Enabling IPv4 PIM-SM

Context

PIM-DM and PIM-SM cannot be enabled simultaneously in the public network instance or VPN instances.

It is recommended that you enable PIM-SM on all interfaces in a PIM-SM domain to ensure that the interfaces can establish neighbor relationships with all connected PIM devices.

If PIM-SM and IGMP need to be enabled on the same interface, enable PIM-SM before IGMP.

Procedure

Enable PIM-SM for a public network instance.
1. Run system-view
  The system view is displayed.
2. Run multicast routing-enable
  IP multicast routing is enabled.
3. Run interface interface-type interface-number
  The interface view is displayed.
4. (Optional) On an Ethernet interface, run undo portswitch
  The interface is switched to Layer 3 mode.
  
  By default, an Ethernet interface works in Layer 2 mode.
  
  Only the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S support switching between Layer 2 and Layer 3 modes.
5. Run pim sm
  PIM-SM is enabled.
Enable PIM-SM for a VPN instance.
A VPN instance must exist before you enable PIM-SM in it.
1. Run system-view
  The system view is displayed.
2. Run ip vpn-instance vpn-instance-name
  The VPN instance view is displayed.
3. Run ipv4-family
  The IPv4 address family is enabled for the VPN instance, and the VPN instance IPv4 address family view is displayed.
4. Run route-distinguisher route-distinguisher
  An RD is configured for the VPN instance IPv4 address family.
5. Run multicast routing-enable
  IP multicast routing is enabled.
6. Run quit
  Return to the VPN instance view.
7. Run quit
  Return to the system view.
8. Run interface interface-type interface-number
  The interface view is displayed.
9. Run ip binding vpn-instance vpn-instance-name
  The interface is associated with a specified VPN instance.
10. Run pim sm
  PIM-SM is enabled.