly set its current time of day.
摘要翻译：网络设备可以包括定时模块和至少一个接口。定时模块确定网络设备的本地时间，指示网络设备何时发送同步开始消息。所述至少一个接口将同步开始消息发送到时间客户端设备，以在客户端设备的时间设置当前时间，从时间客户端设备接收指示当前时间的客户端设备的同步响应消息并且向客户端设备发送指示时间客户端设备正确地设置其当前时间的同步成功消息。

2. 发明授权

US08670299B1 Enhanced service status detection and fault isolation within layer two networks 有权
标题翻译：在第二层网络中增强服务状态检测和故障隔离
公开(公告)号：US08670299B1
公开(公告)日：2014-03-11
申请号：US12981221
申请日：2010-12-29
申请人： Pankaj Shukla , Sunesh Rustagi , Vikram Bobade
发明人： Pankaj Shukla , Sunesh Rustagi , Vikram Bobade
IPC分类号： G01R31/08
CPC分类号： H04L41/12 , H04L43/0811
摘要： An example method includes monitoring a layer two network with a first network device that operates within the network. The method also includes discovering a second network device that operates within the network by receiving an extended continuity check message (CCM) transmitted from the second network device. The extended CCM transmitted from the second network device indicates to other network devices that a service instance is available on the second network device, and includes an indication of one or more network devices from which the second network device has received CCMs for the service instance. The method further includes determining that bidirectional connectivity exists between the first network device and the second network device when the indication includes the first network device as one of the network devices from which the second network device has received CCMs for the service instance.
摘要翻译：示例性方法包括使用在网络内操作的第一网络设备监视第二层网络。该方法还包括通过接收从第二网络设备发送的扩展连续性检查消息（CCM）来发现在网络内工作的第二网络设备。从第二网络设备发送的扩展CCM向其他网络设备指示服务实例在第二网络设备上可用，并且包括一个或多个网络设备的指示，第二网络设备从该网络设备接收到用于服务实例的CCM。所述方法还包括当所述指示包括所述第一网络设备作为所述第二网络设备已从其接收到所述服务实例的CCM的网络设备之一时，确定所述第一网络设备和所述第二网络设备之间存在双向连接。

3. 发明授权

US08483069B1 Tracing Ethernet frame delay between network devices 有权
标题翻译：跟踪网络设备之间的以太网帧延迟
公开(公告)号：US08483069B1
公开(公告)日：2013-07-09
申请号：US12732826
申请日：2010-03-26
申请人： Vikram Bobade , Roopa Bayar
发明人： Vikram Bobade , Roopa Bayar
IPC分类号： H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26
CPC分类号： H04L43/0858 , H04L12/462 , H04L41/0213 , H04L43/0811 , H04L43/106
摘要： A method of tracing Ethernet frame delay between network devices is described that includes outputting a delay trace message Ethernet frame to a target MEP network device. The method also includes receiving one or more delay trace response Ethernet frames from one or more MEG intermediate point (MIP) network devices positioned along a network path from the originating MEP network device to the target MEP network device. The method also includes receiving a delay trace response Ethernet frame from the target MEP network device. In some embodiments, the method includes calculating delay associated with portions of the network between each of the network devices using the received responses.
摘要翻译：描述了描述网络设备之间的以太网帧延迟的方法，其包括将延迟跟踪消息以太网帧输出到目标MEP网络设备。该方法还包括从沿着从起始MEP网络设备到目标MEP网络设备的网络路径定位的一个或多个MEG中间点（MIP）网络设备接收一个或多个延迟跟踪响应以太网帧。该方法还包括从目标MEP网络设备接收延迟跟踪响应以太帧。在一些实施例中，该方法包括使用所接收的响应来计算与每个网络设备之间的网络的部分相关联的延迟。

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