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1. 发明授权

US10270622B2 Method for enabling mobility of client devices in large scale unified networks 有权
公开(公告)号：US10270622B2
公开(公告)日：2019-04-23
申请号：US12775816
申请日：2010-05-07
申请人： Vivek L. Atreya , Shashi H. Ankaiah , Seemant Choudhary , Kumar Das Karunakaran , Udaya N. Shankar
发明人： Vivek L. Atreya , Shashi H. Ankaiah , Seemant Choudhary , Kumar Das Karunakaran , Udaya N. Shankar
IPC分类号： H04W28/00 , H04L12/46 , H04W8/08 , H04L12/751
摘要： Embodiments herein include systems and methods for providing a mechanism to enable smooth, seamless, and reliable connectivity for wireless devices in a unified network. The system supports roaming of mobile units across mobility switches. A given mobile unit can retain its IP address in both intra-subnet and inter-subnet roaming scenarios. The given mobile unit also retains its membership to a mobility VLAN to which it had been assigned, even during roaming scenarios. Embodiments include a framework for wireless switches to advertise VLANs they support to peer wireless switches in the mobility domain, and to advertise their capability to act as VLAN servers for those VLANs. Embodiments support VLAN membership management capabilities that allow access points and peer wireless switches to request wireless switches to add VLANs to the tunnels they share.

2. 发明申请

US20100290446A1 METHOD FOR ENABLING MOBILITY OF CLIENT DEVICES IN LARGE SCALE UNIFIED NETWORKS 审中-公开
标题翻译：在大规模统一网络中实现客户端设备移动性的方法
公开(公告)号：US20100290446A1
公开(公告)日：2010-11-18
申请号：US12775816
申请日：2010-05-07
申请人： Vivek L. Atreya , Shashi H. Ankaiah , Seemant Choudhary , Kumar Das Karunakaran , Udaya N. Shankar
发明人： Vivek L. Atreya , Shashi H. Ankaiah , Seemant Choudhary , Kumar Das Karunakaran , Udaya N. Shankar
IPC分类号： H04W28/00
CPC分类号： H04L12/4679 , H04L12/4633 , H04L45/02 , H04L2212/00 , H04W8/08
摘要： Embodiments herein include systems and methods for providing a mechanism to enable smooth, seamless, and reliable connectivity for wireless devices in a unified network. The system supports roaming of mobile units across mobility switches. A given mobile unit can retain its IP address in both intra-subnet and inter-subnet roaming scenarios. The given mobile unit also retains its membership to a mobility VLAN to which it had been assigned, even during roaming scenarios. Embodiments include a framework for wireless switches to advertise VLANs they support to peer wireless switches in the mobility domain, and to advertise their capability to act as VLAN servers for those VLANs. Embodiments support VLAN membership management capabilities that allow access points and peer wireless switches to request wireless switches to add VLANs to the tunnels they share.
摘要翻译：本文的实施例包括用于提供机制以实现统一网络中的无线设备的平滑，无缝和可靠连接的系统和方法。该系统支持跨越移动交换机的移动单元漫游。给定的移动单元可以在子网内和子网间漫游场景中保留其IP地址。给定的移动单元也保留其分配给它的移动VLAN的成员资格，即使在漫游情况下也是如此。实施例包括用于无线交换机向移动性域中的对等无线交换机通告VLAN的框架，并且宣布其作为这些VLAN的VLAN服务器的能力。实施例支持VLAN成员资格管理功能，允许接入点和对等无线交换机请求无线交换机向其共享隧道添加VLAN。

3. 发明申请

US20100290385A1 PREVENTING PACKET LOOPS IN UNIFIED NETWORKS 有权
标题翻译：防止在统一网络中的包包
公开(公告)号：US20100290385A1
公开(公告)日：2010-11-18
申请号：US12772299
申请日：2010-05-03
申请人： Shashi H. Ankaiah , Vivek L. Atreya , Kumar Das Karunakaran , Seemant Choudhary
发明人： Shashi H. Ankaiah , Vivek L. Atreya , Kumar Das Karunakaran , Seemant Choudhary
IPC分类号： H04J3/08 , H04W4/00
CPC分类号： H04L45/18 , H04L12/4641 , H04L45/04 , H04W40/00
摘要： Unified mobility switches often define a virtual LAN (VLAN), including a combination of mobility tunnels and access tunnels, via which packets are transported to a mobile device over a combination of physical connections and wireless links. A unified switch may have multiple ports available to route a packet to a particular destination, since the unified switches identify routing paths for both physical connections and VLANs. A particular unified switch may therefore have multiple routes to a common destination, which can lead to a routing loop across a network of switches supporting both physical and virtual connections. A unified mobility switch provides loop detection and prevention through a set of rules for qualifying connections as virtual tunnels or physical connections, and defining a single path where multiple potential paths exist.
摘要翻译：统一移动交换机通常定义虚拟LAN（VLAN），包括移动隧道和接入隧道的组合，通过物理连接和无线链路的组合，将数据包传输到移动设备。统一交换机可能有多个端口可用于将数据包路由到特定的目的地，因为统一交换机可以识别物理连接和VLAN两者的路由路径。因此，特定的统一交换机可以具有到公共目的地的多条路由，这可以导致跨越支持物理和虚拟连接的交换机的网络的路由环路。统一的移动交换机通过一组用于将连接限定为虚拟隧道或物理连接的规则，并且定义存在多个潜在路径的单个路径来提供循环检测和预防。

