To create a PIM-SM domain for MSDP (Multicast Source Discovery Protocol), you must restrict the reach of Bootstrap Router (BSR) advertisements by defining a VLAN (Virtual LAN) border. BSR advertisements are not sent out of a PIM interface configured as a VLAN border, thereby defining a PIM domain for MSDP.
To configure a PIM VLAN border, use the command:
configure pim vlan_name border