Edge-Core ECS4660-28F Management Manual page 1932

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| Multicast Routing Commands

PIM Multicast Routing

lan-prune-delay

Interface Configuration (VLAN)

The multicast interface that first receives a multicast stream from a

particular source forwards this traffic to all other PIM interfaces on the

router. If there are no requesting groups on that interface, the leaf node

sends a prune message upstream and enters a prune state for this

multicast stream. The prune state is maintained until the join-prune-

holdtime timer expires or a graft message is received for the forwarding

Console(config-if)#ip pim join-prune-holdtime 60

Console(config-if)#

This command causes this device to inform downstream routers of how

long it will wait before pruning a flow after receiving a prune request. Use

the no form to disable this feature.

[no] ip pim lan-prune-delay

Interface Configuration (VLAN)

When other downstream routers on the same VLAN are notified that

this upstream router has received a prune request, they must send a

Join to override the prune before the prune delay expires if they want

to continue receiving the flow. The message generated by this

command effectively prompts any downstream neighbors with hosts

receiving the flow to reply with a Join message. If no join messages are

received after the prune delay expires, this router will prune the flow.

Prune delay is the sum of the effective propagation-delay and effective

override-interval, where effective propagation-delay is the largest

propagation-delay from those advertised by each neighbor (including

this switch), and effective override-interval is the largest override-

interval from those advertised by each neighbor (including this switch).

Console(config-if)#ip pim lan-prune-delay

Console(config-if)#

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