WifiNigel

Sometimes you can walk on to a customer site and the customer may have iPad devices using the WiFi network. They may also have a range of different models, so that it is difficult to perhaps know the WiFi support capabilities available among their devices. In summary, to-date all iPads support 802.11 a/b/g and 802.11n on both the 2.4GHz and 5GHz bands. The 802.11n support is exclusively single stream, but the channel width that can be used has changed with recent models. Both the 4th Gen. iPad and iPad Mini support 40MHz channel widths on the 5GHz band. It is quite difficult to determine which version of iPad you have just by a cursory glance at the device. A very good way of determining the device type you are working with is to check the model number on the back of the iPad. It's a little tricky to read due to the small size of the etched-in font, but with a bit of a squint, you can just about see it. Here is a picture taken from the rear of my own iPad 2: By using t

" Cisco Unified Wireless Network Field Upgrade Software (FUS), Release 1.8.0.0, is a special AES package that performs various system-related component upgrades for Cisco Wireless LAN 2500 Series Controllers. If you are using a Cisco 2500 Series Controller and you upgrade to the 7.4.100.0 controller software release and intend to use the Application Visibility and Control (AVC) and NetFlow protocol features, you must install Cisco Unified Wireless Network Field Upgrade Software, Release 1.8.0.0. This release is not required if you are using other controller hardware models." http://www.cisco.com/en/US/docs/wireless/controller/release/notes/fus_1_8_0_0.html This definitely worth noting if you are upgrading to 7.4, as the new AVC features will not work without it. Also, it is well worth attaching a console cable whilst doing the upgrade as it takes a long time (around 30 minutes). Without the console, you'll be sitting there with your fingers crossed, breaking out

I've been taking a look at the Bonjour protocol in general recently due to some requirements I have been looking at for customers. The availability of Bonjour gateways from the likes of Cisco and Aerohive certainly make things a lot easier to provide access to Bonour services without having to jump through lots of multicast-over-wireless hoops. One area of particular focus has been Apple TV. It seems to be quite a popular device with execs who want to be able to mirror their iPad on to a meeting room projector. There are some great tools that allow you to browse the services that are available on a network. I have been using  Bonjour Browser for Windows , though other Mac equivalents are also available. When looking at the services available from an Apple TV, I see the following services advertised: _airplay._tcp. _raop._tcp. _sleep-proxy._udp. _touch-able._tcp. _appletv-v2._tcp I was interested to know what each of these services does. So, here it what I've be