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Multicast Listener Discovery (MLD) Snooping
Displaying MLD Status and Configuration
The following information is shown:
■ VLAN ID and name
■ port information for each IPv6 multicast group address in the VLAN
(general group command) or for the specified IPv6 multicast group
address (specific group command):
• group multicast address
• last reporter: last MLD host to send a join to the group address
• group expiry time: the time until the group expires if no further joins
are seen
• port name for each port
• port type for each port: Ethernet connection type
• port mode for each port: auto (follows MLD snooping rules; that is,
packets are forwarded for joined groups), forward (all multicast pack-
ets are forwarded to this group), or blocked (all multicast packets are
dropped, except that packets for well-known addresses are for-
warded)
• expiry time for each port: amount of time until this port is aged out
of the multicast address group, unless a join is received
Statistics
The general form the of the command shows the total number of MLD-enabled
VLANs and a count of multicast groups currently joined. Both forms of the
command show VLAN IDs and names, as well as the number of filtered and
standard multicast groups and the total number of multicast groups.
Syntax: show ipv6 mld statistics
Shows MLD statistics for all MLD-enabled VLANs
Syntax: show ipv6 mld vlan <vid> statistics
Shows MLD statistics for the specified VLAN
vid—VLAN ID