Transport Stream Redundancy (TSR) helps ensure an Output Transport Stream has a backup input in the event that its normal input becomes unhealthy. To differentiate between these input sources, the Input Stream Source at the time of creation of the Output Transport Stream is known as the Primary Input Source. The backup input source, if TSR is enabled for an Output Transport Stream, is known as the Secondary Input Source.
When enabled, packet analysis is performed to determine if the Primary Input Source is healthy. A parameter, called Input bit rate compare type, can be specified for the VUE handling the Transport Stream to determine when NULL packets are included in the analysis. When the analysis is determined to be "unhealthy", a fail over to the Secondary Input Source happens automatically without operator intervention.
When a Primary Input Source becomes healthy again, an operator can perform a fail back operation to switch the Transport Stream back to the Primary Input Source. Alternatively, a parameter, called TS Redundancy AutoFailback can be enabled on the VUE to have the Output Transport Stream perform this fail back without operator intervention once the Primary Input is determined to be healthy again.
Transport Stream definition in VTM
Each row on the Input Transport Stream Redundancy page represents a single Transport Stream and it's redundancy configurations. Each entries contain the following parameters:
- Enabled
- A check box which specifies whether redundancy is enabled for this Transport Stream. When enabled, Secondary Input fields must contain values.
- Server Name
- Specifies the VUE server associated with this Transport Stream.
- TSR Name
- An optional name assigned to the Transport Stream Redundancy which can be used for filtering or search. If a Name is assigned, it must be unique amongst all other assigned Names.
- Primary Input Stream details
- The following parameters define the Primary Input Stream:
- Primary Interface Port
- Primary interface IP address of the VUE server.
- Primary UDP Port
- Primary interface UDP port of the VUE server.
- Primary Multicast IP
- Primary Multicast IP address of the input source.
- Primary Source IP
- Primary Source IP address of the input source.
- Secondary Input Stream details
- The following parameters define the Secondary Input Stream:
- Secondary Interface Port
- Secondary interface IP address of the VUE server.
- Secondary UDP Port
- Secondary interface UDP port of the VUE server.
- Secondary Multicast IP
- Secondary Multicast IP address of the input source.
- Secondary Source IP
- Secondary Source IP address of the input source.
- In Use
- Specifies whether the
Secondary Input Stream is being used in the Transport Stream. Values are:
- Primary
- Primary Input Source is in use.
- Secondary
- Secondary Input Source is in use (i.e. a failover as occurred).
- Inactive
- TSR entry is Disabled. See Enabled above.
- Error
- An error condition within the VUE has occurred for the TSR entry. Consult Logs, verify TSR configuration, or call CommScope Support for assistance.
- Assigned Service Catalog Entries
- Specifies the number of Service Catalog Entries on the VTM being used by the Primary Input for Transport Stream. When greater than 0, this field is a link to a screen defining the used Service Catalog Entries.
- Suspended
- Specifies whether this Transport Stream Redundancy is suspended or not. A
suspended Transport Stream Redundancy will never perform an automatic fail
over to the Secondary Source.NOTE: It is necessary to suspend a Transport Stream Redundancy when making modifications to it.
Transport Stream Redundancy configurations in a VUE
- TS Redundancy AutoFailback
- Determines whether the Output Transport Stream reverts back to the original source automatically or not. When Enabled, the VUE to automatically revert back to the original Source for the Transport Stream when it is determined be healthy again. When Disabled, the VUE original Source will not be reverted to until the operator performs a manual Failback. The default value is Disabled.
- Input bit rate compare type
- Determines the packets used to determine whether an Input Source is unhealthy and failover to the secondary Source is necessary. When StreamRate is selected, NULL packets are included in the analysis. When DataRate us selected, NULL packets are not included in the analysis. The default is StreamRate.