Invention Grant
US09397847B2 Managing router advertisement messages to support roaming of wireless mobile client devices 有权
管理路由器广告消息以支持无线移动客户端设备的漫游

Managing router advertisement messages to support roaming of wireless mobile client devices
Abstract:
Techniques are provided to manage how router advertisement messages are forwarded for ultimate wireless transmission in a wireless network. In one embodiment, a multicast router advertisement message intended for a virtual local area network is converted into individual unicast router advertisement messages directed to specific wireless mobile client devices that are part of that virtual local area network. In another embodiment, router advertisement messages are routed between controllers according to the current location of a wireless mobile client device. In still other embodiments, techniques are provided to minimize the volume of the router advertisement messages sent over a wireless network, and to proactively send a unicast router advertisement message to a mobile client device that has performed a handoff, without waiting for a router solicitation message.
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