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1. 发明授权

US07966409B1 Routing protocol based redundancy design for shared-access networks 有权
标题翻译：用于共享接入网络的基于路由协议的冗余设计
公开(公告)号：US07966409B1
公开(公告)日：2011-06-21
申请号：US10899668
申请日：2004-07-26
申请人： Feisal Daruwalla , James R. Forster , Guenter E. Roeck , Richard M. Woundy , Michael A. Thomas
发明人： Feisal Daruwalla , James R. Forster , Guenter E. Roeck , Richard M. Woundy , Michael A. Thomas
IPC分类号： G06F15/16
CPC分类号： H04L45/28 , H04L12/2801 , H04L45/00 , H04L45/22 , H04L45/586 , H04M3/08 , H04N7/17309 , H04N21/2404 , H04N21/4788 , H04N21/6118 , H04N21/6168 , H04N21/6402 , H04N21/64322
摘要： A protection CMTS is available to immediately service a cable modem should that modem's service from a working CMTS fail for any reason. To speed the service transfer (cutover) from the working CMTS to the protection CMTS, the cable modem may preregister with the protection CMTS well before the cutover becomes necessary. The cable modem's registration with both the working CMTS and the protection CMTS preferably employs a single IP address, so that the cable modem need not obtain a new IP address during cutover. While the cable modem may register with both the working CMTS and the protection CMTS, the devices are designed or configured so that only the working CMTS injects a host route for the cable modem into the appropriate routing protocol. Only after cutover to the protection CMTS does the protection CMTS inject its host route.
摘要翻译：如果调制解调器从工作CMTS的服务由于任何原因而失败，则保护CMTS可用于立即服务有线调制解调器。为了加速从工作CMTS到保护CMTS的业务传输（切换），电缆调制解调器可以在割接变得必要之前预先注册保护CMTS。电缆调制解调器与工作CMTS和保护CMTS的注册优选地采用单个IP地址，使得电缆调制解调器在切换期间不需要获得新的IP地址。当电缆调制解调器可以向工作CMTS和保护CMTS两者注册时，设备被设计或配置为使得只有工作CMTS将电缆调制解调器的主机路由注入适当的路由协议。只有在切换到保护CMTS之后，保护CMTS才会注入其主机路由。

2. 发明授权

US06839829B1 Routing protocol based redundancy design for shared-access networks 有权
标题翻译：用于共享接入网络的基于路由协议的冗余设计
公开(公告)号：US06839829B1
公开(公告)日：2005-01-04
申请号：US09484189
申请日：2000-01-18
申请人： Feisal Daruwalla , James R. Forster , Guenter E. Roeck , Richard M. Woundy , Michael A. Thomas
发明人： Feisal Daruwalla , James R. Forster , Guenter E. Roeck , Richard M. Woundy , Michael A. Thomas
IPC分类号： H04L12/28 , H04L12/56 , H04N7/173 , G06F15/177 , G06F11/273 , G06F15/173
CPC分类号： H04L45/28 , H04L12/2801 , H04L45/00 , H04L45/22 , H04L45/586 , H04M3/08 , H04N7/17309 , H04N21/2404 , H04N21/4788 , H04N21/6118 , H04N21/6168 , H04N21/6402 , H04N21/64322
摘要： A protection CMTS is available to immediately service a cable modem should that modem's service from a working CMTS fail for any reason. To speed the service transfer (cutover) from the working CMTS to the protection CMTS, the cable modem may preregister with the protection CMTS well before the cutover becomes necessary. The cable modem's registration with both the working CMTS and the protection CMTS preferably employs a single IP address, so that the cable modem need not obtain a new IP address during cutover. While the cable modem may register with both the working CMTS and the protection CMTS, the devices are designed or configured so that only the working CMTS injects a host route for the cable modem into the appropriate routing protocol. Only after cutover to the protection CMTS does the protection CMTS inject its host route.
摘要翻译：如果调制解调器从工作CMTS的服务由于任何原因而失败，则保护CMTS可用于立即服务有线调制解调器。为了加速从工作CMTS到保护CMTS的业务传输（切换），电缆调制解调器可以在割接变得必要之前预先注册保护CMTS。电缆调制解调器与工作CMTS和保护CMTS的注册优选地采用单个IP地址，使得电缆调制解调器在切换期间不需要获得新的IP地址。当电缆调制解调器可以向工作CMTS和保护CMTS两者注册时，设备被设计或配置为使得只有工作CMTS将电缆调制解调器的主机路由注入适当的路由协议。只有在切换到保护CMTS之后，保护CMTS才会注入其主机路由。

