3com 8807 참조 가이드
PIM Configuration Commands
631
Use the undo pim sm command to disable the PIM-SM protocol.
By default, PIM-SM is disabled.
Users need to configure the PIM-SM protocol on each interface. Generally, the
PIM-SM protocol needs to be enabled on each interface.
PIM-SM protocol needs to be enabled on each interface.
Related command: multicast routing-enable.
Example
# Enable PIM-SM on VLAN-interface10.
<SW8800> system-view
System View: return to User View with Ctrl+Z.
[SW8800]interface vlan-interface 10
[3Com-Vlan-interface10] pim sm
pim timer hello
Syntax
pim timer hello seconds
undo pim timer hello
View
Interface view
Parameter
seconds: Time interval for a port to send Hello packets, in the range of 1 to 18,000
(in seconds). By default, the time interval is 30 seconds.
(in seconds). By default, the time interval is 30 seconds.
Description
Use the pim timer hello command to configure the time interval for a port to
send Hello packets.
send Hello packets.
Use the undo pim timer hello command to restore the default time interval.
After the protocol independent multicast-sparse mode (PIM-SM) protocol is
enabled for a port, a switch sends Hello packets periodically to all network devices
supporting protocol independent multicast (PIM) to find its neighbors. If a port
receives the Hello packets, it indicates the port has a neighbor network device
supporting PIM, and the port adds the neighbor to its port neighbor list. If a port
does not receive the Hello packets from the existing neighbors in its neighbor list
in the specified time, the system assumes the neighbor has left the multicast
group.
enabled for a port, a switch sends Hello packets periodically to all network devices
supporting protocol independent multicast (PIM) to find its neighbors. If a port
receives the Hello packets, it indicates the port has a neighbor network device
supporting PIM, and the port adds the neighbor to its port neighbor list. If a port
does not receive the Hello packets from the existing neighbors in its neighbor list
in the specified time, the system assumes the neighbor has left the multicast
group.
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You must enable a PIM protocol (PIM-DM or PIM-SM) in interface view before
you can proceed with this configuration.
you can proceed with this configuration.
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When you configure the time interval for a port to send Hello packets, the PIM
neighbor hold-time value is automatically set to 3.5 times the Hello interval.
Therefore you need not configure the PIM neighbor hold-time separately.
neighbor hold-time value is automatically set to 3.5 times the Hello interval.
Therefore you need not configure the PIM neighbor hold-time separately.