DES-1228/ME Layer 2 Metro Ethernet Switch CLI Reference Manual
141
config igmp snooping data_driven_learning
Purpose
Used to configure the data driven learning of a IGMP snooping group.
Syntax
config igmp_snooping data_driven_learning [ vlan_name <vlan_name 32> |all]
{aged_out [enable|disable]}(1)
Description
This command is used to enable/disable the data driven learning of a IGMP snooping
group.
When data-driven learning is enabled for the VLAN, or when the switch receives the IP
multicast traffic on this VLAN, an IGMP snooping group will be created. The learning of an
entry is not activated by IGMP membership registration, but by the traffic. For an ordinary
IGMP snooping entry, the IGMP protocol will acknowledge the aging out of the entry. For a
data-driven entry, the entry can be specified so that it won’t be ageout or that it will be
ageout by the host_timeout timer.
When the data driven learning is enabled, the multicast filtering mode for all ports are
ignored so that the multicast packets will be forwarded to router ports.
Note that if a data-driven group is created and IGMP member ports are learned later, the
entry will become an ordinary IGMP snooping entry. The ageing out mechanism will follow
the ordinary IGMP snooping entry.
Parameters
<vlan_name 32>
−
specifies the vlan name to be configured.
all –
specifies all data driven entries.
aged_out
−
Used to enable/disable the aging on the entry. By default, the state is in
disabled state.
Restrictions
Only Administrator-level users can issue this command.
Example usage:
To configure the igmp snooping data driven entry:
DES-1228/ME:4#show igmp_snooping group
Command: show igmp_snooping group
VLAN Name : default
Multicast Group: 224.0.0.22
MAC Address : 01-00-5E-00-00-16
Member Ports :
Router Ports : 1,13-20
VLAN Name : default
Multicast Group: 239.255.255.250
MAC Address : 01-00-5E-7F-FF-FA
Member Ports :
Router Ports : 1,13-20
Total Entries : 2
DES-1228/ME:4#
