Strange WiFi connectivity problem

[toffee_paul]

Hi,

 

We have an issue affecting our ability to use Chromecast and AirPlay and it's starting to really annoy me! We use Clevertouch screens which come with a built-in AirPlay app and we've renamed each Clevertouch device to reflect the name of the room e.g. Art, Science, etc.

 

The screens are on the guest wifi network and so are the iPads but when we try to stream the iPad using AirPlay to one of the screens we can't as it doesn't show up on iPad under the list of devices to connect to. Other Clevertouch screens, e.g. English, Maths etc appear on the list but not the one we need. Conversely, when I move away from the Clevertouch in Art and walk down the other end of the school, the Art room Clevertouch appears! This happens with the other screens too, if in English, iPad can't AirPlay to Clevertouch in English, likewise for Maths etc, etc.

 

Same is happening for the Chromecast. I managed to initially get it set up (using guest WiFi) but when I came to casting something from Chrome (from laptop that was also connected to the guest network), or even trying to check the device settings using Google Home app, it wouldn't connect, saying "can't find any devices". When I moved away from the screen/Chromecast it magically found the device again.

 

I thought at first it may be the strength of the WiFi signal but I'm getting full bars. We have 15 access points and WiFi speed around the school is generally excellent so not sure what's causing this.

 

Could it be something on the WAP controller (HP MSM 720) I need to enable/disable?

 

Any ideas?

[southhamster]

Could Bluetooth be doing something odd?

[jamesreedersmith]

Have you got client isolation on your guest network (stopping devices on the same AP seeing each other) but not stopping seeing between different APS?

[toffee_paul]

Have you got client isolation on your guest network (stopping devices on the same AP seeing each other) but not stopping seeing between different APS?

There is an option on the controller that says "Allow traffic between wireless clients" which is set to No. You think this could be it? I'll give it a go on Monday.

Edited November 25, 2017 by toffee_paul

[toffee_paul]

Setting "Allow traffic between wireless clients to "all" did the trick. The options were were "all", "802.1x", "IPv6" and "No". Tried "802.1x" and this didn't work, didn't bother with "IPv6".

So now this is enabled on the Guest WiFi, we can now cast to Chromecast and a colleagues VR headsets also now show up as connected and content is able to be pushed to these.

 

The iPads are the only remaining issue, they are connected to the curriculum network to allow for staff to AirPrint to our printers which are also on the curriculum network. If I put the iPads on the guest WiFI in order to use AirPlay, we lose the ability to AirPrint unless the WiFi is switched. Can see teachers moaning a lot about having to do this. I know I can disable wireless isolation for the curriculum network but would rather not obviously. Out of interest, who has disabled this in their place just to get AirPlay/Chromecast etc working?

 

 

Has anyone got any other recommendations?

Edited November 27, 2017 by toffee_paul

[mavhc]

Really you want a 3rd network, Devices, and some rules to allow multicast packets to move between the networks.

 

Why are they on a guest network in the first place?