Chapter 23
| Multicast Filtering Commands
MLD Filtering and Throttling
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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)#
ipv6 mld max-groups
action
This command sets the MLD throttling action for an interface on the switch.
Syntax
ipv6 mld max-groups action
{
deny
|
replace
}
deny
- The new multicast group join report is dropped.
replace
- The new multicast group replaces an existing group.
Default Setting
Deny
Command Mode
Interface Configuration (Ethernet)
Command Usage
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.
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