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1. 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。

2. 发明授权

US08942167B2 Methods, apparatus and computer readable medium for seamless internet protocol multicast connectivity in unified networks 有权
标题翻译：用于统一网络中无缝互联网协议组播连接的方法，装置和计算机可读介质
公开(公告)号：US08942167B2
公开(公告)日：2015-01-27
申请号：US12779156
申请日：2010-05-13
申请人： Shashi H. Ankaiah , Seemant Choudhary , Udaya Shankar N. , Balachander Rajakondala
发明人： Shashi H. Ankaiah , Seemant Choudhary , Udaya Shankar N. , Balachander Rajakondala
IPC分类号： H04W4/00 , H04L12/28 , H04L12/46 , H04L12/761
CPC分类号： H04L12/4633 , H04L12/4641 , H04L45/16
摘要： A method, apparatus and computer program product for providing seamless Internet Protocol multicast connectivity in unified networks is presented. The systems disclosed herein are able to transfer, from a designated (i.e., first) VLAN to a roaming (i.e., second) VLAN, a multicast stream from a multicast server in a mobility VLAN that is not available at the roaming VLAN. In operation, example embodiments of the present invention receive a report identifying a roaming mobile unit as a member of a first VLAN and forward the report to a first mobility switch in the first VLAN. The multicast stream is then received and forwarded toward the roaming mobile unit in the second VLAN so that transfer of the multicast stream from the first VLAN to the second VLAN is seamless.
摘要翻译：提出了一种在统一网络中提供无缝互联网协议组播连接的方法，装置和计算机程序产品。本文公开的系统能够从指定（即，第一）VLAN到漫游（即第二）VLAN，从在漫游VLAN处不可用的移动性VLAN中的多播服务器传输多播流。在操作中，本发明的示例性实施例接收标识漫游移动单元作为第一VLAN的成员的报告，并将报告转发到第一VLAN中的第一移动性交换机。然后，多播流被接收并转发到第二VLAN中的漫游移动单元，使得组播流从第一VLAN到第二VLAN的传输是无缝的。

3. 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。

4. 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.

5. 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.

6. 发明授权

US08477775B2 Unifying local and mobility network identifiers 有权
标题翻译：统一本地和移动网络标识符
公开(公告)号：US08477775B2
公开(公告)日：2013-07-02
申请号：US12776897
申请日：2010-05-10
申请人： Seemant Choudhary , Kumara Das Karunakaran , Shashi H. Ankaiah , Balachander Rajakondala
发明人： Seemant Choudhary , Kumara Das Karunakaran , Shashi H. Ankaiah , Balachander Rajakondala
IPC分类号： H04W40/00 , H04L12/56
CPC分类号： H04L12/465 , H04W8/26
摘要： In a mobility domain providing wired and wireless network transport to an enterprise or campus environment, a mobility switch maps a logical network identifier, such as a VLAN ID, to a “home” or wired network VLAN ID so that a mobile device is mapped to the wired VLAN for user identification, IP address consistency, and network policy enforcement. Propagation of the mapping to mobility switches ensures that a roaming user is mapped to the wired network VLAN from a remote L2 switch, and mobility tunnels across L3 boundaries allow roaming into a different broadcast domain or L3 switch connectivity in the mobility domain. Users are assigned to mobility VLAN(s) which are mapped to a VLAN in the wired domain at a mobility switch. The wireless users can roam within the wireless enterprise, or mobility domain, and the network maintains access to the user assigned mobility VLAN(s).
摘要翻译：在向企业或园区环境提供有线和无线网络传输的移动域中，移动交换机将诸如VLAN ID的逻辑网络标识符映射到“家庭”或有线网络VLAN ID，以便将移动设备映射到用于用户识别的有线VLAN，IP地址一致性和网络策略实施。映射到移动交换机的传播确保漫游用户从远程L2交换机映射到有线网络VLAN，跨越L3边界的移动性隧道允许漫游到移动性域中的不同广播域或L3交换机连接。用户被分配到在移动交换机上映射到有线域中的VLAN的移动VLAN。无线用户可以在无线企业或移动性域内漫游，并且网络维护对用户分配的移动性VLAN的访问。

