3Com S7906E - Switch, Configuration Manual

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To do... Use the command... Remarks
Disable the SPT switchover
spt-switch-threshold infinity
[ group-policy acl-number
[ order order-value ] ]
Optional
By default, the device switches
to the SPT immediately after it
receives the first multicast
packet.
For an S7900E Series Ethernet switch, once a multicast forwarding entry is created, subsequent
multicast data will not be encapsulated in register messages before being forwarded even if a register
outgoing interface is available. Therefore, to avoid forwarding failure, do not use spt-switch-threshold
infinity command on a switch that may become an RP (namely, a static RP or a C-RP).
Configuring PIM-SSM
The PIM-SSM model needs the support of IGMPv3. Therefore, be sure to enable IGMPv3 on PIM
routers with multicast receivers.
PIM-SSM Configuration Task List
Complete these tasks to configure PIM-SSM:
Task Remarks
Enabling PIM-SM Required
Configuring the SSM Group Range Optional
Configuring PIM Common Features Optional
Configuration Prerequisites
Before configuring PIM-SSM, complete the following task:
z
Configure any unicast routing protocol so that all devices in the domain are interoperable at the
network layer.
Before configuring PIM-SSM, prepare the following data:
z
The SSM group range