Dual PULL Transmission from Redundant Sources (Hot Redundancy)

Zixi can be deployed to pull parallel redundant sources to two targets. This topology includes two simultaneous streams pulled in parallel from two separate source nodes to a corresponding pair of redundant targets. The streams are pulled in parallel by the two redundant targets, creating two redundant paths to the destination. Two distinctly named inputs are created at the source Zixi Broadcasters. Each Zixi Receiver will be configured to Pull the stream from each of the Zixi Broadcasters. If the latency of the Inputs is identical, the streams will be frame synced providing they video is synced at the source.

Source Configuration

Configuring in advance the Pull output in the primary and secondary Broadcasters is not mandatory. 

Target Configuration

To configure the primary 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. Select the Pull option.
4. In the Host field, enter the name of the primary source host Zixi Broadcaster. 
5. In the Port field, enter the port number as configured in the primary Zixi Broadcaster. 
6. In the Stream field, enter the stream ID as configured in the primary Zixi Broadcaster.
7. Configure additional parameters as required. 
8. Click OK.

To configure the secondary 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. Select the Pull option.
4. In the Host field, enter the name of the secondary source host Zixi Broadcaster. 
5. In the Port field, enter the port number as configured in the secondary Zixi Broadcaster. 
6. In the Stream field, enter the stream ID as configured in the secondary Zixi Broadcaster.
7. Configure additional parameters as required. 
8. Click OK.

Cost Considerations

This topology duplicates the hardware and software components of both the source and the target. The configuration also requires using double the up-link bandwidth.  Allocation of twice the expected maximum bit-rate with head room is advised.

Latency Considerations

Primary Connection loss         = 

Retry cycle                              =

Connection to secondary        =

Total recovery Time                =