27
Step Command
Remarks
2.
Enter interface view.
•
Enter Layer 2 Ethernet interface
view:
interface
interface-type
interface-number
•
Enter Layer 2 aggregate
interface view:
interface bridge-aggregation
interface-number
N/A
3.
Add the interface to a
multiport unicast MAC
address entry.
mac
-
address multiport
mac
-
address
vlan
vlan
-
id
By default, no multiport unicast
MAC address entry is configured
on the interface.
Make sure you have created the
VLAN and assigned the interface
to the VLAN.
Disabling MAC address learning
MAC address learning is enabled by default. To prevent the MAC address table from being saturated
when the device is experiencing attacks, disable MAC address learning. For example, you can disable
MAC address learning to prevent the device from being attacked by a large amount of frames with
different source MAC addresses.
When MAC address learning is disabled, the device immediately deletes the existing dynamic MAC
address entries.
Disabling global MAC address learning
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Disable global MAC address
learning.
undo mac-address mac-learning
enable
By default, global MAC address
learning is enabled.
Disabling global MAC address learning disables MAC address learning on all interfaces.
The global MAC address learning configuration does not take effect in a TRILL network, in a VPLS VSI, or
for an S-channel. For information about TRILL, see
TRILL Configuration Guide
. For information about VSIs,
see
MPLS Configuration Guide
. For information about S-channels, see
EVB Configuration Guide
.
Disabling MAC address learning on an interface
When global MAC address learning is enabled, you can disable MAC address learning on a single
interface.
To disable MAC address learning on an interface: