Chapter 24
| Multicast Filtering Commands
MLD Filtering and Throttling
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◆ 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 to 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: 1-255)
Default Setting
255
Command Mode
Interface Configuration (Ethernet, Port Channel)
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.
Example
Console(config)#interface ethernet 1/1
Console(config-if)#ipv6 mld max-groups 10
Console(config-if)#
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