1. tends to work the best
2. yes it will see the ssid on the 5g band even if it does not support N
3. You should be able to turn off A support in the router your different SSID plan should force the 2.4 anyway
4. It tend to always connect to the strongest, not sure there is a standard it seems to be very inconstant in real world
5. You have signal strength and signal quality..ie errors and interference. The quality is much more important than the strength, unfortunately some device do not show the bad packet rates. I have no knowledge of IPAD. This one is tricky even on a PC when you use 2 different SSID. You in effect define 2 networks and allow it to fail over. The trick it to get the first connection to be marked as a fail. You will drop all your session when this happens, your IP address will more than likely change which will drop all the nat mappings in the router. Most things will just reconnect after a glitch.
6. That is strange the router does not display. Some keys to look for is that you should be able to see which mac is \on which network. You can also see them in the ARP table on the router, I assume you use different IP pools per ssid
7. Mostly the friendly part but if your neighbors have a strong signal on the channel they can cause you so many errors you are better off not using both.
8. Spectrum analyzer will be the only way to find baby monitors,cameras etc etc that interfere. They make some very limited ones for about $200 which is much better than commercial ones costing many thousands. For home use it is much easier to just try the options. Some nic cards will show all the AP and all the channels and the signal strength. BUT they only see the AP announcements. You won't see 802.11 clients or any other junk that uses the radio band. Your best bet is to just keep a eye on your error counts. You can have excellent signal strength but have huge errors caused by say a cordless phone
I have a new 802.11n dual band router (Netgear WNDR4000) and clients with different wireless capabilities (wrt 802.11 specification):
- some clients support 'a/b/g'
- some clients support 'b/g'
- some clients support 'n' on 2.4 GHz (iPhones)
- some clients support 'n' on both 2.4 and 5 GHz (e.g. iPads)
I wonder how to configure the wireless router so that those clients that support 802.11n maximum speed don't get affected by the slower clients.
(For the iPhones I could live with lower speeds eventually, but not for those 'n'-devices that I use for media streaming e.g. iPads, TV, AppleTV, media server)
1) AFAIK the recommended setup for a dual band router is to define 2 separate SSIDs for the 2 frequency bands and let the faster 'n' clients use the 5 GHz band, while the slower (non-'n') clients share the 2.4 GHz band.
2) I noticed that some older computers with 802.11a/b/g adapters also detect the 5 GHz SSID. Initially I was surprised but I assume this is because 802.11a uses the 5 GHz band.
3) Is it possible to lock out 802.11a clients from the 5 GHz network?
(So that the 5 GHz band is available only for the 'n' clients and the 'a' clients don't even detect it/display its SSID)
4) Is it possible to ensure that 802.11n clients that support both 2.4 and 5 GHz connect to the 5 GHz band automatically when both bands are available?
(I've read somewhere that according to the 802.11n standard that's the default behavior of such clients. Is this true?)
5) Tests with my iPad confirmed that the 5 GHz network has less coverage than the 2.4 GHz network. At a certain distance from the router and behind 3-4 walls I couldn't access the internet anymore on the 5 GHz network. But apparently the iPad didn't loose the wireless connection entirely as the wireless symbol was still there but indicating minimal (zero?) signal strength. When I switched to the 2.4 GHz network I had good signal quality again and internet access worked, too.
Q: Is it possible to configure an iPad so that it switches to another wireless network (SSID) automatically when the signal strength gets too weak?
6) Is there a way to find out which clients are connected to which band/SSID?
(I thought that the router would show this under 'attached devices' but it doesn't unfortunately.)
7) The WNDR4000 router supports 3 different wireless modes for the 2.4 GHz network: 'up to 54/145/300 MBit/s'. The default setting is 'up to 145 MBit/s' (= so-called 'neighbor-friendly mode'). What's the advantage of this mode vs. 'up to 300 MBit/s'? (apart from being friendly to the neighbors...? )
What's the easiest way to find out which wireless settings (channels, modes, advanced settings) are the best for a given environment?
(Is there maybe a free software that can be used to analyze the wireless conditions?)