公开(公告)号：US08051201B2

公开(公告)日：2011-11-01

申请号：US12709338

申请日：2010-02-19

申请人： Rajkumar Jalan ,  Louis Yun ,  Ivy Pei-Shan Hsu

发明人： Rajkumar Jalan ,  Louis Yun ,  Ivy Pei-Shan Hsu

IPC分类号： G06F15/173 ,  G06F15/16

CPC分类号： H04L12/4633 ,  H04L12/185 ,  H04L12/1886 ,  H04L12/4641 ,  H04L49/354 ,  H04L63/0272

摘要： Multicast capability in a virtual private LAN service (VPLS) is provided in a provider IP/MPLS infrastructure without headend replications by encapsulating a customer data packet to use an established multicast protocol, such as IP multicast. In one example, the customer data packet is encapsulated by an IP header having an IP multicast group address and an Ethernet header. In one implementation, a DNS type mechanism is provided to distribute the IP multicast addresses for VPLS use. Such IP multicast group address can be set aside from an administratively scoped address range. An efficient IP routing algorithm running on the provider's network provides an efficient distribution tree for routing IP-encapsulated customer packet for the VPLS.

摘要翻译： 虚拟专用LAN服务（VPLS）中的组播能力通过封装客户数据包来使用已建立的多播协议（如IP多播），在提供商IP / MPLS架构中提供无前端复制功能。 在一个示例中，客户数据分组由具有IP多播组地址和以太网报头的IP报头来封装。 在一个实现中，提供DNS类型机制来分发用于VPLS使用的IP多播地址。 这样的IP组播组地址可以从管理范围的地址范围来设置。 在提供商网络上运行的高效IP路由算法为VPLS路由IP封装的客户数据包提供了一个有效的分发树。

公开(公告)号：US20120120952A1

公开(公告)日：2012-05-17

申请号：US13278599

申请日：2011-10-21

申请人： Rajkumar Jalan ,  Louis Yun ,  Ivy Pei-Shan Hsu

发明人： Rajkumar Jalan ,  Louis Yun ,  Ivy Pei-Shan Hsu

IPC分类号： H04L12/56

CPC分类号： H04L12/4633 ,  H04L12/185 ,  H04L12/1886 ,  H04L12/4641 ,  H04L49/354 ,  H04L63/0272

摘要： Multicast capability in a virtual private LAN service (VPLS) is provided in a provider IP/MPLS infrastructure without headend replications by encapsulating a customer data packet to use an established multicast protocol, such as IP multicast. In one example, the customer data packet is encapsulated by an IP header having an IP multicast group address and an Ethernet header. In one implementation, a DNS type mechanism is provided to distribute the IP multicast addresses for VPLS use. Such IP multicast group address can be set aside from an administratively scoped address range. An efficient IP routing algorithm running on the provider's network provides an efficient distribution tree for routing IP-encapsulated customer packet for the VPLS.

摘要翻译： 虚拟专用LAN服务（VPLS）中的组播能力通过封装客户数据包来使用已建立的多播协议（如IP多播），在提供商IP / MPLS架构中提供无前端复制功能。 在一个示例中，客户数据分组由具有IP多播组地址和以太网报头的IP报头来封装。 在一个实现中，提供DNS类型机制来分发用于VPLS使用的IP多播地址。 这样的IP组播组地址可以从管理范围的地址范围来设置。 在提供商网络上运行的高效IP路由算法为VPLS路由IP封装的客户数据包提供了一个有效的分配树。

公开(公告)号：US09049047B2

公开(公告)日：2015-06-02

申请号：US13278599

申请日：2011-10-21

申请人： Rajkumar Jalan ,  Louis Yun ,  Ivy Pei-Shan Hsu

发明人： Rajkumar Jalan ,  Louis Yun ,  Ivy Pei-Shan Hsu

IPC分类号： G06F15/16 ,  H04L12/46 ,  H04L12/18 ,  H04L12/931 ,  H04L29/06 ,  H04L12/28

CPC分类号： H04L12/4633 ,  H04L12/185 ,  H04L12/1886 ,  H04L12/4641 ,  H04L49/354 ,  H04L63/0272

摘要： Multicast capability in a virtual private LAN service (VPLS) is provided in a provider IP/MPLS infrastructure without headend replications by encapsulating a customer data packet to use an established multicast protocol, such as IP multicast. In one example, the customer data packet is encapsulated by an IP header having an IP multicast group address and an Ethernet header. In one implementation, a DNS type mechanism is provided to distribute the IP multicast addresses for VPLS use. Such IP multicast group address can be set aside from an administratively scoped address range. An efficient IP routing algorithm running on the provider's network provides an efficient distribution tree for routing IP-encapsulated customer packet for the VPLS.

