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HAPTER
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| Multicast Filtering Commands
MLD Filtering and Throttling
– 1253 –
COMMAND USAGE
◆ The MLD filtering profile must first be created with the ipv6 mld profile
command before being able to assign it to an interface.
◆ Only one profile can be assigned to an interface.
◆ A profile can also be assigned to a trunk interface. When ports are
configured as trunk members, the trunk uses the filtering profile
assigned to the first port member in the trunk.
EXAMPLE
Console(config)#interface ethernet 1/1
Console(config-if)#ipv6 mld filter 19
Console(config-if)#
ipv6 mld
max-groups
This command configures the maximum number of MLD groups that an
interface can join. Use the no form restore the default setting.
SYNTAX
ipv6 mld max-groups number
no ipv6 mld max-groups
number - The maximum number of multicast groups an interface
can join at the same time. (Range: 1-1023)
DEFAULT SETTING
1023
COMMAND MODE
Interface Configuration (Ethernet)
COMMAND USAGE
◆ MLD throttling sets a maximum number of multicast groups that a port
can join at the same time. When the maximum number of groups is
reached on a port, the switch can take one of two actions; either “deny”
or “replace.” If the action is set to deny, any new MLD join reports will
be dropped. If the action is set to replace, the switch randomly
removes an existing group and replaces it with the new multicast
group.
◆ MLD throttling can also be set on a trunk interface. When ports are
configured as trunk members, the trunk uses the throttling settings of
the first port member in the trunk.
◆ If the maximum number of MLD groups is set to the default value, the
running status of MLD throttling will change to false. This means that
any configuration for MLD throttling will have no effect until the
maximum number of MLD groups is configured to another value.
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