Huawei Quidway S5600 Series Operation Manual page 452

Operation Manual – Multicast Protocol
Quidway S5600 Series Ethernet Switches-Release 1510
If the host runs IGMP version 1, it does not send IGMP leave messages when leaving a
group, so the conditions will be the same as described in the procedure above.
III. IGMP querier substitution rules
The lifetime of an IGMP querier is limited. When the IGMP querier times out, the querier
will stop sending query messages and another router will replace the IGMP querier.
IV. The maximum query time of IGMP packets
When the host receives a query message, it will set a timer for each of its multicast
groups. The timer value is selected from 0 to the maximum response time at random.
When the value of a timer decreases to 0, the host will send the membership
information of the multicast group.
Through configuring the reasonable maximum response time, you can enable the host
to respond to the query information quickly and enable the Layer 3 switch to understand
the membership information of multicast groups quickly.
Table 6-3 Configure IGMP query packets
Operation
Enter system view
Enter
view
Enable
current interface
Configure
interval
Configuring the interval of
sending
group-specific
packets
Configuring the times of
sending
group-specific
packets
system-view
VLAN interface interface Vlan-interface
interface-number
IGMP on the
igmp enable
the query igmp
seconds
igmp
IGMP
lastmember-queryinterv
query
al seconds
IGMP
igmp
query robust-value
Huawei Technologies Proprietary
Command
timer query
robust-count
6-8
Chapter 6 IGMP Configuration
Description
—
—
Required
IGMP is disabled on the
interface by default.
Optional
The query interval is 60
seconds by default.
Optional
By default, the interval of
sending IGMP
group-specific query
packets is 1 second.
Optional
By default, the times of
sending IGMP
group-specific query
packets is 2.