Avaya Configuring IP Multicasting Services Manual de usuario Pagina 63

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Customizing DVMRP
117355-A Rev. A 4-11
Configuring Tree Pruning
If no members are detected on a branch of the shortest path tree for a given group,
DVMRP prunes the branch.
The following conditions cause DVMRP to prune the shortest-path tree for a
given group:
The router determines that the attached network on which the host is located
(or any other locally attached network) has no active member of the group.
The router determines that all neighbors on all attached networks other than
the next-hop network to the source have pruned off the source and group.
The router determines that it is not located on the shortest network path to any
remote network that includes a member of the group.
The router sends a DVMRP prune message to its DVMRP neighbor. The
neighbor removes the router from its forwarding table.
If the host later rejoins the group, the router sends the neighbor a DVMRP
graft message. The neighbor restores the router to its forwarding table.
Tree pruning is enabled on the router by default. You can use Site Manager to
disable and reenable tree pruning on the router.
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 Multicast. The Multicast menu opens.
4. Choose DVMRP. The DVMRP menu opens.
5. Choose Global. The DVMRP Global Configuration
window opens.
6. Set the Pruning Enable parameter. Click
on Help or see the parameter description
on page A-6.
7. Click on Save. You return to the Configuration Manager
window.
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