How to Configure PIM Dense Mode State Refresh
Configuring PIM Dense Mode State Refresh
There are no configuration tasks for enabling the PIM Dense Mode State Refresh feature. By default, all PIM
routers that are running a Cisco IOS XE software release that supports the PIM Dense Mode State Refresh
feature automatically process and forward state refresh control messages.
To disable the processing and forwarding of state refresh control messages on a PIM router, use the ip pim
state-refresh disableglobal configuration command. To enable state refresh again if it has been disabled, use
the no ip pim state-refresh disableglobal configuration command.
The origination of state refresh control messages is disabled by default. To configure the origination of the
control messages on a PIM router, use the following commands beginning in global configuration mode:
PurposeCommand
Specifies an interface and places the router in interface
configuration mode.
Router(config)# interface type number
Configures the origination of the PIM Dense Mode
State Refresh control message. Optionally, you can
configure the number of seconds between control
messages by using the interval argument. The default
interval is 60 seconds. The interval range is 1 second
to 100 seconds.
Router(config-if)# ip pim state-refresh
origination-interval [interval]
Related Topics
PIM Dense Mode State Refresh Overview, on page 380
Originating Processing and Forwarding PIM Dense Mode State Refresh Control Messages Example, on
page 383
Processing and Forwarding PIM Dense Mode State Refresh Control Messages Example, on page 383
Verifying PIM Dense Mode State Refresh Configuration
Use the show ip pim interface [type number] detail and the show ip pim neighbor [interface] commands
to verify that the PIM Dense Mode State Refresh feature is configured correctly. The following output of the
show ip pim interface [type number] detail command indicates that processing, forwarding, and origination
of state refresh control messages is enabled.
Router# show ip pim interface fastethernet 0/1/0 detail
FastEthernet0/1/0 is up, line protocol is up
Internet address is 172.16.8.1/24
Multicast switching:process
Multicast packets in/out:0/0
Multicast boundary:not set
Multicast TTL threshold:0
PIM:enabled
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3.6E (Catalyst 3850 Switches)
OL-32598-01 381
IP Multicast Optimization: PIM Dense Mode State Refresh
How to Configure PIM Dense Mode State Refresh
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