Configuring PIM-SM support in a VLAN context

PIM-SM support must be configured in each VLAN where you want PIM-SM forwarding of multicast traffic. This illustrates the following per-VLAN configuration steps:
  • Enabling PIM-SM on VLAN 120 and allowing the default any option to select a source IP address for PIM-SM packets forwarded from this VLAN. (Because the VLAN in this example is configured with only one IP address—120-10.10.2—it is this address that will be used for the source.)

  • Increasing the DR priority on this VLAN from the default 1 to 100.

  • Leaving the other per-VLAN PIM-SM fields in their default settings.

Example of Enabling PIM-SM in a VLAN