Enabling Pim Stub Routing - Cisco Catalyst 3120 Software Manual

Chapter 44 Configuring IP Multicast Routing

Enabling PIM Stub Routing

Beginning in privileged EXEC mode, follow these steps to enable PIM stub routing on an interface. This
procedure is optional.
Command
Step 1
configure terminal
Step 2 interface interface-id
Step 3 ip pim passive
Step 4
end
Step 5
show ip pim interface
Step 6 show running-config
Step 7 copy running-config startup-config
To disable PIM stub routing on an interface, use the no ip pim passive interface configuration command.
In this example, IP multicast routing is enabled, Switch A PIM uplink port 25 is configured as a routed
uplink port with spare-dense-mode enabled. PIM stub routing is enabled on the VLAN 100 interfaces
and on Gigabit Ethernet port 20 in
Switch(config)# ip multicast-routing distributed
Switch(config)# interface GigabitEthernet0/25
Switch(config-if)# no switchport
Switch(config-if)# ip address 3.1.1.2 255.255.255.0
Switch(config-if)# ip pim sparse-dense-mode
Switch(config-if)# exit
Switch(config)# interface vlan100
Switch(config-if)# ip pim passive
Switch(config-if)# exit
Switch(config)# interface GigabitEthernet0/20
Switch(config-if)# ip pim passive
Switch(config-if)# exit
Switch(config)# interface vlan100
Switch(config-if)# ip address 100.1.1.1 255.255.255.0
Switch(config-if)# ip pim passive
Switch(config-if)# exit
Switch(config)# interface GigabitEthernet0/20
Switch(config-if)# no switchport
Switch(config-if)# ip address 10.1.1.1 255.255.255.0
Switch(config-if)# ip pim passive
Switch(config-if)# end
To verify that PIM stub is enabled for each interface, use the show ip pim interface privileged EXEC
command:
Switch# show ip pim interface
Address Interface Ver/ Nbr Query DR DR
Mode Count Intvl Prior
3.1.1.2 GigabitEthernet0/25 v2/SD 1 30 1 3.1.1.2
100.1.1.1 Vlan100 v2/P 0 30 1 100.1.1.1
10.1.1.1 GigabitEthernet0/20 v2/P 0 30 1 10.1.1.1
Use these privileged EXEC commands to display information about PIM stub configuration and status:
•
OL-12247-01
Purpose
Enter global configuration mode.
Specify the interface on which you want to enable PIM stub routing, and
enter interface configuration mode.
Configure the PIM stub feature on the interface.
Return to privileged EXEC mode.
Display the PIM stub that is enabled on each interface.
Verify your entries.
(Optional) Save your entries in the configuration file.
show ip pim interface displays the PIM stub that is enabled on each interface.
Figure 44-2:
Cisco Catalyst Blade Switch 3120 for HP Software Configuration Guide
Configuring IP Multicast Routing
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