A Zixi PUSH output can be configured with multiple, ordered, fail-over targets. The topology includes a source node (in this case a Zixi Feeder) pushing a stream to a primary target (in this example the Primary Broadcaster). In the event that the primary target is not available, due to connection loss or hardware/software failure, the source node automatically switches to the secondary target. Additional targets can be configured with the same fail-over mechanism. The source node will attempt to connect to the primary again only in the event that the secondary connection is lost.

Source Configuration

The following procedure describes how to configure the Zixi Feeder to push a single stream to a primary host and an option to push the same stream to alternative hosts in the event that the primary host is unavailable. The procedure does not cover instructions on how to configure the Input into the Zixi Feeder.

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

On the Outputs page of Zixi Feeder, click the New Output button, located in the upper- right end corner of the screen.
In the Name field, type a new name for the output.
In the Type field, select Push to Broadcaster.
In the Input Name field, select the relevant input stream.
In the Program field, if you have created a filter for the stream, select the relevant program.
In the Stream ID field, enter a stream ID (alphanumeric) . The same Stream ID will be also configured in the target nodes (Push Inputs).
Optional - in the Password field, specify a string to be used at the destination to authenticate that the pushing Broadcaster is allowed to push this stream.
In the Max Bitrate field, specify the maximum bitrate of the stream. Default: 8000. This is used for internal memory allocation and will not affect the transmitted bitrate. Recommended: double the bitrate of the stream.
In the Max Latency field, specify the buffer size that Zixi Broadcaster will keep for error correction. For example, 6000 milliseconds would ensure that the stream is protected for six seconds of errors in the network. Default: 6000.
In the Host field, enter the host name or IP of the primary target.
In the Port field, specify the destination port to listen on for the Push stream (default: 2088).
In the IP field, select from the drop-down menu, the IP address of the NIC (Network Interface Card) in the Source through which the stream will be pushed.
Click the "+" button to add another (secondary) target.
Another line is added with the properties of the secondary destination.
Fill out the secondary destination parameters.
To add additional destination(s), click the "+" and fill out the destination parameters.
Click OK.

Target Configuration

The following procedures describe how to configure the two or more target Zixi Broadcasters in a warm redundancy configuration. These targets must use the same Stream ID that was used to configure the Source in the Zixi Feeder.

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

Click the Inputs tab at the top of the primary Zixi Broadcaster administrative screen
Click New Input on the upper right hand side of the screen.
In the Stream ID field, enter the same “Stream ID” as the source output.
Select the Push option.
In the Password field, if you have configured a password in the source (Feeder output), enter the same password.
Configure additional parameters as required.
Click OK.

To configure the secondary target node(s) (e.g. Zixi Broadcaster):

Click the Inputs tab at the top of the secondary Zixi Broadcaster administrative screen
Click New Input on the upper right hand side of the screen.
In the Stream ID field, enter the same “Stream ID” as the source output. This is the same Stream ID that was also entered in the primary target.
Select the Push option.
Configure additional parameters as required.
Click OK.
Repeat the steps above to configure additional target nodes as necessary. Each target node needs to be configures in the Zixi Feeder (source) output.

Cost Considerations

This topology duplicates the target side Zixi node software and hardware components. However, it does not require doubling the up-link bandwidth, as the backup connection stream will be only active in the event that the primary stream fails.

Latency Considerations

For detailed recovery time details, please contact your Zixi representative.

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