The SSID of the Netgear 5 GHz Wireless-N HD AP/Bridge WNHDE111 won’t show up on your Windows “View Wireless Networks”


The new Netgear 5 GHz Wireless-N HD Access Point/Bridge WNHDE111 is a hybrid Access Point and Bridge (see details below)

There is a huge problem with the use of this device on your network today (as of January 2010):

The problem number here is 5, as in 5 Ghz.  The Five ghz band ship used by this device DOES NOT WORK with older wireless cards used in laptops which only support up to 2.4ghz band.

The problem is that your Windows XP computers (and probably some of your Windows Vista and Windows7 computers as well) using the older wireless cards won’t see the SSID of your Netgear WNHDE111 AP/Bridge. You have two options. Upgrade your laptop wireless cards, or get another AP model that works at 2.4 Ghz band

If you decide to upgrade your wireless cards on your laptops here are some considerations about the web configuration of your WNHDE111AP/Bridge:


 The IP address of the unit operating in AP mode will default to 192.168.0.240 and when the unit is in bridge mode it will default to 192.168.0.241. Although price, performance and reliability have limited the proliferation of wireless LANs, a new way of thinking about wireless-system silicon implementation has removed those obstacles.

the default username is admin and default password is password

To configure network settings, from the main menu of the browser interface, under Advanced, click Network Settings, then pick Static IP from the drop-down list.Enter a static ip that matches the subnet of your internal network (The first three numbers must be the same as the gateway ex. if the gateway is10.10.1.1. your AP ip must be 10.10.1.x (where x is a number between 2 and 254). Make sure you pick a number that does not conflict with other IPs on your network (the easiest way to find out is trying to ping a number that is high enought ex 10.10.1.150 ((click on Start- Run – type “cmd” and at the DOS prompt type: ping 10.10.1.150; if you get a timeout message four times, most likely you don’t have another device on your network with that number, so it is safe to use it. Make sure all devices (computers, printers, game consoles, routers, etc) are turned on, so the test will be more accurate)

The Netgear has three mode switching settings:

Auto. Auto is the factory default setting. In Auto mode, if it senses it is connected to a router or gateway, it automatically sets itself to run as an AP. Otherwise, if connected to any other wired device, it automatically sets itself to run in Bridge mode.

AP. When switched to AP (access point) mode, it acts as an access point. In this mode, connect it to a router. The free Ethernet port can be used to connect other equipment to your network via an Ethernet cable.

Bridge. In Bridge mode, connect devices to it via Ethernet cables and they will connect to your wireless network. Typically, when a unit is set to bridge mode, it will be paired with a WNHDE111 working in AP mode.

 

Some technical information on 2.4 vs 5.4 ghz:

 

“…

The challenge of making an order-of-magnitude improvement in the price/performance of wireless LANs (WLAN) requires more than an incremental component redesign. Atheros decided to rethink-and redesign-the entire concept at the system level to make the radio fast, simple and dependable. Driving down cost required developing both the physical layer and media-access control (MAC) in highly integrated, mainstream process technology. The result is the first two-chip, all-CMOS, end-to-end solution, with a complete 5-GHz radio-on-a-chip including an integrated power amplifier, for next-generation IEEE 802.11a standard-compliant WLANs. That standard specifies optional modes up to 54 Mbits/second, but at the high-rate end Atheros chose to implement a proprietary 72-Mbits/s mode that offers better range and speed.

The idea for WLANs is not new and implementations in the 2.4-GHz band have been gaining in popularity. However, the unlicensed 2.4-GHz band has become a maelstrom of competing applications and protocols. What at the time appeared to be an ample swath of spectrum is becoming a contentious area with microwave ovens, cordless telephones, wireless security cameras, wireless local loop systems, Bluetooth personal area networks and WLANs all vying for the same airwaves and interfering with one another in the process.

To their credit, North American and European regulators are in tune with contemporary and future wireless technologies. That’s evident in the way regulators have handled regulations at 5 GHz compared with those at 2.4 GHz. At 5 GHz, the spectrum allocation and power rules, along with the absence of microwave ovens and Bluetooth devices, promise a much cleaner environment for WLANs. Further, the industry standard data rate is 11 Mbits/s for 2.4-GHz WLANs under IEEE 802.11b, and 6 to 54 Mbits/s for those using the IEEE 802.11a specification in the 5-GHz band. An all-CMOS, highly integrated chip set can deliver these 5-GHz advantages while driving the wireless price-performance ratio down to levels that will make WLANs ubiquitous in businesses and homes.

Both the U.S. and European regulatory agencies have allocated a 200-MHz portion of the 5-GHz band, from 5.15 to 5.35 GHz, for these types of in-building applications. And both the IEEE 802.11a and European Telecommunications Standards Institute Hiperlan2 standards use the same orthogonal frequency division multiplexing (OFDM) physical layer. Thus, at a radio level both standards are very much alike.

Where they differ, though, is at the MAC level. The IEEE standard uses an Ethernet-like listen-before-transmitting mode of media access; Hiperlan2 specifies the use of ATM-like time slots. Therefore, the MAC implementations for each standard will be quite different.

However, the MAC implementation is essentially a digital one and although it involves complex algorithmic coding, neither the MAC for IEEE 802.11a nor the one for Hiperlan2 is dependent upon a technology breakthrough. But the radio implementation for both clearly required significant innovation.

Extrapolating from the technologies developed to support 2.4-GHz wireless applications, it looked like the cost and power consumption would be too high to support 5-GHz ones. In fact, conventional wisdom suggested it would take three to five years for 5-GHz to become practical because it was too expensive, too energy draining, too limited in range and would not fit on a printed-circuit card. The nature of wireless development has been to treat things discretely-the SAW filter, power amplifier and other RF components are developed independently and without concern for the digital components. As a result, the level of integration has been limited while parts counts, as well as costs, have been relatively high. A major cost driver has been the esoteric technologies, such as gallium arsenide (GaAs) and silicon germanium (SiGe), used to provide the necessary performance.

Without the economies of mainstream semiconductor process technology-that is, standard digital-process CMOS-it looked as if the component costs and therefore the system costs would hinder widespread acceptance of WLANs. Further, it appeared that a CMOS solution would never be achieved because standard-process CMOS has been geared to digital circuits, and 5-GHz RF circuits are analog, requiring large dynamic range and susceptible to noise.

But, in fact, a CMOS solution is possible: not a proprietary CMOS imbued with mixed-signal and analog features, but the mainstream CMOS familiar to manufacturers of 95 percent of the world’s digital ICs. What’s more, the conventional wisdom turned out to be very wrong. Compared with today’s 2.4-GHz solutions, what Atheros developed costs less, consumes one-sixth as much energy, operates at twice the speed over the same range and can be implemented on a single-sided PCMCIA/PC Card. Further, the Atheros radio-on-a-chip is built in 0.25-micron CMOS because our architecture did not require going to 0.18 micron, which is less mature and therefore more costly …”

source: http://www.planetanalog.com/story/OEG20001002S0053

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