Cisco Systems 3560 사용자 설명서

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 GigabitEthernet3/0/25 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 GigabitEthernet3/0/20 v2/P 0 30 1 10.1.1.1

Use these privileged EXEC commands to display information about PIM stub configuration and status:

show ip pim interface displays the PIM stub that is enabled on each interface.

show ip igmp detail displays the interested clients that have joined the specific multicast source 
group.

show ip igmp mroute verifies that the multicast stream forwards from the source to the interested 
clients.

You must have an RP if the interface is in sparse-dense mode and if you want to treat the group as a 
sparse group. You can use several methods, as described in these sections:

 (a standalone, Cisco-proprietary protocol separate from PIMv1)

 (a standards track protocol in the Internet Engineering Task 

Force (IETF)

You can use auto-RP, BSR, or a combination of both, depending on the PIM version that you are running 
and the types of routers in your network. For more information, see the 

 and the 

This section explains how to manually configure an RP. If the RP for a group is learned through a 
dynamic mechanism (such as auto-RP or BSR), you need not perform this task for that RP.