H3C Technologies H3C S7500E Series Switches - Manual (Page 172)

6-35
Configuring the SSM Group Range
As for whether the information from a multicast source is delivered to the receivers based on
the PIM-SSM model or the PIM-SM model, this depends on whether the group address in the (S,
G) channel subscribed by the receivers falls in the SSM group range. All PIM-SM-enabled
interfaces assume that multicast groups within this address range are using the PIM-SSM
model.
Perform the following configuration on all routers in the PIM-SM domain.
Follow these steps to configure an SSM multicast group range:
To do... Use the command... Remarks
Enter system view system-view —
Enter public instance PIM view
or VPN instance PIM view
pim [ vpn-instance
vpn-instance-name ]
—
Configure the SSM group range ssm-policy acl-number
Optional
232.0.0.0/8 by default
z Make sure that the same SSM group range is configured on all routers in the entire domain.
Otherwise, multicast information cannot be delivered through the SSM model.
z When a member of a multicast group in the SSM group range sends an IGMPv1 or IGMPv2
report message, the device does not trigger a (*, G) join.
Configuring PIM Common Features
For the functions or parameters that can be configured in both PIM view and interface view
described in this section:
z Configurations performed in PIM view are effective to all interfaces, while configurations
performed in interface view are effective to the current interface only.
z If the same function or parameter is configured in both PIM view and interface view, the
configuration made in interface view has preference over the configuration made in PIM
view, regardless of the configuration sequence.