A wireless repeater (also called wireless range extender) takes an existing signal from a wireless router or wireless access point and rebroadcasts it to create a second network. When two or more hosts have to be connected with one another over the IEEE 802.11 protocol and the distance is too long for a direct connection to be established, a wireless repeater is used to bridge the gap.
Technical
WDS may provide two modes of access point-to-access point (AP-to-AP) connectivity:
●Wireless bridging, in which WDS APs (AP-to-AP on sitecom routers AP) communicate only with each other and don't allow wireless stations (STA) (also known as wireless clients) to access them
●Wireless repeating, in which APs (WDS on sitecom routers) communicate with each other and with wireless STAs
kis_987_654 wrote:
那可問下universal repeater模式
是否有跟Repeater一樣會速度砍半問題？
Drawbacks
Since only one wireless device can transmit at once, wireless transmissions are doubled (router to repeater and then repeater to client versus just router to client), and so:
●Wireless throughput is reduced by at least 50%.
●Wireless interference (e.g., with other networks on the same channel) is at least doubled.
●Potentially opens another security attack vector. Older devices don't always support WPA2-PSK so while the original network might be secure, the secondary one is potentially open.
