Configuring the SSM group range
When a PIM-SM enabled interface receives a multicast packet, it checks whether the multicast group address of the packet is in the SSM group range. If the multicast group address is in this range, the PIM mode for this packet is PIM-SSM. If the multicast group address is not in this range, the PIM mode is PIM-SM.
Configuration guidelines
When you configure the PIM-SSM group range, follow these guidelines:
Configure the same SSM group range is configured on all routers in the entire PIM-SSM domain. Otherwise, multicast information cannot be delivered through the SSM model.
When a member of a multicast group in the SSM group range sends an IGMPv1 or IGMPv2 report message, the switch does not trigger a (*, G) join.
Configuration procedure
To configure an SSM group range:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter PIM view. | pim | N/A |
3. Configure the SSM group range. | ssm-policy acl-number | The default range is 232.0.0.0/8. |