D-Link xStack DGS-3420 Series Reference Manual page 464

xStack® DGS-3420 Series Layer 2 Managed Stackable Gigabit Switch CLI Reference Guide
Parameters
all - Specifies to clear all the entries learned by the data driven feature.
vlan_name - Specifies the VLAN name used.
<vlan_name 32> - Enter the VLAN name used here.
vlanid - Specifies that VLAN ID list used.
<vlanid_list> - Enter the VLAN ID list used here.
<ipaddr> - Enter the IP address of the data driven group to be cleared here.
all - Specifies that all the IP addresses will be cleared.
Restrictions
Only Administrator, Operator and Power-User level users can issue this command.
Example
To clear the IGMP snooping group learned by data driven:
DGS-3420-28SC:admin#clear igmp_snooping data_driven_group all
Command: clear igmp_snooping data_driven_group all
Success.
DGS-3420-28SC:admin#
39-20 config igmp_snooping data_driven_learning
Description
This command is used to enable or disable the data driven learning of an IGMP snooping group.
When data-driven learning is enabled for a VLAN, when the switch receives IP multicast traffic on this
VLAN, an IGMP snooping group will be created. The learning of an entry is not activated by an IGMP
membership registration, but activated by traffic. For an ordinary IGMP snooping entry, the IGMP
protocol will take care of the aging out of the entry. For a data-driven entry, the entry can be specified
not to aged out by the aged timer.
When data driven learning is enabled and the data driven table is not full, the multicast filtering mode
for all ports will be ignored. The multicast packets will be forwarded to router ports. If the data driven
learning table is full, multicast packets will be forwarded according to the multicast filtering mode.
Note that if a data-driven group is created and IGMP member ports are learned later on, the entry will
become an ordinary IGMP snooping entry. The aging out mechanism will follow the ordinary IGMP
snooping entry.
Format
config igmp_snooping data_driven_learning [all | vlan_name <vlan_name 32> | vlanid
<vlanid_list>] {state [enable | disable] | aged_out [enable | disable] | expiry_time <sec 1-65535>}
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