Last time we covered how your network might be affect by interference even if it appears to be working well, and what can cause this interference – this time around we are starting to look at how you can assess your problem, and how to deal with it.
It is prudent to sweep your network for wi-fi interference, and one can be forgiven for thinking a walk around your business taking measurements of your network’s capacity would be sufficient. We would recommend a little more care is taken, and that an initial sweep should be carried out for an extended time, and repeated at different times of the day on different days. This is because the interference will be intermittent, due to the varying causes already discussed. Even periodic sweeping will not guarantee an interference free network (but should help you to assess how much of a problem you may have), so what else can be done?
Some newer to market switch-based WLAN infrastructure products have interference management technology that detects the presence of non-802.11 signals, and changes the channel of the access points in the area. This is helpful, but will not solve problems with broadband based devices such as cordless phones and Bluetooth devices. So the problem will still need addressing…
There is a school of thought that suggests if you stick an access point in each room of your network, you can overcome interference simply because the network is spread out. Sadly this is not the case, as the access points may begin to cause interference to each other… somewhat negating the point of having lots of them!
Next time we will look at how a wireless policy in your business might work, packet sniffers and other wi-fi interference geekery – don’t miss it. At some point we promise to tell you what will work to stop interference in your network!