Enabling PIM-SM
The implementation of the SSM model is based on subsets of PIM-SM. Therefore, you must enable PIM-SM before configuring PIM-SSM.
When you deploy a PIM-SSM domain, enable PIM-SM on non-border interfaces of the routers.
![[IMPORTANT: ]](images/important.png) | IMPORTANT: All the interfaces on a device must be enabled with the same PIM mode. | |
To enable PIM-SM:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enable IP multicast routing, and enter MRIB view. | multicast routing [ vpn-instance vpn-instance-name ] | By default, IP multicast routing is disabled. |
3. Return to system view. | quit | N/A |
4. Enter interface view. | interface interface-type interface-number | N/A |
5. Enable PIM-SM. | pim sm | By default, PIM-SM is disabled. |