H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – Multicast
H3C S7500E Series Ethernet Switches Chapter 2 IGMP Snooping Configuration
2-16
II. 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-inter
val interval
Optional
1 second by default
Caution:
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.
2.5.4 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
—
Configure the source
address of IGMP general
queries
igmp-snooping
general-query source-ip
{ current-interface |
ip-address }
Optional
0.0.0.0 by default