Purpose
Command or Action
Example:
Switch(config-if)#
ip igmp
•
deny
—
Drops the report. If you configure this throttling action, the
entries that were previously in the forwarding table are not removed
but are aged out. After these entries are aged out and the maximum
number of entries is in the forwarding table, the switch drops the next
IGMP report received on the interface.
max-groups action replace
•
replace
—
Replaces the existing group with the new group for which
the IGMP report was received. If you configure this throttling action,
the entries that were previously in the forwarding table are removed.
When the maximum number of entries is in the forwarding table, the
switch replaces a randomly selected entry with the received IGMP
report.
To prevent the switch from removing the forwarding-table entries, you can
configure the IGMP throttling action before an interface adds entries to the
forwarding table.
To return to the default action of dropping the report, use the
no ip
igmp max-groups action
interface configuration command.
Note
Returns to privileged EXEC mode.
end
Example:
Switch(config)#
end
Step 5
Verifies your entries.
show running-config interface
interface-id
Step 6
Example:
Switch#
show running-config
interface gigabitethernet1/0/1
(Optional) Saves your entries in the configuration file.
copy running-config startup-config
Example:
Switch#
copy running-config
Step 7
startup-config
Related Topics
IGMP Filtering and Throttling, on page 126
Restrictions for IGMP Snooping, on page 116
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
158
How to Configure IGMP Snooping and MVR
Содержание Catalyst 2960 Series
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