4. 发明授权

US08478854B2 Tolerant device licensing in a distributed environment 有权
标题翻译：在分布式环境中允许设备许可
公开(公告)号：US08478854B2
公开(公告)日：2013-07-02
申请号：US12775031
申请日：2010-05-06
申请人： Kumara Das Karunakaran , Vivek L. Atreya , Shashi H. Ankaiah , Seemant Choudhary
发明人： Kumara Das Karunakaran , Vivek L. Atreya , Shashi H. Ankaiah , Seemant Choudhary
IPC分类号： G06F15/173
CPC分类号： H04W24/04
摘要： Methods, apparatus and a computer program product provide for a Tolerant License Manager that defines a cluster of a plurality of network controllers, wherein each respective network controller contributes at least one license to a current total amount of licenses in a license pool. The Tolerant License Manager identifies at least one threatened access point upon detecting a first network controller has become unavailable. Each threatened access point comprises any access point connected to the first network controller when the first network controller becomes unavailable. The Tolerant License Manager establishes (and/or) approves a connection between a back-up controller and the threatened access point(s). While the first network controller is unavailable, the Tolerant License Manager allocates a license to each threatened access point via the back-up network controller.
摘要翻译：方法，装置和计算机程序产品为容许许可管理器提供了一个定义多个网络控制器的集群的容许许可证管理器，其中每个相应的网络控制器向许可证池中当前的总许可数量贡献至少一个许可证。检测到第一个网络控制器变得不可用时，容许许可证管理器会识别至少一个受威胁的接入点。每个受威胁的接入点包括当第一网络控制器变得不可用时连接到第一网络控制器的任何接入点。容许许可证管理器建立（和/或）批准备用控制器与受威胁的接入点之间的连接。当第一个网络控制器不可用时，容许许可证管理器通过备份网络控制器向每个受威胁的接入点分配许可证。

5. 发明申请

US20100293250A1 METHOD TO ALLOW SEAMLESS CONNECTIVITY FOR WIRELESS DEVICES IN DHCP SNOOPING/DYNAMIC ARP INSPECTION/IP SOURCE GUARD ENABLED UNIFIED NETWORK 有权
标题翻译：在DHCP SNOOPING /动态ARP检测中允许无线设备的无缝连接的方法/ IP源保护启用统一网络
公开(公告)号：US20100293250A1
公开(公告)日：2010-11-18
申请号：US12778573
申请日：2010-05-12
申请人： Shashi H. Ankaiah , Seemant Choudhary , Udaya N. Shankar
发明人： Shashi H. Ankaiah , Seemant Choudhary , Udaya N. Shankar
IPC分类号： G06F15/16 , G06F21/00 , G06F15/177
CPC分类号： H04L12/56 , H04L63/101 , H04L2212/00 , H04W12/08
摘要： Techniques disclosed herein include systems and methods for providing a mechanism to enable smooth, seamless, and reliable connectivity for wireless devices in a unified network, such as networks that apply a given security policy to both wired and wireless devices. The system supports roaming of mobile units across mobility switches. A given mobile unit can retain its IP address in both intra-subnet and inter-subnet roaming scenarios. The given mobile unit also retains its membership to a mobility VLAN to which the mobile unit had been assigned, even during roaming scenarios. The system moves or propagates IP address to MAC address bindings from one network to another network within a mobility domain. As soon as a mobile user roams to another network, authentication information is readily available to enable immediate connection to the new network to begin sending and receiving data traffic. The mobile unit can be using either static IP addressing, or can dynamically acquire IP addresses through DHCP.
摘要翻译：本文公开的技术包括用于提供机制以实现统一网络中的无线设备的平滑，无缝和可靠连接的系统和方法，诸如将给定安全策略应用于有线和无线设备的网络。该系统支持跨越移动交换机的移动单元漫游。给定的移动单元可以在子网内和子网间漫游场景中保留其IP地址。即使在漫游情况下，给定的移动单元也保留其分配给移动单元的移动VLAN的成员资格。系统将IP地址移动或传播到移动域内的一个网络到另一个网络的MAC地址绑定。一旦移动用户漫游到另一个网络，认证信息就可以随时获得，以便能够立即连接到新网络，开始发送和接收数据流量。移动单元可以使用静态IP寻址，也可以通过DHCP动态获取IP地址。