摘要翻译： 虚拟专用LAN服务（VPLS）中的组播能力通过封装客户数据包来使用已建立的多播协议（如IP多播），在提供商IP / MPLS架构中提供无前端复制功能。 在一个示例中，客户数据分组由具有IP多播组地址和以太网报头的IP报头来封装。 在一个实现中，提供DNS类型机制来分发用于VPLS使用的IP多播地址。 这样的IP组播组地址可以从管理范围的地址范围来设置。 在提供商网络上运行的高效IP路由算法为VPLS路由IP封装的客户数据包提供了一个有效的分配树。

公开(公告)号：US07698455B2

公开(公告)日：2010-04-13

申请号：US10632484

申请日：2003-08-01

申请人： Rajkumar Jalan ,  Louis Yun ,  Ivy Pei-Shan Hsu

发明人： Rajkumar Jalan ,  Louis Yun ,  Ivy Pei-Shan Hsu

IPC分类号： G06F15/173 ,  G06F15/16

CPC分类号： H04L12/4633 ,  H04L12/185 ,  H04L12/1886 ,  H04L12/4641 ,  H04L49/354 ,  H04L63/0272

摘要： Multicast capability in a virtual private LAN service (VPLS) is provided in a provider IP/MPLS infrastructure without headend replications by encapsulating a customer data packet to use an established multicast protocol, such as IP multicast. In one example, the customer data packet is encapsulated by an IP header having an IP multicast group address and an Ethernet header. In one implementation, a DNS type mechanism is provided to distribute the IP multicast addresses for VPLS use. Such IP multicast group address can be set aside from an administratively scoped address range. An efficient IP routing algorithm running on the provider's network provides an efficient distribution tree for routing IP-encapsulated customer packet for the VPLS.

摘要翻译： 虚拟专用LAN服务（VPLS）中的组播能力通过封装客户数据包来使用已建立的多播协议（如IP多播），在提供商IP / MPLS架构中提供无前端复制功能。 在一个示例中，客户数据分组由具有IP多播组地址和以太网报头的IP报头来封装。 在一个实现中，提供DNS类型机制来分发用于VPLS使用的IP多播地址。 这样的IP组播组地址可以从管理范围的地址范围来设置。 在提供商网络上运行的高效IP路由算法为VPLS路由IP封装的客户数据包提供了一个有效的分配树。

公开(公告)号：US20100220723A1

公开(公告)日：2010-09-02

申请号：US12709338

申请日：2010-02-19

申请人： Rajkumar Jalan ,  Louis Yun ,  Ivy Pei-Shan Hsu

发明人： Rajkumar Jalan ,  Louis Yun ,  Ivy Pei-Shan Hsu

IPC分类号： H04L12/56 ,  H04L12/28

CPC分类号： H04L12/4633 ,  H04L12/185 ,  H04L12/1886 ,  H04L12/4641 ,  H04L49/354 ,  H04L63/0272

摘要： Multicast capability in a virtual private LAN service (VPLS) is provided in a provider IP/MPLS infrastructure without headend replications by encapsulating a customer data packet to use an established multicast protocol, such as IP multicast. In one example, the customer data packet is encapsulated by an IP header having an IP multicast group address and an Ethernet header. In one implementation, a DNS type mechanism is provided to distribute the IP multicast addresses for VPLS use. Such IP multicast group address can be set aside from an administratively scoped address range. An efficient IP routing algorithm running on the provider's network provides an efficient distribution tree for routing IP-encapsulated customer packet for the VPLS.

