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xStack® DGS-3420 Series Layer 2 Managed Stackable Gigabit Switch CLI Reference Guide
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DGS-3420-28SC:admin#clear mld_snooping data_driven_group all
Command: clear mld_snooping data_driven_group all
Success.
DGS-3420-28SC:admin#
55-20 config mld_snooping data_driven_learning
Description
This command is used to enable or disable the data driven learning of a MLD snooping group.
When the data-driven learning is enabled for the VLAN, when the switch receives the IP multicast
traffic, on this VLAN, an MLD snooping group will be created. That is, the learning of an entry is
not activated by MLD membership registration, but activated by the traffic. For an ordinary MLD
snooping entry, the MLD protocol will take care the aging out of the entry. For a data-driven entry,
the entry can be specified not to be age out or to be aged out by the aged timer. When the data
driven learning is enabled, and data driven table is not full, the multicast filtering mode for all ports
are ignored. That is, the multicast packets will be forwarded to router ports. If data driven learning
table is full, the multicast packets will be forwarded according to multicast filtering mode.
Note that if a data-driven group is created and MLD member ports are learned later, the entry will
become an ordinary MLD snooping entry. That is, the aging out mechanism will follow the ordinary
MLD snooping entry.
Format
config mld_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>}(1)
Parameters
all - Specify to configure all VLANs and VLAN IDs.
vlan_name - Specify the VLAN name to be configured.
<vlan_name> - Specify the VLAN name.
vlanid - Specify the VLAN ID to be configured.
<vlanid_list> - Specify a list of VLAN IDs.
state - Specify whether to enable or disable the data driven learning of an MLD snooping group.
This is enabled by default.
enable - Enable data driven learning of an MLD snooping group.
disable
- Disable data driven learning of an MLD snooping group.
aged_out - Enable or disable the aging of the entry. This is disabled by default.
enable - Enable the aging of the entry.
disable - Disable the aging of the entry.
expiry_time - Specify the data driven group lifetime in seconds. This parameter is valid only
when aged_out is enabled.
<sec 1-65535> - Specify the time between 1 and 65535 seconds.
Restrictions
Only Administrator, Operator and Power-User level users can issue this command.