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| Sun Ethernet Fabric Operating System ### PIM Administration Guide

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### Reducing Data Transmission Time Using the SPT

The SPT is used for the multicast transmission of packets with the shortest path from the sender to recipients. Directing data to the SPT reduces the amount of time it takes for the server to transmit data, however, it also requires more memory than configurations that do not transmit data through the SPT.

These sections provide examples to help you configure your server to transmit data through the SPT. Note that the example output shown is cumulative. The output reflects values for commands that have been defined during other tasks. Values displayed in bold reflect changes resulting from the task defined in a given section.

- Specify the PIM Threshold That Triggers SPT Switching

- Specify the PIM SPT Switch Period

- Specify the PIM RP Threshold That Triggers Source-Specific Switching

- Specify the PIM RP Switch Period

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