摘要翻译： 虚拟专用LAN服务（VPLS）中的组播能力通过封装客户数据包来使用已建立的多播协议（如IP多播），在提供商IP / MPLS架构中提供无前端复制功能。 在一个示例中，客户数据分组由具有IP多播组地址和以太网报头的IP报头来封装。 在一个实现中，提供DNS类型机制来分发用于VPLS使用的IP多播地址。 这样的IP组播组地址可以从管理范围的地址范围来设置。 在提供商网络上运行的高效IP路由算法为VPLS路由IP封装的客户数据包提供了一个有效的分配树。

公开(公告)号：US08593987B2

公开(公告)日：2013-11-26

申请号：US13185885

申请日：2011-07-19

申请人： Andrew Tai-Chin Kuo ,  Ivy Pei-Shan Hsu ,  Jordi Moncada-Elias ,  Rajkumar Jalan ,  Gurudeep Kamat

发明人： Andrew Tai-Chin Kuo ,  Ivy Pei-Shan Hsu ,  Jordi Moncada-Elias ,  Rajkumar Jalan ,  Gurudeep Kamat

IPC分类号： H04L12/28 ,  H04J1/16

CPC分类号： H04L49/552 ,  H04L43/0876 ,  H04L45/00 ,  H04L45/18 ,  H04L45/32 ,  H04L45/48 ,  H04L45/586 ,  H04L69/40

摘要： Systems and methods are described for providing network route redundancy through Layer 2 devices, such as a loop free Layer 2 network having a plurality of switching devices. A virtual switch is coupled to the loop free Layer 2 network, the virtual switch having two or more switches configured to transition between master and backup modes to provide redundant support for the loop free Layer 2 network, the switches communicating their status through use of a plurality of redundancy control packets. The system also includes means for allowing the redundancy control packets to be flooded through the Layer 2 network. The means may include time-to-live data attached to the redundancy control packet which is decremented only when the packets are transferred through devices which are configured to recognize the protocol used in redundancy control packets.

公开(公告)号：US08014301B2

公开(公告)日：2011-09-06

申请号：US12477069

申请日：2009-06-02

申请人： Andrew Tai-Chin Kuo ,  Ivy Pei-Shan Hsu ,  Jordi Moncada-Elias ,  Rajkumar Jalan ,  Gurudeep Kamat

发明人： Andrew Tai-Chin Kuo ,  Ivy Pei-Shan Hsu ,  Jordi Moncada-Elias ,  Rajkumar Jalan ,  Gurudeep Kamat

IPC分类号： H04L12/56 ,  H04J1/16

CPC分类号： H04L49/552 ,  H04L43/0876 ,  H04L45/00 ,  H04L45/18 ,  H04L45/32 ,  H04L45/48 ,  H04L45/586 ,  H04L69/40

摘要： Systems and methods are described for providing network route redundancy through Layer 2 devices, such as a loop free Layer 2 network having a plurality of switching devices. A virtual switch is coupled to the loop free Layer 2 network, the virtual switch having two or more switches configured to transition between master and backup modes to provide redundant support for the loop free Layer 2 network, the switches communicating their status through use of a plurality of redundancy control packets. The system also includes means for allowing the redundancy control packets to be flooded through the Layer 2 network. The means may include time-to-live data attached to the redundancy control packet which is decremented only when the packets are transferred through devices which are configured to recognize the protocol used in redundancy control packets.

摘要翻译： 描述了通过第2层设备提供网络路由冗余的系统和方法，例如具有多个交换设备的无环路的二层网络。 虚拟交换机耦合到无环路的二层网络，虚拟交换机具有两个或多个交换机，配置为在主模式和备用模式之间转换，为无环路的二层网络提供冗余支持，交换机通过使用 多个冗余控制分组。 该系统还包括允许冗余控制分组通过第2层网络淹没的装置。 该装置可以包括附加到冗余控制分组的生存时间数据，只有当分组通过被配置为识别在冗余控制分组中使用的协议的设备传送时，该冗余控制分组才递减。

公开(公告)号：US20120008635A1

公开(公告)日：2012-01-12

申请号：US13185885

申请日：2011-07-19

申请人： Andrew Tai-Chin Kuo ,  Ivy Pei-Shan Hsu ,  Jordi Moncada-Elias ,  Rajkumar Jalan ,  Gurudeep Kamat

发明人： Andrew Tai-Chin Kuo ,  Ivy Pei-Shan Hsu ,  Jordi Moncada-Elias ,  Rajkumar Jalan ,  Gurudeep Kamat

IPC分类号： H04L12/56

CPC分类号： H04L49/552 ,  H04L43/0876 ,  H04L45/00 ,  H04L45/18 ,  H04L45/32 ,  H04L45/48 ,  H04L45/586 ,  H04L69/40

摘要： Systems and methods are described for providing network route redundancy through Layer 2 devices, such as a loop free Layer 2 network having a plurality of switching devices. A virtual switch is coupled to the loop free Layer 2 network, the virtual switch having two or more switches configured to transition between master and backup modes to provide redundant support for the loop free Layer 2 network, the switches communicating their status through use of a plurality of redundancy control packets. The system also includes means for allowing the redundancy control packets to be flooded through the Layer 2 network. The means may include time-to-live data attached to the redundancy control packet which is decremented only when the packets are transferred through devices which are configured to recognize the protocol used in redundancy control packets.