7. 发明授权

US08379652B2 Methods, apparatus and computer readable medium for conveying virtual local area network (VLAN) policies from designated to roamed network 有权
标题翻译：用于将虚拟局域网（VLAN）策略从指定网络传输到漫游网络的方法，设备和计算机可读介质
公开(公告)号：US08379652B2
公开(公告)日：2013-02-19
申请号：US12772755
申请日：2010-05-03
申请人： Shashi H. Ankaiah , Vivek Lakshminarayana Atreya , Kumar Das Karunakaran , Udaya N. Shankar
发明人： Shashi H. Ankaiah , Vivek Lakshminarayana Atreya , Kumar Das Karunakaran , Udaya N. Shankar
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04W8/02 , H04L12/4633 , H04L12/4641 , H04W80/04 , H04W84/12
摘要： A method, apparatus and computer program product for providing policy inheritance between Virtual Local Area Networks (VLANs) is presented. The systems disclosed herein are able to convey, from a designated (i.e., first) VLAN to a roaming (i.e., second) VLAN, mobility VLAN policies enabled at the designated VLAN that are not provided at the roaming VLAN. In operation, example embodiments of the present invention detect a roaming mobile unit in the roaming VLAN. VLAN policies for the mobile unit are then requested from a VLAN server mobility switch in the designated VLAN. VLAN policies are then received and applied in the roaming VLAN.
摘要翻译：提出了一种用于在虚拟局域网（VLAN）之间提供策略继承的方法，装置和计算机程序产品。本文公开的系统能够从指定的（即，第一个）VLAN传送到漫游（即第二个）VLAN，在指定的VLAN处启用在移动VLAN处未提供的移动性VLAN策略。在操作中，本发明的示例实施例检测漫游VLAN中的漫游移动单元。然后从指定VLAN中的VLAN服务器移动交换机请求移动单元的VLAN策略。然后在漫游VLAN中接收并应用VLAN策略。

8. 发明申请

US20100290398A1 Unifying Local and Mobility Network Identifiers 有权
标题翻译：统一本地和移动网络标识符
公开(公告)号：US20100290398A1
公开(公告)日：2010-11-18
申请号：US12776897
申请日：2010-05-10
申请人： Seemant Choudhary , Kumara Das Karunakaran , Shashi H. Ankaiah , Balachander Rajakondala
发明人： Seemant Choudhary , Kumara Das Karunakaran , Shashi H. Ankaiah , Balachander Rajakondala
IPC分类号： H04W40/00
CPC分类号： H04L12/465 , H04W8/26
摘要： In a mobility domain providing wired and wireless network transport to an enterprise or campus environment, a mobility switch maps a logical network identifier, such as a VLAN ID, to a “home” or wired network VLAN ID so that a mobile device is mapped to the wired VLAN for user identification, IP address consistency, and network policy enforcement. Propagation of the mapping to mobility switches ensures that a roaming user is mapped to the wired network VLAN from a remote L2 switch, and mobility tunnels across L3 boundaries allow roaming into a different broadcast domain or L3 switch connectivity in the mobility domain. Users are assigned to mobility VLAN(s) which are mapped to a VLAN in the wired domain at a mobility switch. The wireless users can roam within the wireless enterprise, or mobility domain, and the network maintains access to the user assigned mobility VLAN(s).
摘要翻译：在向企业或园区环境提供有线和无线网络传输的移动域中，移动交换机将诸如VLAN ID的逻辑网络标识符映射到“家庭”或有线网络VLAN ID，以便将移动设备映射到用于用户识别的有线VLAN，IP地址一致性和网络策略实施。映射到移动交换机的传播确保漫游用户从远程L2交换机映射到有线网络VLAN，跨越L3边界的移动性隧道允许漫游到移动性域中的不同广播域或L3交换机连接。用户被分配到在移动交换机上映射到有线域中的VLAN的移动VLAN。无线用户可以在无线企业或移动性域内漫游，并且网络维护对用户分配的移动性VLAN的访问。

9. 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。

10. 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。

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