Cisco Catalyst 3850 series Configuration Manual page 189

Configuring PIM
Command or Action
Step 10
Repeat Steps 1 through 9 on all PIM interfaces.
Step 11
ip pim send-rp-announce {interface-type
interface-number | ip-address} scope ttl-value
[group-list access-list] [interval seconds]
[bidir]
Example:
Device(config)# ip pim send-rp-announce
loopback0 scope 31 group-list 5
Step 12 ip pim send-rp-discovery [interface-type
interface-number] scope ttl-value [interval
seconds]
Example:
Device(config)# ip pim
send-rp-discovery loopback 1 scope 31
OL-32598-01
Purpose
--
Sends RP announcements out all PIM-enabled interfaces.
• Perform this step on the RP device only.
• Use the interface-typeand interface-number arguments to define
which IP address is to be used as the RP address.
• Use the ip-address argument to specify a directly connected IP
address as the RP address.
Note If the ip-address argument is configured for this command, the
RP-announce message will be sourced by the interface to which
this IP address is connected (that is, the source address in the
IP header of the RP-announce message is the IP address of that
interface).
• This example shows that the interface is enabled with a maximum
of 31 hops. The IP address by which the device wants to be
identified as RP is the IP address associated with loopback interface
0. Access list 5 describes the groups for which this device serves
as RP.
Configures the device to be an RP mapping agent.
• Perform this step on RP mapping agent devices or on combined
RP/RP mapping agent devices.
Auto-RP allows the RP function to run separately on one device
Note
and the RP mapping agent to run on one or multiple devices. It
is possible to deploy the RP and the RP mapping agent on a
combined RP/RP mapping agent device.
• Use the optional interface-type and interface-number arguments
to define which IP address is to be used as the source address of
the RP mapping agent.
• Use the scope keyword and ttl-value argument to specify the
Time-to-Live (TTL) value in the IP header of Auto-RP discovery
messages.
• Use the optional interval keyword and seconds argument to specify
the interval at which Auto-RP discovery messages are sent.
Lowering the interval at which Auto-RP discovery messages
Note
are sent from the default value of 60 seconds results in more
frequent floodings of the group-to-RP mappings. In some
network environments, the disadvantages of lowering the
interval (more control packet overhead) may outweigh the
advantages (more frequent group-to-RP mapping updates).
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3.6E (Catalyst 3850 Switches)
Configuring Sparse Mode with Auto-RP(CLI)
165