摘要翻译： 描述了通过第2层设备提供网络路由冗余的系统和方法，例如具有多个交换设备的无环路的二层网络。 虚拟交换机耦合到无环路的二层网络，虚拟交换机具有两个或多个交换机，配置为在主模式和备用模式之间转换，为无环路的二层网络提供冗余支持，交换机通过使用 多个冗余控制分组。 该系统还包括允许冗余控制分组通过第2层网络淹没的装置。 该装置可以包括附加到冗余控制分组的生存时间数据，只有当分组通过被配置为识别在冗余控制分组中使用的协议的设备传送时，该冗余控制分组才递减。

公开(公告)号：US08024441B2

公开(公告)日：2011-09-20

申请号：US11707697

申请日：2007-02-16

申请人： Sunanda Lakshmi Kommula ,  Ivy Pei-Shan Hsu ,  Rajkumar Jalan ,  David Chun Ying Cheung

发明人： Sunanda Lakshmi Kommula ,  Ivy Pei-Shan Hsu ,  Rajkumar Jalan ,  David Chun Ying Cheung

IPC分类号： G06F15/173

CPC分类号： H04L67/1002 ,  H04L67/1008 ,  H04L67/1012 ,  H04L67/1021

摘要： A global server load-balancing (GSLB) switch serves as a proxy to an authoritative DNS and communicates with numerous site switches that are coupled to host servers serving specific applications. The GSLB switch receives from site switches operational information regarding host servers within the site switches neighborhood. When a client program requests a resolution of a host name, the GSLB switch, acting as a proxy of an authoritative DNS, returns one or more ordered IP addresses for the host name. The IP addresses are ordered using metrics that include the information collected from the site switches. In one instance, the GSLB switch places the address that is deemed “best” at the top of the list.

摘要翻译： 全局服务器负载平衡（GSLB）交换机用作授权DNS的代理，并与多个站点交换机进行通信，这些站点交换机与服务于特定应用程序的主机服务器相连。 GSLB交换机从站点交换机接收关于站点交换机附近的主机服务器的操作信息。 当客户端程序请求解析主机名时，作为权威DNS的代理的GSLB交换机返回主机名的一个或多个有序IP地址。 IP地址使用包含从站点交换机收集的信息的度量来排序。 在一个实例中，GSLB开关将地址视为“最佳”位于列表的顶部。

公开(公告)号：US07254626B1

公开(公告)日：2007-08-07

申请号：US10206580

申请日：2002-07-25

申请人： Sunanda Lakshmi Kommula ,  Ivy Pei-Shan Hsu ,  Rajkumar Jalan ,  David Chun Ying Cheung

发明人： Sunanda Lakshmi Kommula ,  Ivy Pei-Shan Hsu ,  Rajkumar Jalan ,  David Chun Ying Cheung

IPC分类号： G06F15/173 ,  G06F15/16

CPC分类号： H04L67/1002 ,  H04L67/1008 ,  H04L67/1012 ,  H04L67/1021

摘要： A global server load-balancing (GSLB) switch serves as a proxy to an authoritative DNS and communicates with numerous site switches that are coupled to host servers serving specific applications. The GSLB switch receives from site switches operational information regarding host servers within the site switches neighborhood. When a client program requests a resolution of a host name, the GSLB switch, acting as a proxy of an authoritative DNS, returns one or more ordered IP addresses for the host name. The IP addresses are ordered using metrics that include the information collected from the site switches. In one instance, the GSLB switch places the address that is deemed “best” at the top of the list.

摘要翻译： 全局服务器负载平衡（GSLB）交换机用作授权DNS的代理，并与多个站点交换机进行通信，这些站点交换机与服务于特定应用程序的主机服务器相连。 GSLB交换机从站点交换机接收关于站点交换机附近的主机服务器的操作信息。 当客户端程序请求解析主机名时，作为权威DNS的代理的GSLB交换机返回主机名的一个或多个有序IP地址。 IP地址使用包含从站点交换机收集的信息的度量来排序。 在一个实例中，GSLB开关将地址视为“最佳”位于列表的顶部。