3. 发明授权

US07068712B1 Cable network redundancy architecture 有权
标题翻译：有线网络冗余架构
公开(公告)号：US07068712B1
公开(公告)日：2006-06-27
申请号：US09484612
申请日：2000-01-18
申请人： Joanna Qun Zang , Feisal Daruwalla , James R. Forster , Guenter E. Roeck , Joseph O'Donnell , John Chen , Mark Millet
发明人： Joanna Qun Zang , Feisal Daruwalla , James R. Forster , Guenter E. Roeck , Joseph O'Donnell , John Chen , Mark Millet
IPC分类号： H04B1/38
CPC分类号： G06F11/2005 , H04L29/12009 , H04L61/00 , H04N7/173 , H04N21/64738
摘要： A CMTS redundancy technique requires at least two CMTS interfaces (e.g., line cards) on one or more CMTS chassis at the head end of a cable network. One of the CMTSs serves as a backup or “protecting” CMTS. When another CMTS (a “working” CMTS) becomes unavailable to service its group of cable modems, the protecting CMTS takes over service to those cable modems. The SWITCHOVER takes place transparently (or nearly transparently) to the cable modems. The protecting CMTS provides service on the same downstream channel as used by the working CMTS. The cable modems need not modify any settings pursuant to their cable modem communication protocol (e.g., DOCSIS ranging). This transparency to the cable modems is realized by keeping the working and protecting CMTSs in synchronization regarding service parameters for the cable modems. In other words, the protecting CMTS maintains a list of current parameters for allowing service to the cable modems.
摘要翻译： CMTS冗余技术在电缆网络的头端的一个或多个CMTS机架上需要至少两个CMTS接口（例如，线路卡）。其中一个CMTS作为备份或“保护”CMTS。当另一个CMTS（“工作”CMTS）变得不可用来为其组的电缆调制解调器服务时，保护CMTS将接管这些电缆调制解调器的服务。 SWITCHOVER透明地（或几乎透明地）发送到电缆调制解调器。保护CMTS在工作CMTS使用的同一下行信道上提供服务。电缆调制解调器不需要根据其电缆调制解调器通信协议（例如，DOCSIS测距）来修改任何设置。电缆调制解调器的透明度通过保持工作和保护CMTS与电缆调制解调器的服务参数同步而实现。换句话说，保护CMTS维护用于允许对电缆调制解调器的服务的当前参数的列表。

4. 再颁专利

USRE44661E1 Method for a cable modem to rapidly switch to a backup CMTS 有权
标题翻译：电缆调制解调器快速切换到备份CMTS的方法
公开(公告)号：USRE44661E1
公开(公告)日：2013-12-24
申请号：US11636725
申请日：2006-12-06
申请人： Feisal Daruwalla , James R. Forster , Guenter E. Roeck , John T. Chapman , Joanna Qun Zang , Yong Lu
发明人： Feisal Daruwalla , James R. Forster , Guenter E. Roeck , John T. Chapman , Joanna Qun Zang , Yong Lu
IPC分类号： H04L12/26 , H04J1/16 , G06F11/00 , G08C15/00 , G01R31/08
CPC分类号： H04L45/00 , G06F11/2005 , H04L45/22 , H04L45/28
摘要： A protection CMTS is available to immediately service a cable modem should that modem's service from a working CMTS fail for any reason. To speed the service transfer (cutover) from the working CMTS to the protection CMTS, the cable modem may preregister with the protection CMTS well before the cutover becomes necessary. The cable modem's registration with both the working CMTS and the protection CMTS preferably employs a single IP address, so that the cable modem need not obtain a new IP address during cutover. While the cable modem may register with both the working CMTS and the protection CMTS, the devices are designed or configured so that only the working CMTS injects a host route for the cable modem into the appropriate routing protocol. Only after cutover to the protection CMTS does the protection CMTS inject its host route.
摘要翻译：如果调制解调器从工作CMTS的服务由于任何原因而失败，则保护CMTS可用于立即服务有线调制解调器。为了加速从工作CMTS到保护CMTS的业务传输（切换），电缆调制解调器可以在割接变得必要之前预先注册保护CMTS。电缆调制解调器与工作CMTS和保护CMTS的注册优选地采用单个IP地址，使得电缆调制解调器在切换期间不需要获得新的IP地址。当电缆调制解调器可以向工作CMTS和保护CMTS两者注册时，设备被设计或配置为使得只有工作CMTS将电缆调制解调器的主机路由注入适当的路由协议。只有在切换到保护CMTS之后，保护CMTS才会注入其主机路由。

