H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – Multicast
H3C S7500 Series Ethernet Switches Chapter 3
IGMP Snooping Configuration
3-7
Caution:
z Although both Layer 2 and Layer 3 multicast protocols can run on the same switch
simultaneously, they cannot run simultaneously in a VLAN or its corresponding
virtual interface.
z Before enabling IGMP Snooping in VLAN view, you must enable IGMP Snooping
globally in system view. Otherwise, the IGMP Snooping feature cannot be enabled
in VLAN view.
3.2.2 Configuring Timers
This configuration task is to manually configure the aging timer of the router port, the
aging timer of the multicast member ports, and the query response timer.
z If the switch receives no IGMP general query message from a router within the
aging time of the router port, the switch removes the router port from the port
member lists of all MAC multicast groups.
z If the switch receives no IGMP host report message, it sends an IGMP
group-specific query message to the port and triggers the query response timer of
the IP multicast group.
z If the switch receives no IGMP host report message within the aging time of the
member port, it sends an IGMP group-specific query message to the port and
triggers the query response timer of the IP multicast group.
Follow these steps to configure timers:
To do... Use the command... Remarks
Enter system view system-view —
Configure the aging
timer of the router port
igmp-snooping
router-aging-time
seconds
Optional
By default, the aging time of
the router port is 105
seconds.
Configure the query
response timer
igmp-snooping
max-response-time
seconds
Optional
By default, the query
response timeout time is 10
seconds.
Configure the aging
timer of the multicast
member port
igmp-snooping
host-aging-time seconds
Optional
By default, the aging time of
multicast member ports is
260 seconds.