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Configuring IP Multicast Routing
Command
Step 5
ip pim version [1 | 2]
Step 6
ip pim {dense-mode | sparse-mode |
sparse-dense-mode}
Step 7
end
Step 8
show running-config
Step 9
copy running-config startup-config
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.
Configuring a Rendezvous Point
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:
•
•
•
You can use Auto-RP, BSR, or a combination of both, depending on the PIM version you are running
and the types of routers in your network. For more information, see the
Interoperability" section on page 34-8
page
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
34-10
Purpose
Configure the PIM version on the interface.
By default, Version 2 is enabled and is the recommended setting.
An interface in PIMv2 mode automatically downgrades to PIMv1 mode
if that interface has a PIMv1 neighbor. The interface returns to Version 2
mode after all Version 1 neighbors are shut down or upgraded.
For more information, see the
section on page
Enable a PIM mode on the interface.
By default, no mode is configured.
The keywords have these meanings:
Note
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Manually Assigning an RP to Multicast Groups, page 34-11
Configuring Auto-RP, page 34-12
Configuring PIMv2 BSR, page 34-16
Force (IETF)
34-8.
34-8.
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
sparse-dense-mode—Causes the interface to be treated in the mode
•
in which the group belongs. Sparse-dense-mode is the recommended
setting.
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.
(a standalone, Cisco-proprietary protocol separate from PIMv1)
(a standards track protocol in the Internet Engineering Task
and the
"Auto-RP and BSR Configuration Guidelines" section on
Chapter 34
Configuring IP Multicast Routing
"PIMv1 and PIMv2 Interoperability"
"PIMv1 and PIMv2
34-10.
78-17058-01
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Troubleshooting