5. 发明授权

US07058007B1 Method for a cable modem to rapidly switch to a backup CMTS 失效
公开(公告)号：US07058007B1
公开(公告)日：2006-06-06
申请号：US09484611
申请日：2000-01-18
申请人： Feisal Daruwalla , James R. Forster , Guenter E. Roeck , Joanna Qun Zang , Yong Lu
发明人： Feisal Daruwalla , James R. Forster , Guenter E. Roeck , Joanna Qun Zang , Yong Lu
IPC分类号： H04L12/26 , H04J1/16 , G06F11/00 , G08C15/00 , G01R31/08
CPC分类号： H04L45/00 , G06F11/2005 , H04L45/22 , H04L45/28
摘要： A protection CMTS is available to immediately service a cable modem should that modem's service from a working CMTS fail for any reason. To speed the service transfer (cutover) from the working CMTS to the protection CMTS, the cable modem may preregister with the protection CMTS well before the cutover becomes necessary. The cable modem's registration with both the working CMTS and the protection CMTS preferably employs a single IP address, so that the cable modem need not obtain a new IP address during cutover. While the cable modem may register with both the working CMTS and the protection CMTS, the devices are designed or configured so that only the working CMTS injects a host route for the cable modem into the appropriate routing protocol. Only after cutover to the protection CMTS does the protection CMTS inject its host route.

6. 发明授权

US06693878B1 Technique and apparatus for using node ID as virtual private network (VPN) identifiers 有权
标题翻译：使用节点ID作为虚拟专用网（VPN）标识符的技术和装置
公开(公告)号：US06693878B1
公开(公告)日：2004-02-17
申请号：US09418469
申请日：1999-10-15
申请人： Feisal Y. Daruwalla , James R. Forster , Mark W. Litwack
发明人： Feisal Y. Daruwalla , James R. Forster , Mark W. Litwack
IPC分类号： H04L1256
CPC分类号： H04L45/00 , H04L12/2801 , H04L12/4641 , H04L45/50 , H04L63/0272
摘要： A technique is provided for managing VPN packet flows over shared access data networks. Each node in the shared access network typically has an identifier or ID associated with it which is used at a Head End of the shared access network to uniquely identify that particular node from the other nodes in the network. According to the technique of the present invention, the node ID may be used at the Head End of the network to identify not only the corresponding node, but also to identify any virtual private networks (VPNs) of which the corresponding node is a member. Using the technique of the present invention, nodes which are members of the same VPN within a shared access network may exchange packets in a manner which does not require the packets to be routed outside the shared access network.
摘要翻译：提供了一种用于管理共享访问数据网络上的VPN数据包流的技术。共享接入网络中的每个节点通常具有与其相关联的标识符或ID，其在共享接入网络的头端使用以从网络中的其他节点唯一地标识该特定节点。根据本发明的技术，可以在网络的头端使用节点ID来识别不仅对应的节点，而且识别相应节点是其成员的任何虚拟专用网络（VPN）。使用本发明的技术，在共享接入网络内作为同一VPN的成员的节点可以以不需要在共享接入网络外路由的分组的方式来交换分组。

7. 发明授权

US07974201B1 Technique and apparatus for using node ID as virtual private network (VPN) identifiers 有权
标题翻译：使用节点ID作为虚拟专用网（VPN）标识符的技术和装置
公开(公告)号：US07974201B1
公开(公告)日：2011-07-05
申请号：US10758434
申请日：2004-01-14
申请人： Feisal Y. Daruwalla , James R. Forster , Mark W. Litwack
发明人： Feisal Y. Daruwalla , James R. Forster , Mark W. Litwack
IPC分类号： H04J1/16
CPC分类号： H04L45/00 , H04L12/2801 , H04L12/4641 , H04L45/50 , H04L63/0272
摘要： A technique is provided for managing VPN packet flows over shared access data networks. Each node in the shared access network typically has an identifier or ID associated with it which is used at a Head End of the shared access network to uniquely identify that particular node from the other nodes in the network. According to the technique of the present invention, the node ID may be used at the Head End of the network to identify not only the corresponding node, but also to identify any virtual private networks (VPNs) of which the corresponding node is a member. Using the technique of the present invention, nodes which are members of the same VPN within a shared access network may exchange packets in a manner which does not require the packets to be routed outside the shared access network.
摘要翻译：提供了一种用于管理共享访问数据网络上的VPN数据包流的技术。共享接入网络中的每个节点通常具有与其相关联的标识符或ID，其在共享接入网络的头端使用以从网络中的其他节点唯一地标识该特定节点。根据本发明的技术，可以在网络的头端使用节点ID来识别不仅对应的节点，而且识别相应节点是其成员的任何虚拟专用网络（VPN）。使用本发明的技术，在共享接入网络内作为同一VPN的成员的节点可以以不需要在共享接入网络外路由的分组的方式来交换分组。

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