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z If you have configured a basic ACL, the switch filters all the received multicast packets based on
the multicast source address, and discards packets that fail source address match.
z If you have configured an advanced ACL, the switch filters all the received multicast packets based
on the multicast source address and group address, and discards packets that fail source and
group address match.
Configuring the Hello Interval
In a PIM domain, a PIM router discovers PIM neighbors and maintains PIM neighboring relationships
with other routers by periodically sending hello messages.
Follow these steps to configure the Hello interval:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter interface view
interface interface-type
interface-number
—
Configure the Hello interval on
the interface
pim timer hello seconds
Required
The default Hello interval is 30
seconds.
Before configuring related PIM functions, you must enable PIM-DM or PIM-SM first.
Configuring PIM Neighbors
In order to prevent plenty of PIM neighbors from exhausting the memory of the router, which may result
in router failure, you can limit the number of PIM neighbors on the router interface. However, the total
number of PIM neighbors of a router is defined by the system, and you cannot modify it through
commands.
You can define what Layer 3 switches can become PIM neighbors of the current interface by configuring
a basic ACL.
Follow these steps to configure PIM neighbors:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter interface view
interface interface-type
interface-number
—
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