8.1.4 IP input redundancy – alternative IP input configuration
Adding alternative IP inputs
To add alternative IP input configurations, click on the menu icon at the right of the menu line ALT. CONFIG. of
an IP input, and select “Add configuration”.
1. Select the Priority for the alternative input. If more than one alternative input is used, the alternative
inputs must have different priorities.
2. Enter the settings for the alternative IP input. Note that the bitrate mode is inherited by the alternative
configurations from the primary configuration.
3. If the alternative IP input has the same Multicast address, you can differentiate the inputs via the Source
address.
4. Click the “yellow tick” to save the settings.
Redundancy trigger and switch-over settings
The IP input redundancy is enabled under the settings for the primary IP input. To be able to enable redundancy,
you must first create alternative configuration(s).
1. Select Redundancy mode ON
2. Set the Linger time (in seconds)
3. Set the Latency time (in seconds)
4. Set the Bitrate threshold (in kbit/s)
5. Click the “yellow tick” to save the settings.
Additional information about triggering, Linger time and Latency
The trigger for changing to an alternative configuration is when the bit rate for the Active configuration is
below the Bitrate threshold
Linger time is the time an input remains at its current configuration before switching to an alternative
configuration, starting from the time the trigger is set, i.e. failure detection time is set by the Linger time.
Latency time is the time an alternative configuration is tried out for a bit rate. If there is no bit rate within
the latency time the next configuration is tried. This is used to allow switches time to get the IGMP
message from the Chameleon module and forward the stream.
There is no automatic fall-back, but if an alternative configuration fails, there will be a new search for available
configurations starting with the primary configuration.
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