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Redundant streams

A Zixi PULL input can be

configured with multiple, ordered, failover sources. The topology includes a target node pulling from a primary source. In the event that the primary source becomes unavailable, the target node will automatically switch to the secondary source. The target node will attempt to pull the primary sources again only in the event that the secondary source becomes unavailable. 

The configuration is performed on the target Zixi Receiver. There you will configure a Pull input from the primary Broadcaster, which includes an backup host (secondary broadcaster). The stream has to be defined in the primary and secondary Broadcasters as inputs with the same stream ID. In runtime, the Zixi Receiver will connect to the primary Zixi Broadcaster and the output will be created automatically "on the fly". If the primary source becomes unavailable the target will attempt to pull the same stream with the same stream ID from the secondary source (which has been defined as the Backup host).

Source Configuration

Configuring in advance the Pull output in the Broadcaster is not mandatory.  

Target Configuration

To configure the target node (e.g. Zixi Receiver):

1. Click the Inputs tab at the top of the Zixi Receiver administrative screen
2. Click New Input on the upper right hand side of the screen.
3. In the Input Name field, type a new name for the input. 
4. Select the Pull option.
5. In the Host field, enter the host name or IP of the primary source. 
6. Click the "+" button to add an Alternative Host. 
7. In the Alt. Host field enter the host name or IP of the Secondary Source Broadcaster. 
8. In the Port field, enter the connection port of the host (Zixi Receiver). Default: 2077. 
9. In the Stream field, enter the stream ID used in the primary and secondary source inputs. The same stream ID should be used in the Inputs configured on the Primary and Secondary sources (Zixi Broadcasters). The output is created "on the fly" on the Zixi Broadcaster, so there is no need to configure it.   
10. Configure additional parameters as required. 
11. Click OK.

Source Configuration

To configure the primary source node (e.g. Zixi Receiver):

1. On the Inputs page of the primary Zixi Receiver, click    on the upper- right end corner of the screen.
2. In the Output Name field, type a new name for the output. 
3. In the Input Stream field, select the relevant input stream.
4. Select the Push option.
5. In the Output Parameters section, under Links, enter the details of the target, including:
   The target Host - Specify the destination Broadcaster name or IP address to which you are pushing the stream.
   The Port number - Specify the ports to listen on for Push streams. Default - 2088
   Target IP -  
6. Set the desired Max Latency in milliseconds.
7. Click OK to create the primary output,

To configure the secondary source node (e.g. Zixi Feeder):

1. On the Outputs page of secondary Zixi Feeder, click    on the upper- right end corner of the screen.. 
2. In the Output Name field, type the same name used for the primary output.
3. In the Output Parameters section, under Links, enter the same details of the primary target, including:
   The target Host - Specify the destination Broadcaster name or IP address to which you are pushing the stream (secondary target).
   The Port number - Specify the ports to listen on for Push streams. Default - 2088
   Target IP -  
4. Set the desired Max Latency in milliseconds

5. Click OK.

Target Configuration

To configure the target node (e.g. Zixi Broadcaster/Receiver):

1. Click the Inputs tab at the top of the Zixi Broadcaster administrative screen
2. Click New Input on the upper right hand side of the screen.
3. Select the Push option.
4. Create an input at the primary target, ensuring the “Stream ID” matches that of the primary and secondary sources output.
5. Configure additional parameters as required. 
6. Click OK.

Cost Considerations

This topology duplicates the network link. Allocation of the expected maximum bitrate with head room is advised on each network path.

Latency Considerations

Primary Connection loss         = 

Retry cycle                              =

Connection to secondary        =

Total recovery Time                =