a/b/g/n router definition of a/b/g/n router in the Free Online Encyclopedia.

dual-band router

A wireless router that supports both 2.4 and 5 GHz frequency bands of the 802.11 wireless standard. Prior to the 802.11n (11n) standard, dual-band routers handled 11a users in the 5 GHz band, while simultaneously supporting 11b and 11g users in the 2.4 GHz band.

Dual-Band N Routers
A dual-band N router supports both bands for 11n and all prior 802.11 standards (11a, 11b and 11g). Routers with simultaneous support provide load balancing; for example, data transfers could be configured to transmit on the 2.4 GHz band (SSID #1), while users who do video streaming could be configured on the 5 GHz band (SSID #2). See wireless router, 802.11n, 802.11 and SSID.

   802.11      Frequency
   Standard    Band

   11a         5 GHz

   11b         2.4 GHz
   11g         2.4 GHz

   11n         2.4 GHz and 5 GHz

Simultaneous Routing in Both Bands

Buffalo Technology's Nfinity Dual Band router simultaneously runs 11n and 11a at 5 GHz along with 11n and 11b/g at 2.4 GHz. To balance the network load, network administrators determine which band to dedicate to 11n users. (Image courtesy of Buffalo Technology Inc., www.buffalotech.com)

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dual-band router
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