公开(公告)号：US07944846B1

公开(公告)日：2011-05-17

申请号：US11207036

申请日：2005-08-18

申请人： Xiangrong Cai ,  Haixiang He

发明人： Xiangrong Cai ,  Haixiang He

IPC分类号： H04L12/26 ,  H04L12/28 ,  H04J3/26

CPC分类号： H04L45/16 ,  H04L12/6418 ,  H04L45/04 ,  H04L45/54

摘要： Described is a method for statically or dynamically enabling a DVMRP router in a DVMRP domain to perform a reverse path forwarding check for an external source. A route report is generated for each known external source and injected into the DVMRP domain. Each route report includes routing information for a respective one of the known external sources. In one embodiment, the route report is generated for each network listed in a unicast routing table maintained on a DVMRP multicast border router and each route report includes unicast routing information for each of the networks and an indicator designating that the routing information is derived from unicast routing information. In another embodiment, if it is determined that routing information for an external source of multicast traffic received at a DVMRP border router is not available, the route report is generated at that time and includes a predetermined metric value.

摘要翻译： 描述了一种用于静态或动态地使DVMRP域中的DVMRP路由器对外部源执行反向路径转发检查的方法。 为每个已知的外部源生成路由报告并注入DVMRP域。 每个路线报告包括已知外部源中的相应一个的路由信息​​。 在一个实施例中，为在DVMRP多播边界路由器上维护的单播路由表中列出的每个网络生成路由报告，并且每个路由报告包括每个网络的单播路由信息，以及指示路由信息从单播导出的指示符 路由信息。 在另一实施例中，如果确定在DVMRP边界路由器处接收到的外部多播业务源的路由信息​​不可用，则在该时间生成路由报告并且包括预定度量值。

公开(公告)号：US06721318B1

公开(公告)日：2004-04-13

申请号：US09363610

申请日：1999-07-29

申请人： Xiangrong Cai ,  Shuching Shieh

发明人： Xiangrong Cai ,  Shuching Shieh

IPC分类号： H04L1256

CPC分类号： H04L12/185

摘要： A router is configured with a static membership to a multicast group address and is capable of transmitting a message reporting the static membership to another router.

摘要翻译： 路由器配置为具有组播组地址的静态成员身份，并且能够将报告静态成员资格的消息传送到另一个路由器。

公开(公告)号：US08099516B1

公开(公告)日：2012-01-17

申请号：US10784757

申请日：2004-02-23

申请人： Xiangrong Cai

发明人： Xiangrong Cai

IPC分类号： G06F15/16

CPC分类号： H04L12/185

摘要： A method and apparatus is disclosed by which IGMP Host messaging is translated to PIM messaging for the purposes of efficiently and accurately maintaining group membership data in a multicast network.

摘要翻译： 公开了一种方法和装置，通过该方法和装置将IGMP主机消息转换为PIM消息传送，以便有效和准确地维护组播网络中的组成员资格。

公开(公告)号：US20060072455A1

公开(公告)日：2006-04-06

申请号：US10948582

申请日：2004-09-23

申请人： Xiangrong Cai ,  Sasi Harpanahalli ,  Deepak Seth

发明人： Xiangrong Cai ,  Sasi Harpanahalli ,  Deepak Seth

IPC分类号： H04L12/26

CPC分类号： H04L63/1416 ,  H04L63/1466

摘要： To detect an attack of a network connection, detection of a message containing a sequence number that is within a valid sequence number range is performed, where the message is intended to cause reset of the network connection. The message is dropped, and a counter is incremented to track a number of occurrences of receiving the message in response to detecting that the sequence number in the message is within the valid sequence number range.

摘要翻译： 为了检测网络连接的攻击，执行检测包含有效序列号范围内的序列号的消息，其中消息旨在引起网络连接的重置。 响应于检测到消息中的序列号在有效的序列号范围内，消息被丢弃，并且递增计数器以跟踪接收消息的次数。

公开(公告)号：US07752670B2

公开(公告)日：2010-07-06

申请号：US10948582

申请日：2004-09-23

申请人： Xiangrong Cai ,  Sasi Harpanahalli ,  Deepak Seth

发明人： Xiangrong Cai ,  Sasi Harpanahalli ,  Deepak Seth

IPC分类号： H04L29/06

CPC分类号： H04L63/1416 ,  H04L63/1466

摘要： To detect an attack of a network connection, detection of a message containing a sequence number that is within a valid sequence number range is performed, where the message is intended to cause reset of the network connection. The message is dropped, and a counter is incremented to track a number of occurrences of receiving the message in response to detecting that the sequence number in the message is within the valid sequence number range.

摘要翻译： 为了检测网络连接的攻击，执行检测包含有效序列号范围内的序列号的消息，其中消息旨在引起网络连接的重置。 响应于检测到消息中的序列号在有效的序列号范围内，消息被丢弃，并且递增计数器以跟踪接收消息的次数。

公开(公告)号：US06581175B1

公开(公告)日：2003-06-17

申请号：US09472668

申请日：1999-12-27

申请人： Richard Crump ,  Janet Doong ,  Xiangrong Cai

发明人： Richard Crump ,  Janet Doong ,  Xiangrong Cai

IPC分类号： H04L116

CPC分类号： H04L1/188 ,  H04L1/16 ,  H04L1/1621 ,  H04L1/1671 ,  H04L1/1848 ,  H04L1/1874 ,  H04L2001/0093

摘要： An apparatus and method of requesting retransmission of at least a portion of a message (having a plurality of message segments) from a sender utilizes message units in a memory device for storing data relating to retransmit messages. In particular, each message unit in the memory has data for one message segment. To that end, a retransmit message requesting retransmission of a set of message segments to a given receiver is received from the given receiver. The given retransmit message then is parsed to determine both the identity of the given receiver, and the identity of the set of message segments requested by the given receiver. A message unit then is produced in the memory for each of the set of message segments that does not have an existing message unit in memory. Data representing the identity of the given receiver then is added to all message units for the set of message segments.

摘要翻译： 从发送者请求重发消息（具有多个消息段）的至少一部分的装置和方法利用存储器设备中的消息单元来存储与重传消息有关的数据。 特别地，存储器中的每个消息单元具有用于一个消息段的数据。 为此，从给定的接收机接收到向给定的接收机请求重发一组消息段的重发消息。 然后解析给定的重传消息以确定给定接收机的身份以及给定接收者请求的消息片段集合的身份。 然后在存储器中产生在存储器中不具有现有消息单元的消息段组中的每一个的消息单元。 然后将表示给定接收机的身份的数据添加到消息段集合的所有消息单元中。