实测后，没想到WDS是如此方便、简单、稳定。
WHR-G300N V2的价格现在是130元左右，如果办公环境，买几台做WDS也花不了几百元。其他可以刷DD-WRT的路由器也可以，我测试时使用的是WHR-G300N V2。用户数10人，加上手机等终端，终端数一共20左右。稳定性不错。安全性也不错，可以使用WPA2 Personal解密。
实测：
两台WHR-G300N V2（假设A为主，B为辅）都刷了 DD-WRT v24-sp2 (07/20/12) std - build 19519。
A的设置：
* WAN口连接ADSL猫
* Setup->Basic Setup->DHCP type：DHCP server
* 无线设置
B的设置：
* 禁用WAN口
* Setup->Basic Setup->DHCP type：DHCP forward
* 无线设置
B的无线设置和A完全相同，参见上面3张图片，唯一不同的是：WDS中的MAC地址要填A的地址。
如果是多台WDS，避免出现环路就OK了。
主要解决了不方便拉线、扩大无线覆盖面积等问题。
A wireless distribution system (WDS) is a system enabling the wireless interconnection of access points in an IEEE 802.11 network. It allows a wireless network to be expanded using multiple access points without the traditional requirement for a wired backbone to link them. The notable advantage of WDS over other solutions is it preserves the MAC addresses of client frames across links between access points.[1]
An access point can be either a main, relay, or remote base station.
- A main base station is typically connected to the (wired) Ethernet.
- A relay base station relays data between remote base stations, wireless clients, or other relay stations; to either a main, or another relay base station.
- A remote base station accepts connections from wireless clients and passes them on to relay stations or to main stations. Connections between "clients" are made using MAC addresses.
All base stations in a wireless distribution system must be configured to use the same radio channel, method of encryption (none, WEP, or WPA) and the same encryption keys. They may be configured to different service set identifiers. WDS also requires every base station to be configured to forward to others in the system.
WDS may also be considered a repeater mode because it appears to bridge and accept wireless clients at the same time (unlike traditional bridging). However, with this method, throughput is halved for all clients connected wirelessly.
