H3c-technologies H3C WX6000 Series Access Controllers Uživatelský manuál Strana 330

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29-12
Configuring IGMP queries and responses globally
Follow these steps to configure IGMP queries and responses globally:
To do... Use the command... Remarks
Enter system view
system-view
Enter IGMP Snooping view
igmp-snooping
Configure the maximum response
time to IGMP general queries
max-response-time
interval
Optional
10 seconds by default
Configure the IGMP last-member
query interval
last-member-query-interval
interval
Optional
1 second by default
Configuring IGMP queries and responses in a VLAN
Follow these steps to configure IGMP queries and responses in a VLAN:
To do... Use the command... Remarks
Enter system view
system-view
Enter VLAN view
vlan
vlan-id
Configure IGMP general query
interval
igmp-snooping query-interval
interval
Optional
60 seconds by default
Configure the maximum response
time to IGMP general queries
igmp-snooping
max-response-time
interval
Optional
10 seconds by default
Configure the IGMP last-member
query interval
igmp-snooping
last-member-query-interval
interval
Optional
1 second by default
In the configuration, make sure that the IGMP general query interval is larger than the maximum
response time for IGMP general queries. Otherwise, multicast group members may be deleted by
mistake.
Configuring Source IP Address of IGMP Queries
Upon receiving an IGMP query whose source IP address is 0.0.0.0 on a port, the switch will not set that
port as a router port. This may prevent multicast forwarding entries from being correctly created at the
data link layer and cause multicast traffic forwarding failure in the end. When a Layer 2 device acts as
an IGMP-Snooping querier, to avoid the aforesaid problem, you are commended to configure a
non-all-zero IP address as the source IP address of IGMP queries.
Follow these steps to configure source IP address of IGMP queries:
To do... Use the command... Remarks
Enter system view
system-view
Enter VLAN view
vlan
vlan-id
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