HP 830

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• You might need to disable MAC address learning to prevent the MAC address table from being
saturated. For example, when your device is being attacked by many packets with different source
MAC addresses, it affects the update of the MAC address table.
• Because disabling MAC address learning might result in broadcast storms, enable broadcast storm
suppression after you disable MAC address learning on an interface.
Examples
# Disable global MAC address learning.
<Sysname> system-view
[Sysname] mac-address mac-learning disable
# Disable MAC address learning on Ten-GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface Ten-GigabitEthernet 1/0/1
[Sysname-Ten-GigabitEthernet1/0/1] mac-address mac-learning disable
# Disable MAC address learning on Bridge-Aggregation 1.
<Sysname> system-view
[Sysname] interface bridge-aggregation 1
[Sysname-Bridge-Aggregation1] mac-address mac-learning disable
Related commands
display mac-address mac-learning
mac-address max-mac-count
Use mac-address max-mac-count count to configure the maximum number of MAC addresses that can
be learned on an interface.
Use mac-address max-mac-count disable-forwarding to disable the device from forwarding frames with
unknown source MAC addresses when the upper limit is reached.
Use undo mac-address max-mac-count to restore the default maximum number of MAC addresses that
can be learned on an Ethernet interface.
Use undo mac-address max-mac-count disable-forwarding to allow the device to forward frames
received on an Ethernet interface with unknown source MAC addresses when the upper limit is reached.
Syntax
mac-address max-mac-count { count | disable-forwarding }
undo mac-address max-mac-count [ disable-forwarding ]
Default
The maximum number of MAC addresses that can be learned on an interface varies with device models.
Frames received are forwarded when the upper limit is reached.
Views
Layer 2 Ethernet interface view, port group view, Layer 2 aggregate interface view
Default command level
2: System level