公开(公告)号：US07953070B1

公开(公告)日：2011-05-31

申请号：US11506750

申请日：2006-08-17

申请人： Amit Agarwal ,  David Ahrens ,  Rupesh Kumar ,  Rohit Mehta ,  Anupam Rai

发明人： Amit Agarwal ,  David Ahrens ,  Rupesh Kumar ,  Rohit Mehta ,  Anupam Rai

IPC分类号： H04L12/66

CPC分类号： H04L63/0272 ,  H04M7/0078

摘要： In one embodiment, a communication device 204 includes a voice communication module 152 to effect packet-switched voice communications over an untrusted network 140; a secure communication module 228 to create a secured pathway 258 with a selected remote secure communication module 124; and a VPN topology client 232 to contact a VPN topology server 240 to receive VPN topology information 236 that enables the secure communication module to create the secured pathway with the selected remote secure communication module. The VPN topology information includes IP addresses associated with remote secure communication modules, with each of the IP addresses having a corresponding range of node addresses serviced by the respective secure communication module.

摘要翻译： 在一个实施例中，通信设备204包括语音通信模块152，以在不可信网络140上实现分组交换语音通信; 安全通信模块228，用于利用所选择的远程安全通信模块124创建安全通路258; 以及VPN拓扑客户端232以联系VPN拓扑服务器240以接收VPN拓扑信息236，其使安全通信模块能够利用所选择的远程安全通信模块创建安全路径。 VPN拓扑信息包括与远程安全通信模块相关联的IP地址，其中每个IP地址具有由相应的安全通信模块服务的对应的节点地址范围。

公开(公告)号：US20050207410A1

公开(公告)日：2005-09-22

申请号：US11014546

申请日：2004-12-16

申请人： Akshay Adhikari ,  Amit Agarwal ,  Lorraine Denby ,  Russell Jones ,  Rod Livingood ,  Jean Meloche ,  Anupam Rai ,  Wayne Sam ,  John Tuck

发明人： Akshay Adhikari ,  Amit Agarwal ,  Lorraine Denby ,  Russell Jones ,  Rod Livingood ,  Jean Meloche ,  Anupam Rai ,  Wayne Sam ,  John Tuck

IPC分类号： H04L12/24 ,  H04L12/26 ,  H04L12/46 ,  H04L12/56 ,  H04L29/06

CPC分类号： H04L45/00 ,  H04L12/4633 ,  H04L12/4675 ,  H04L41/0677 ,  H04L41/145 ,  H04L43/10 ,  H04L43/50 ,  H04L45/20 ,  H04L45/26 ,  H04L69/22

摘要： Techniques for determining a problem location or otherwise characterizing a network comprising a plurality of processing elements, including at least one processing element associated with performance of a packet encapsulation operation of an encapsulation protocol. The packet encapsulation operation is performed on a test packet to generate an encapsulated packet, the test packet having a time to live (TTL) value and an identifier. In conjunction with performance of the packet encapsulation operation, the TTL value and the identifier of the test packet are copied to a header of the encapsulated packet. The encapsulated packet is transmitted, and a determination is made as to whether a reply packet has been received responsive to transmission of the encapsulated packet. The reply packet, if any, is processed to obtain information utilizable in determining the problem location or otherwise characterizing the network. By way of example, these operations may be repeated, for subsequent test packets with increasing TTL values, until an amount of router hop information sufficient to determine the problem location is obtained.

摘要翻译： 用于确定问题位置或以其他方式表征包括多个处理元件的网络的技术，包括与执行封装协议的分组封装操作相关联的至少一个处理元件。 在测试分组上执行分组封装操作以生成封装分组，测试分组具有生存时间（TTL）值和标识符。 结合分组封装操作的性能，将TTL值和测试分组的标识符复制到封装分组的报头。 发送封装的分组，并且确定响应于封装分组的传输是否已经接收到应答分组。 处理回复数据包（如果有的话）以获得可用于确定问题位置或以其他方式表征网络的信息。 作为示例，对于具有增加的TTL值的后续测试分组，可以重复这些操作，直到获得足以确定问题位置的路由器跳跃信息的量。

公开(公告)号：US07583667B2

公开(公告)日：2009-09-01

申请号：US11014546

申请日：2004-12-16

申请人： Akshay Adhikari ,  Amit Agarwal ,  Lorraine Denby ,  Russell C. Jones ,  Rod D. Livingood ,  Jean Meloche ,  Anupam Rai ,  Wayne Sam ,  John R. Tuck, Jr.

发明人： Akshay Adhikari ,  Amit Agarwal ,  Lorraine Denby ,  Russell C. Jones ,  Rod D. Livingood ,  Jean Meloche ,  Anupam Rai ,  Wayne Sam ,  John R. Tuck, Jr.

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04L45/00 ,  H04L12/4633 ,  H04L12/4675 ,  H04L41/0677 ,  H04L41/145 ,  H04L43/10 ,  H04L43/50 ,  H04L45/20 ,  H04L45/26 ,  H04L69/22

摘要： Techniques for determining a problem location or otherwise characterizing a network comprising a plurality of processing elements, including at least one processing element associated with performance of a packet encapsulation operation of an encapsulation protocol. The packet encapsulation operation is performed on a test packet to generate an encapsulated packet, the test packet having a time to live (TTL) value and an identifier. In conjunction with performance of the packet encapsulation operation, the TTL value and the identifier of the test packet are copied to a header of the encapsulated packet. The encapsulated packet is transmitted, and a determination is made as to whether a reply packet has been received responsive to transmission of the encapsulated packet. The reply packet, if any, is processed to obtain information utilizable in determining the problem location or otherwise characterizing the network. By way of example, these operations may be repeated, for subsequent test packets with increasing TTL values, until an amount of router hop information sufficient to determine the problem location is obtained.

摘要翻译： 用于确定问题位置或以其他方式表征包括多个处理元件的网络的技术，包括与执行封装协议的分组封装操作相关联的至少一个处理元件。 在测试分组上执行分组封装操作以生成封装分组，测试分组具有生存时间（TTL）值和标识符。 结合分组封装操作的性能，将TTL值和测试分组的标识符复制到封装分组的报头。 发送封装的分组，并且确定响应于封装分组的传输是否已经接收到应答分组。 处理回复数据包（如果有的话）以获得可用于确定问题位置或以其他方式表征网络的信息。 作为示例，对于具有增加的TTL值的后续测试分组，可以重复这些操作，直到获得足以确定问题位置的路由器跳跃信息的量。

公开(公告)号：US08059641B1

公开(公告)日：2011-11-15

申请号：US11458824

申请日：2006-07-20

申请人： Anupam Rai

发明人： Anupam Rai

IPC分类号： H04L12/28 ,  H04L12/56 ,  G06F15/16 ,  G06F15/173 ,  H04M1/64

CPC分类号： H04L12/4633 ,  H04L63/0272 ,  H04L63/20

摘要： The present invention is directed to a communication device including a discovery agent 348 operable to determine an encapsulation method used by a tunnel by transmitting packets generated using different encapsulation protocols until a responsive packet is received on a selected receive port.

摘要翻译： 本发明涉及一种通信设备，其包括发现代理348，其可操作以通过发送使用不同封装协议生成的分组来确定隧道所使用的封装方法，直到在所选择的接收端口上接收到响应分组。