6. 发明授权

US09755899B2 Generation and usage of mobility VLAN ID version value 有权
公开(公告)号：US09755899B2
公开(公告)日：2017-09-05
申请号：US12777028
申请日：2010-05-10
申请人： William Stanislaus , Seemant Choudhary , Vivek L. Atreya , Shashi H. Ankaiah
发明人： William Stanislaus , Seemant Choudhary , Vivek L. Atreya , Shashi H. Ankaiah
IPC分类号： H04L12/24 , H04L12/46
CPC分类号： H04L41/082 , H04L12/4641
摘要： A mobility network architecture includes a control plane and data plane. The control plane supports notification of VLAN configurations. The data plane supports routing of data amongst VLANs. Each VLAN has an associated identifier value as well as a version number. The version number for a respective VLAN can be updated to a new value each time there is a change to the VLAN. Typically, a controller communicates over the control plane to notify each member switch when a version number has changed for a VLAN. If controller notification fails, a member switch can receive a notification from a neighboring switch that the version number for a VLAN has been modified. In response to detecting such a condition, the switch receiving the notification can prevent forwarding of data even though the switch does not receive notification from the controller that the version number for the VLAN has changed.

7. 发明授权

US08380819B2 Method to allow seamless connectivity for wireless devices in DHCP snooping/dynamic ARP inspection/IP source guard enabled unified network 有权
标题翻译：方法允许无线设备在DHCP Snooping /动态ARP检测/ IP源保护启用统一网络中实现无缝连接
公开(公告)号：US08380819B2
公开(公告)日：2013-02-19
申请号：US12778573
申请日：2010-05-12
申请人： Shashi H. Ankaiah , Seemant Choudhary , Udaya N. Shankar
发明人： Shashi H. Ankaiah , Seemant Choudhary , Udaya N. Shankar
IPC分类号： G06F15/16
CPC分类号： H04L12/56 , H04L63/101 , H04L2212/00 , H04W12/08
摘要： Techniques disclosed herein include systems and methods for providing a mechanism to enable smooth, seamless, and reliable connectivity for wireless devices in a unified network, such as networks that apply a given security policy to both wired and wireless devices. The system supports roaming of mobile units across mobility switches. A given mobile unit can retain its IP address in both intra-subnet and inter-subnet roaming scenarios. The given mobile unit also retains its membership to a mobility VLAN to which the mobile unit had been assigned, even during roaming scenarios. The system moves or propagates IP address to MAC address bindings from one network to another network within a mobility domain. As soon as a mobile user roams to another network, authentication information is readily available to enable immediate connection to the new network to begin sending and receiving data traffic. The mobile unit can be using either static IP addressing, or can dynamically acquire IP addresses through DHCP.
摘要翻译：本文公开的技术包括用于提供机制以实现统一网络中的无线设备的平滑，无缝和可靠连接的系统和方法，诸如将给定安全策略应用于有线和无线设备的网络。该系统支持跨越移动交换机的移动单元漫游。给定的移动单元可以在子网内和子网间漫游场景中保留其IP地址。即使在漫游情况下，给定的移动单元也保留其分配给移动单元的移动VLAN的成员资格。系统将IP地址移动或传播到移动域内的一个网络到另一个网络的MAC地址绑定。一旦移动用户漫游到另一个网络，认证信息就可以随时获得，以便能够立即连接到新网络，开始发送和接收数据流量。移动单元可以使用静态IP寻址，也可以通过DHCP动态获取IP地址。

8. 发明授权

US08300614B2 Preventing packet loops in unified networks 有权
标题翻译：防止统一网络中的数据包循环
公开(公告)号：US08300614B2
公开(公告)日：2012-10-30
申请号：US12772299
申请日：2010-05-03
申请人： Shashi H. Ankaiah , Vivek L. Atreya , Kumara Das Karunakaran , Seemant Choudhary
发明人： Shashi H. Ankaiah , Vivek L. Atreya , Kumara Das Karunakaran , Seemant Choudhary
IPC分类号： H04Q7/24
CPC分类号： H04L45/18 , H04L12/4641 , H04L45/04 , H04W40/00
摘要： Unified mobility switches often define a virtual LAN (VLAN), including a combination of mobility tunnels and access tunnels, via which packets are transported to a mobile device over a combination of physical connections and wireless links. A unified switch may have multiple ports available to route a packet to a particular destination, since the unified switches identify routing paths for both physical connections and VLANs. A particular unified switch may therefore have multiple routes to a common destination, which can lead to a routing loop across a network of switches supporting both physical and virtual connections. A unified mobility switch provides loop detection and prevention through a set of rules for qualifying connections as virtual tunnels or physical connections, and defining a single path where multiple potential paths exist.
摘要翻译：统一移动交换机通常定义虚拟LAN（VLAN），包括移动隧道和接入隧道的组合，通过物理连接和无线链路的组合，将数据包传输到移动设备。统一交换机可能有多个端口可用于将数据包路由到特定的目的地，因为统一交换机可以识别物理连接和VLAN两者的路由路径。因此，特定的统一交换机可以具有到公共目的地的多条路由，这可以导致跨越支持物理和虚拟连接的交换机的网络的路由环路。统一的移动交换机通过一组用于将连接限定为虚拟隧道或物理连接的规则，并且定义存在多个潜在路径的单个路径来提供循环检测和预防。

