Wireless Recommendation for 200,000 sq ft Warehouse

- 400' x 540' Warehouse with ~35' ceiling.
- Contents are not in yet and this must be installed prior to contents being delivered and setup. It will be in aisles in various directions and as yet not determined 100%.
- Wireless survey indicated that 12 APs required.

Vendor recommeneded:
12 x CISCO AIRONET 1242AG WIRELESS AP (AIR-AP1242AG-A-K9)
1 x CISCO CONSOLE CABLE (AIR-CONCAB1200=)
12 x CISCO AIRONET POWER INJECTOR (AIR-PWRINJ3=)
24 x CISCO AIRONET ANTENNA KIT (AIR-ANT2506)

Couple questions:
1. Does 12 APs seem like a lot for that size building?
2. Does the antenna recommended really fit that application? The range for that antenna indicates 0.21 to 3.3 miles. Am I missing something?

Any recommendations are welcome.

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r_i_xAsked:
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millsclCommented:
Keep in mind that distance is the MAXIMUM it will travel.  you won't necessarily have reasonable coverage over that distance.

I am willing to bet there is definitely fluff in there so the vendor can CYA but if you want reliable wireless coverage (i.e. staturation) to handle things like employees running around with handheld devices then this is probably about right.

12 AP's in 35,000 square feet is 1 AP for just under 3000 square feet.  Not too bad IMHO.
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millsclCommented:
Also keep in mind once the contents are in there such as high shelves, etc that will contribute to there being dead spots and such.  

Having total oversaturation like that will help alleviate that.  the cost of the AP's will seem like nothing compared to the monetary loss of having employees on the clock unable to do their job.
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MicahJPCommented:
I agree that sounds about right in order to over-saturate with the ABG APs you're getting, but why not deploy 802.11 N?? You'll get better coverage with fewer APs, and it's much faster. For a great N solution, check out Meru Networks....
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gmbaxterCommented:
I also agree that 802.11n capable APs should be deployed.

You may want to look at having a Cisco Wireless LAN controller to save individual configuration of the APs especially if you will have multiple WLANs.
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r_i_xAuthor Commented:
I'd like to go with the 802.11n but we have existing clients that are not capable of that. Symbol MC9090.
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MicahJPCommented:
N is backward compatible with b and g clients.
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r_i_xAuthor Commented:
"N is backward compatible with b and g clients."

Does that mean I would need to install as many 802.11n APs as I would have b or g APs? (hope that makes sense).

I.e., With the N allowing connections for the G clients, I would still need 12 APs correct?
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MicahJPCommented:
You shouldn't need 12 because N has a larger signal area than G, thusless APs. They're going to receive the stronger signal from the Naccess point at a greater distance than they would from a G ap. Whilean N access point might cost more, you're going to need less ofthem--and you're going to have much higher throughput for your Nclients.

Also worth noting--while N access points are capableof up to 300 Mbps, your G clients will still only be able to receive 54Mbps. And the G clients will degrade the potential bandwidth for any Nclients you have. i.e. - I have an AP that usually has two G clientsconnected to it @ 54 Mbps, and when I connect to it with my N capablelaptop--I usually get 130 Mbps rather than 300 (still better than atypical wired LAN).

Hope that helps.

p.s.- I know yousaid you have a vendor on it already, but I also mentioned MeruNetworks earlier. We went with their products about 6 months ago andhave been more than happy so far. They use what's called Virtual Celltechnology--all the APs are on one channel and your clients view thenetwork as one big AP. There are many benefits to this, but I'll letyou look into it if you're interested--probably depends on the kind ofrelationship you already have with your vendor. Here's Meru's pagetalking about Virtual Cell: http://www.merunetworks.com/technology/wlan/virtualcell.php
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r_i_xAuthor Commented:
We're going with the Cisco 1252GN. This will accomplish what we need immediately and prepare us appropriately for the future.

Thanks to all for advice.
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