How does an app on android smartphone helps chromecast dongle to connect to WLAN?

Aruba Employee
Aruba Employee

Environment : This article applies to environments where users use iOS or android devices to enjoy online video from the web on to TV connected with Chromecast dongle.


Chromecast is the easiest way to enjoy online video and anything from the web on to the TV. Plug it into any HDTV and control it with your existing smartphone, tablet, or laptop. No remotes required. Cast your favorites from Google Play, YouTube, Netflix, and Chrome to your TV with the press of a button.

For Chromecast to work, the dongle and the controlling device needs to be able to talk directly (peer-to-peer) on the WLAN (no client isolation). Here is how the provision works:


  • Android devices connects to Chromecast dongle using Ad-Hoc wireless (it disconnects from the usual WLAN and talks direct to the dongle).
  • It provides the desired WLAN config details to the dongle
  • The dongle tries to connect to the normal WLAN (you should see it associate, and it will be pingable)
  • The controlling Android devices goes back to the normal WLAN
  • The Android device will try and talk peer-to-peer to the dongle across the normal WLAN



With client isolation enabled  ("Deny inter user traffic" in SSID Profile), the dongle keeps saying on the screen that it is trying to connect to an WLAN SSID.  Unless the controlling Android device can talk to the dongle it never goes past that screen.


As a troubleshooting step:


Use the applicable ping App on iOS or Android to ping the Chromecast dongle. Doing so, would help us understand their is peer-to-peer connection between them.


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Last update:
‎06-26-2014 04:58 PM
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