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This topology includes two simultaneous streams delivered in parallel from a single source using two NICs to a single target in a hot redundancy configuration. If the latency of the outputs is identical, the streams will be frame synced, provided that the video is synced on entry. 

Source Configuration

The following procedure describes how to configure a Zixi Feeder to push

the same stream

to a target

host in a

hot redundancy configuration. In order to configure a hot redundancy you will need to create two outputs in Zixi Feeder, each output will use a different NIC. Each NIC has a separate IP address. The procedure does not cover instructions on how to configure the Input into the Zixi Feeder.  

To configure the

first source node (e.g. Zixi Feeder):

1. On the Outputs page of Zixi Feeder, click the New Output button, located in the upper- right end corner of the screen.
2. In the Name field, type a new name for the output. 
3. In the Type field

1. select Push to Broadcaster.  
2. In

1. the Input Name field

1. select the relevant the input stream.
2. In

1. the Program

1.  field,

1. if you have created a filter for the stream, select the relevant program.
2. In

1. the Stream ID

1.  field, enter a stream ID (alphanumeric). The same Stream ID will be also configured in the target node (Push Input).
2. Optional - in

1. the Password

1.  field, specify a string to be

1. used at the destination to authenticate that the pushing Broadcaster is allowed to push this stream.

2. In

1. the Max Bitrate

1.  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.

2. In

1. the Max Latency

1.  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.

1. In the Host field, enter the host name or IP of the primary target.
2. In

1. the Port

1.  field,

1. specify the destination port to listen on for the Push stream (default: 2088).
2. In

1. the IP

1.  field, select from the drop-down menu,

1. the IP address of the

1. NIC (Network Interface Card) in the Source through which the stream will be pushed.

1. Click OK.
   The output is added to the Outputs list. 

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

• Repeat the steps above to configure the second source node, however in the Host field enter the host name or IP of the

• second target.

•  
• The stream in the second source can have the same Stream ID as the first source or a different Stream ID. 

Target Configuration

The following procedures describe how to configure the two target Zixi

Broadcasters in a

hot redundancy configuration. The

two targets can use the same

Stream IDs or use different Stream IDs, as configured in the first and second sources. 

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

1. Click the Inputs tab at the top of the

1. primary Zixi Broadcaster administrative screen
2. Click New Input on the upper right hand side of the screen.

Cost Considerations

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

A Zixi PULL input should be configured, which pulls the stream from a single source with two redundant NICs. In the event that the primary NIC becomes unavailable, the target node will automatically switch to the secondary NIC. The target node will attempt to pull from the primary NIC again only in the event that the secondary NIC becomes unavailable. 

The input in the source is configured as usual and can use any available connection types (Push, Pull, UDP, etc.). On the target Zixi Receiver you will configure one Pull input. This input is connected to the Broadcaster and includes an Alternative Host, which is the IP of the secondary NIC. In run-time, the Zixi Receiver will connect to the primary NIC in the 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 NIC  (which has been defined as the Alternative Host).

Source Configuration

Configure an input, as described below. Configuring in advance the Pull output in the Broadcaster is not mandatory.

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

1. On the Inputs page of the primary Zixi Broadcaster, click New Input on the upper-right corner of the screen.
2. In the Stream ID field, type a new name for the input stream. 
3. Select the a relevant connection type option.
4. Specify the stream parameters according to the relevant connection type selected. 
5. Click OK to create the primary input.

Target Configuration

1. Select the Push option.

1. Create an input at the primary target, ensuring the “Stream ID” matches that of the first source output.
2. Configure additional parameters as required. 
3. Click OK.

To configure the second target node (e.g. Zixi

Broadcaster): 

1. Click the Inputs tab at the top of the secondary Zixi

1. Broadcaster administrative screen
2. Click New Input on the upper right hand side of the screen.

1. Select the 

1. Push option.

1. Create an input at the secondary target, ensuring the “Stream ID” matches that of the second source output.
2. Configure additional parameters as required. 
3. 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                =