Cisco Catalyst 9400 User Manual

• It is recommended that you disable MAC address learning only in VLANs with two ports. If you disable
MAC address learning on a VLAN with more than two ports, every packet entering the switch is flooded
in that VLAN domain.
• If you disable MAC address learning on a VLAN that includes a secure port, MAC address learning is
not disabled on that port.
Procedure
PurposeCommand or Action
Enters the global configuration mode.configure terminal
Example:
Step 1
Device# configure terminal
Disable MAC address learning on a specified
VLAN or VLANs.
no mac-address-table learning vlan[vlan-id
|,vlan-id | -vlan-id,]
Step 2
Example:
You can specify a single VLAN ID or a range
of VLAN IDs separated by a hyphen or comma.
Device(config)# no mac-address-table
learning {vlan vlan-id [,vlan-id |
-vlan-id]
Valid VLAN IDs range from 2 - 4093. It cannot
be an internal VLAN.
Returns to privileged EXEC mode.end
Example:
Step 3
Device(config)# end
Verify the configuration.show mac-address-tablelearning vlan[vlan-id
]
Step 4
You can display the MAC address learning
status of all VLANs or a specified VLAN by
Example:
entering the show mac-address-table learning
[vlan vlan-id] privileged EXEC command.
Device# show mac-address-table learning
[vlan vlan-id]
(Optional) Save your entries in the configuration
file.
copy running-config startup-config
Example:
Step 5
Device# copy running-config
startup-config
(Optional) Reenable MAC address learning on
VLAN in a global configuration mode.
default mac address-table learning
Example:
Step 6
Device# default mac address-table
Adding and Removing Static Address Entries
Follow these steps to add a static address:
System Management Configuration Guide, Cisco IOS XE Bengaluru 17.4.x (Catalyst 9400 Switches)
34
Administering the Device
Adding and Removing Static Address Entries

Cisco Catalyst 9400 Specifications

General

Brand	Cisco
Model	Catalyst 9400
Category	Switch
Language	English