
Configuring IP Multicasting and Multimedia Services
6-20
117355-D Rev 00
Disabling and Reenabling PIM Globally
To disable and reenable PIM globally on the router, complete the following tasks:
Modifying the Last-Hop Threshold
By default, a last-hop router switches from the shared tree to a shortest-path tree
when the source sends data packets at a rate that exceeds 2048 bytes per second.
You can modify the last-hop threshold as follows:
• Change the data threshold rate (bytes per second).
• Specify a value from 0 through 64 for the last-hop data threshold to force the
last-hop router to immediately switch from the shared tree to the SPT upon
receiving the first packet from the source.
• Disable the last-hop threshold to ensure that PIM routers continue to receive
multicast traffic over the shared tree.
For more information about switching from the shared tree to the SPT, see “How
the Last-Hop Router Switches to the Shortest-Path Tree” on page 6-17.
Site Manager Procedure
You do this System responds
1. In the Configuration Manager window,
choose
Protocols
.
The Protocols menu opens.
2. Choose
IP
. The IP menu opens.
3. Choose
PIM
. The PIM menu opens.
4. Choose
Global
. The PIM Global Configuration window
opens.
5. Set the
Enable
parameter. Click on Help
or see the parameter description on A-37.
6. Click on
OK
. You return to the Configuration Manager
window.
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