Cisco Catalyst 4500 series Administration Manual page 903

Chapter 37 Configuring IP Multicast
Command or Action
Step 10
Switch(config)# ip pim send-rp-discovery
[interface-type interface-number] scope
ttl-value [interval seconds]
Step 11
Switch(config)# ip pim rp-announce-filter
rp-list access-list group-list access-list
Step 12
Switch(config)# interface type number
Step 13
Switch(config-if)# interface ethernet 1
ip multicast boundary access-list
[filter-autorp]
Step 14
Switch(config-if)# end
Step 15
Switch# show ip pim autorp
Step 16
Switch# show ip pim rp [mapping] [rp-address]
OL_28731-01
Purpose
Configures the router to be an RP mapping agent.
• Perform this step on the RP router only.
• 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
Note
messages 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
Requirementsgroup-to-RP mapping updates).
The example shows limiting the Auto-RP discovery
•
messages to 31 hops on loopback interface 1.
Filters incoming Auto-RP announcement messages coming
from the RP.
Perform this step on the RP router only.
•
Two example access lists that apply to this step could
•
be:
access-list 1 permit 10.0.0.1
access-list 1 permit 10.0.0.2
access-list 2 permit 224.0.0.0 15.255.255.255
Selects an interface that is connected to hosts on which PIM
can be enabled.
Configures an administratively scoped boundary.
Perform this step on the interfaces that are boundaries
•
to other routers.
The access list is not shown in this task.
•
An access list entry that uses the deny keyword creates
•
a multicast boundary for packets that match that entry.
Returns to EXEC mode.
(Optional) Displays the Auto-RP information.
(Optional) Displays RPs known in the network and shows
how the router learned about each RP.
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
Configuring IP Multicast Routing
37-19