H3C Technologies H3C S3100 Series Switches - Manual (Page 244)

Operation Manual – Multicast
H3C S3100-52P Ethernet Switch Chapter 2 IGMP Snooping Configuration
2-7
Operation Command Description
Enable IGMP Snooping
globally
igmp
-snooping enable
Required
By default, IGMP
Snooping is disabled
globally.
Enter VLAN view
vlan vlan-id
—
Enable IGMP Snooping
on the VLAN
igmp
-snooping enable
Required
By default, IGMP
Snooping is disabled on
the VLAN.
Caution:
Before configuring 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.
2.2.2 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 general IGMP 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 packet to the port and enable 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 IGMP group-specific query to the port and enables the
query response timer of the IP multicast group.
Table 2-6
Configure timers
Operation Command Description
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.