Manual

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the synchronization with these variables of non-queries.
Max Response Time in Query Message has an exponential range, with maximum value from
25.5 secs of v2 to 53 mins, which can be used in links of great capacity.
In order to increase strength, the host retransmits State-Change message.
Additional data is defined to adapt future extension.
Report group is sent to 224.0.0.22 to help with IGMP Snooping of Layer 2 Switch.
Report group can include more than one group record, and it allows using small group to
report complete current status.
The host does not restrain operation any more, which simplifies the implement and allows
direct membership trace.
In querying messages, the new router side restraint process (S sign) modified the existing
strength of IGMPv2.
28.9.2 IGMP Configuration Task List
Enable IGMP (Required)
Configure IGMP sub-parameters (Optional)
(1) Configure IGMP group parameters
Configure IGMP group filtering conditions
Configure IGMP to join in group
Configure IGMP to join in static group
(2) Configure IGMP query parameters
Configure the interval of IGMP sending query message
Configure the maximum response time of IGMP query
Configure time-out of IGMP query
(3) Configure IGMP version
Disable IGMP Protocol
Enable IGMP Protocol
There are not specific commands for enabling IGMP Protocol on the Layer 3 switch. Enabling
any multicast protocol under corresponding interface will automatically enable IGMP.
Command
Explanation
Global Mode
ip dvmrp multicast-routing | ip pim
multicast-routing
To enable global multicast protocol is the
prerequisite to enable IGMP protocol, the “no ip
dvmrp multicast-routing | no ip pim multicast-
routing” commands disable multicast protocol and
IGMP protocol. (Required)
Command
Explanation