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[Description]
When dense-mode is specified, this enables PIM-DM; and when sparse-mode is specified, this enables PIM-SM for the
applicable interface.
If this command is executed with the "no" syntax, the function is disabled.
The same operation mode must be used on all VLAN interfaces.
When specifying a passive interface, multicast packets will be forwarded, but PIM messages will not be transmitted or received.
[Note]
When PIM-DM and PIM-SM are enabled, use the ip multicast-routing command to enable multicast routing. Also, using this
command will automatically enable IGMP, but we recommend explicitly enabling the IGMP and IGMP snooping functions.
[Example]
Enable PIM-DM on VLAN #2.
SWX3220(config)#interface vlan2
SWX3220(config-if)# ip pim dense-mode
SWX3220(config-if)# ip igmp
Enable PIM-SM on VLAN #2.
SWX3220(config)#interface vlan2
SWX3220(config-if)# ip pim sparse-mode
SWX3220(config-if)# ip igmp
8.4.2 Set Hello message interval
[Syntax]
ip pim hello-interval interval
no ip pim hello-interval
[Parameter]
interval : <1-18724>
PIM Hello message send interval (seconds)
[Initial value]
ip pim hello-interval 30
[Input mode]
interface mode
[Description]
Sets the Hello Period value (the Hello message transmission interval) for applicable interfaces on which PIM-SM and PIM-DM
are enabled.
If this command is executed with the "no" syntax, the setting returns to the default.
[Note]
If there are no Hello Holdtime settings for the Hello message time to live according to the ip pim hello-holdtime command,
Hello Holdtime is set to (Hello Period x 3.5) seconds.
If Hello Holdtime is less than Hello Period as a result of the Hello Period setting value being changed with this command, Hello
Holdtime will be updated to (Hello Period x 3.5) seconds.
[Example]
This sets the Hello message transmission interval to 20 seconds.
SWX3220(config)#interface vlan2
SWX3220(config-if)#ip pim hello-interval 20
8.4.3 Set Hello message timeout
[Syntax]
ip pim hello-holdtime time
no ip pim hello-holdtime
Command Reference | IP multicast control | 365