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    • 1. 发明授权
    • Enhanced high availability for group VPN in broadcast environment
    • 在广播环境中增强组VPN的高可用性
    • US08442230B1
    • 2013-05-14
    • US12952623
    • 2010-11-23
    • Anthony NgChih-Wei ChaoNagavenkata Suresh MelamNilesh Kumar Maheshwari
    • Anthony NgChih-Wei ChaoNagavenkata Suresh MelamNilesh Kumar Maheshwari
    • H04L9/00
    • H04L43/10H04L9/0822H04L63/0272H04L63/065H04L63/164
    • A light-weight resilient mechanism is used to synchronize server secure keying data with member devices in a highly-scalable distributed group virtual private network (VPN). A server device generates an initial secure keying data set, for the VPN, that includes a first version identifier, and sends, to member devices and via point-to-point messages, the secure keying data set. The server device sends, to the member devices, heartbeat push messages including the first version identifier. The server device generates an updated secure keying data set with a second version identifier and sends, to the member devices, a key push message that includes the updated data set. The server device sends, to the member devices, heartbeat push messages including the second version identifier. Member devices may use the first and second version identifiers to confirm that secure keying data sets are current and quickly identify if updates are missed.
    • 轻量级的弹性机制用于将服务器安全密钥数据与高度可扩展的分布式组虚拟专用网(VPN)中的成员设备同步。 服务器设备为VPN生成包括第一版本标识符的初始安全密钥数据集,并向成员设备发送安全密钥数据集,并通过点对点消息发送安全密钥数据集。 服务器设备向成员设备发送包括第一版本标识符的心跳推送消息。 服务器设备生成具有第二版本标识符的更新的安全密钥数据集,并向成员设备发送包括更新的数据集的密钥推送消息。 服务器设备向成员设备发送包括第二版本标识符的心跳推送消息。 成员设备可以使用第一和第二版本标识符来确认安全密钥数据集是当前的,并且快速识别是否错过更新。
    • 5. 发明授权
    • Cooperative MAC learning/aging in highly distributed forwarding system
    • 高度分布式转发系统中的MAC学习/老化
    • US08155150B1
    • 2012-04-10
    • US12401911
    • 2009-03-11
    • Sammy ChungDongyi JiangTsai-Zong LinJin ShangAnthony Ng
    • Sammy ChungDongyi JiangTsai-Zong LinJin ShangAnthony Ng
    • H04J3/24
    • H04L12/433H04L12/462
    • A method may be performed by a device in a network, the device including multiple security process units (SPUs). The method includes receiving a packet over the network, the packet including a media access control (MAC) address, and assigning one SPU as the MAC address owner. The method also includes sending information about the MAC address to other SPUs within the device, storing the MAC address in a MAC table within each SPU, and initiating a MAC age query to confirm the MAC address has timed out among all SPUs. The MAC age query is passed via a logical ring of the SPUs beginning with the MAC address owner. If the MAC address is aged out at each SPU, the MAC address is deleted from each MAC table. If the MAC entry is still active, a different SPU is assigned as the MAC address owner.
    • 一种方法可以由网络中的设备执行,该设备包括多个安全处理单元(SPU)。 该方法包括通过网络接收分组,所述分组包括媒体访问控制(MAC)地址,并且分配一个SPU作为MAC地址所有者。 该方法还包括向设备内的其他SPU发送关于MAC地址的信息,将MAC地址存储在每个SPU内的MAC表中,以及启动MAC时间查询,以确认所有SPU中的MAC地址已经超时。 通过从MAC地址所有者开始的SPU的逻辑环来传递MAC时长查询。 如果MAC地址在每个SPU老化,则MAC地址从每个MAC表中删除。 如果MAC表项仍然处于活动状态,则会分配不同的SPU作为MAC地址所有者。