Overview
There is an IGMP (Internet Group Management Protocol) Test available on the ALIF1100, ALIF2100 and ALIF4000 product range to confirm whether IGMP has been configured on the network switch(s). This is to ensure that the network can handle multicast traffic, without which multicast can become broadcast traffic that can flood and overwhelm a network switch with data. This typically results in packet loss and therefore video and connection problems. See the IGMP Simplified page for more information.
Procedure
In order to run the IGMP Test, there are two options depending on the setup:
- For Receivers under AIM control, you will need to use its web interface.
- For those Receivers operating in Mini-Matrix mode without an AIM, you can use either the web interface or the OSD.
For simplicity, this example will be using the web interface, however, the OSD when used in Mini-Marix mode is the same. To access the web interface, the host computer that you are using must be on the same network as the Receiver.
- Open the web interface on a Receiver, e.g. https://<IP ADDRESS>. NOTE: You must use "HTTPS" and not "HTTP" when connecting to the web interface,
- Click on the Diagnostics page.
- Expand the Perform IGMP Test.
- A dropdown list will be revealed with a list of Transmitters on the network.
- Choose a Transmitter from the dropdown list.
- Press the Start button.
- After a few seconds, you will see the results of the test.
- In the example below, the Multicast Filtering and Fast Leave tests for both of the Receiver network interfaces have passed.
- If the Multicast Filtering Result says that it has failed would indicate that IGMP has not been configured or correctly.
- If the Filtering Result passes but the Fast Leave Result fails or is passed marginly, then this would indicate the IGMP Fast Leave has not been configured, or detected properly.
For installations that use multiple network switches, we recommend running the tests on different receivers and choosing transmitters that reside on other switches to ensure that the network is configured correctly for IGMP.
For more information about the network requirements for Infinty, please see our Successful Implmentation guide.