44-14
Cisco Catalyst Switch Module 3110 and 3012 for IBM BladeCenter Software Configuration Guide
OL-12189-01
Chapter 44 Configuring IP Multicast Routing
Configuring IP Multicast Routing
To disable multicasting, use the no ip multicast-routing distributed global configuration command. To
return to the default PIM version, use the no ip pim version interface configuration command. To
disable PIM on an interface, use the no ip pim interface configuration command.
Enabling PIM Stub Routing
Beginning in privileged EXEC mode, follow these steps to enable PIM stub routing on an interface. This
procedure is optional.
To disable PIM stub routing on an interface, use the no ip pim passive interface configuration command.
Step 5
ip pim {dense-mode | sparse-mode |
sparse-dense-mode}
Enable a PIM mode on the interface.
By default, no mode is configured.
The keywords have these meanings:
• dense-mode—Enables dense mode of operation.
• sparse-mode—Enables sparse mode of operation. If you configure
sparse mode, you must also configure an RP. For more information,
see the “Configuring a Rendezvous Point” section on page 44-15.
• sparse-dense-mode—Causes the interface to be treated in the mode
in which the group belongs. Sparse-dense mode is the recommended
setting.
Note After you enable a PIM mode on the interface, the ip
mroute-cache distributed interface configuration command is
automatically entered for the interface and appears in the running
configuration.
Step 6
end Return to privileged EXEC mode.
Step 7
show running-config Verify your entries.
Step 8
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Specify the interface on which you want to enable PIM stub routing, and
enter interface configuration mode.
For switches running the IP Base image, the specified interface must be
an SVI that is a VLAN interface created by using the interface vlan
vlan-id global configuration command. For all other software images, the
specified interface can be any routed interface.
Step 3
ip pim passive Configure the PIM stub feature on the interface.
Step 4
end Return to privileged EXEC mode.
Step 5
show running-config Verify your entries.
Step 6
copy running-config startup-config (Optional) Save your entries in the configuration file.
