D-Link DWC-1000 User Manual - Page 69

Wireless Controller User Manual RF S can Other Channels : The acces s point can perform RF s cans to collect in fo rmat io n ab o u t o t her wireles s d ev ices wit h in ran g e an d t h en rep o rt t h is in fo rmat io n t o t h e DW C-1000 wireles s co n t ro ller. If y o u s elect t h e Scan Ot h er Ch an n els o p t io n , t h e rad io p erio d ically mo v es away fro m t h e o p erat ion al ch ann el t o s can o t h er ch an n els . En ab lin g t h is mo d e cau s es t h e rad io t o in t erru p t u s er t raffic, wh ich may b e n o t iceab le w it h v o ice connections. W hen the Scan Other Channels option is cleared, the A P s cans only the operating channel. RF S can S entry: Select this option to allow the radio to operate in s entry mo d e. W h en t h e RF Scan Sen t ry o p t io n is s elect ed , t h e rad io p rimarily p erfo rms d ed icat ed RF s can nin g. Th e rad io p assiv ely lis t ens fo r b eacons and t raffic exch an g e b et ween clien t s and o t her access p oin ts b u t d o es n o t accep t co n n ect io n s fro m wireles s clien t s . In s en t ry mo d e, all VA Ps are d is ab led . Net wo rks t h at d eplo y s entry A Ps o r rad io s can d etect d ev ices o n t h e n etwork q u icker an d p erfo rm mo re t h ro u gh s ecurit y an alysis . In t h is mo d e, t h e rad io co n t ro llers fro m o n e ch an nel t o t h e n ext . Th e len g t h o f t ime s p en t o n each channel is controlled by the s can duration. The default s can duration is 10 millis eco n d s . Mode : Th e M o d e d efin es t h e Ph ysical Lay er (PHY) s t an dard t h e rad io u s es . Select o n e o f t h e fo llo win g mo d es fo r each rad io in t erface. Radi o 1 s upports : • IEEE 802.11a is a PHY s t an dard t h at s pecifies o peratin g in t h e 5 GHz U-NII b an d u s ing o rt hog onal freq u en cy d iv isio n mu lt ip lexin g (OFDM ). It s upports data rates ranging from 6 to 54 Mbps . • IEEE 802.11a/ n o p erat es in t h e 5 GHz ISM b an d an d in clu des su ppo rt fo r b o t h 802.11a an d 802.11n d ev ices . IEEE 802.11n is an ext en s io n o f t h e 802.11 s t an d ard t h at in clu d es mu lt ip le -in p u t mu lt ip le -o u t p u t (M IM O) t ech n o lo g y . IEEE 802.11n s u p p o rt s d at a ran g es o f u p t o 248 Mbps and nearly twice the indoor range of 802.11 b, 802.11g, and 802.11a. • 5 GHz IEEE 802.11n is t h e reco mmen d ed mo d e fo r n et wo rks wit h 802.11n d ev ices t hat o p erat e in t h e 5 GHz freq u en cy t h at d o n ot n eed to s u p p o rt 802.11a o r 802.11b / g d ev ices . IEEE 802.11n can ach iev e a 67