Windows 7的网络DHCP记忆功能

Win7之家（ www.win7china.com）：Windows 7的网络DHCP记忆功能

 据微软DHCP团队博客称，Windows 7和Windows Server 2008 R2中的DHCP将会包含一项名为DHCP Network Hint的新功能.

表明看来，Windows 7中默认状态下的DHCP将会显得更智能，尤其是用户当前使用的网络被Windows 7识别为系统曾经用过的时。

如果你使用的网线连接网络，你会看到如下提示：“我已经获取了地址租用权而且并未过期，因此我只想与服务器进行简短会话以续订该地址。”与重新进行一次完整会话相比，这样的过程显然更高效。当然，对于无线网络用户而言，还是得重新完整地来一次。?即使你已经获取了地址且未过期。

这对于经常在多个网络中切换的用户而言，无疑是个好消息，因为Windows 7可以帮助用户记住曾经使用过的网络。

附部分原文：

Apparently, and by default, DHCP in Windows 7 (and Server 2008 R2) will be more “opportunistic” when it recognizes an SSID for a network that it’s used before.

DHCP on wired stationary network connections has always done this thing where it says, “I already have an address lease, and it’s not expired, so I’m going to have a shorter conversation with the server to allow me to keep this address I already have".  That’s much more efficient than starting the whole request process over again.  Of course, for wireless connections, you always have to do the entire process; even if you’ve been on that network before and may have been able to lease an address that would not otherwise have expired.
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