9. 发明申请

US20100293272A1 TOLERANT DEVICE LICENSING IN A DISTRIBUTED ENVIRONMENT 有权
标题翻译：分布式环境中的容忍设备许可
公开(公告)号：US20100293272A1
公开(公告)日：2010-11-18
申请号：US12775031
申请日：2010-05-06
申请人： Kumara Das Karunakaran , Vivek L. Atreya , Shashi H. Ankaiah , Seemant Choudhary
发明人： Kumara Das Karunakaran , Vivek L. Atreya , Shashi H. Ankaiah , Seemant Choudhary
IPC分类号： G06F15/173 , G06F11/00
CPC分类号： H04W24/04
摘要： Methods, apparatus and a computer program product provide for a Tolerant License Manager that defines a cluster of a plurality of network controllers, wherein each respective network controller contributes at least one license to a current total amount of licenses in a license pool. The Tolerant License Manager identifies at least one threatened access point upon detecting a first network controller has become unavailable. Each threatened access point comprises any access point connected to the first network controller when the first network controller becomes unavailable. The Tolerant License Manager establishes (and/or) approves a connection between a back-up controller and the threatened access point(s). While the first network controller is unavailable, the Tolerant License Manager allocates a license to each threatened access point via the back-up network controller.
摘要翻译：方法，装置和计算机程序产品为容许许可管理器提供了一个定义多个网络控制器的集群的容许许可证管理器，其中每个相应的网络控制器向许可证池中当前的总许可数量贡献至少一个许可证。检测到第一个网络控制器变得不可用时，容许许可证管理器会识别至少一个受威胁的接入点。每个受威胁的接入点包括当第一网络控制器变得不可用时连接到第一网络控制器的任何接入点。容许许可证管理器建立（和/或）批准备用控制器与受威胁的接入点之间的连接。当第一个网络控制器不可用时，容许许可证管理器通过备份网络控制器向每个受威胁的接入点分配许可证。

10. 发明申请

US20100290348A1 GENERATION AND USAGE OF MOBILITY VLAN ID VERSION VALUE 有权
标题翻译：生成和使用移动VLAN ID版本值
公开(公告)号：US20100290348A1
公开(公告)日：2010-11-18
申请号：US12777028
申请日：2010-05-10
申请人： William Stanislaus , Seemant Choudhary , Vivek L. Atreya , Shashi H. Ankaiah
发明人： William Stanislaus , Seemant Choudhary , Vivek L. Atreya , Shashi H. Ankaiah
IPC分类号： H04L12/26 , G06F11/20
CPC分类号： H04L41/082 , H04L12/4641
摘要： A mobility network architecture includes a control plane and data plane. The control plane supports notification of VLAN configurations. The data plane supports routing of data amongst VLANs. Each VLAN has an associated identifier value as well as a version number. The version number for a respective VLAN can be updated to a new value each time there is a change to the VLAN. Typically, a controller communicates over the control plane to notify each member switch when a version number has changed for a VLAN. If controller notification fails, a member switch can receive a notification from a neighboring switch that the version number for a VLAN has been modified. In response to detecting such a condition, the switch receiving the notification can prevent forwarding of data even though the switch does not receive notification from the controller that the version number for the VLAN has changed.
摘要翻译：移动网络架构包括控制平面和数据平面。控制面板支持VLAN配置通知。数据平面支持VLAN之间的数据路由。每个VLAN都有相关的标识符值以及版本号。每当VLAN更改时，相应VLAN的版本号可以更新为新值。通常，当VLAN的版本号更改时，控制器通过控制平面进行通信，以通知每个成员交换机。如果控制器通知失败，成员交换机可以从相邻的交换机接收到VLAN的版本号被修改的通知。响应于检测到这种情况，接收通知的交换机即使交换机没有从控制器接收到VLAN的版本号已经改变的通知，也可以防止数据的转发。

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