mac-address mac-learning disable

Syntax

mac-address mac-learning disable

undo mac-address mac-learning disable

View

Layer 2 Ethernet interface view, VLAN view (available only on the HPE 3100 v2 EI), port group view, Layer 2 aggregate interface view

Default level

2: System level

Parameters

None

Description

Use mac-address mac-learning disable to disable MAC address learning. Depending on the view that you entered, you can disable it on a Layer 2 interface or a group of Ethernet ports, or on a VLAN.

Use undo mac-address mac-learning disable to enable MAC address learning. Depending on the view that you entered, you can disable it on a Layer 2 interface or a group of Ethernet ports, or on a VLAN.

By default, MAC address learning is enabled.

Follow these guidelines when you configure MAC address learning:

• Only the HPE 3100 v2 EI switch supports disabling MAC address learning on a VLAN.

• You may 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 may result in broadcast storms, enable broadcast storm suppression after you disable MAC address learning on a port.

Related commands: display mac-address mac-learning.

	NOTE: When MAC address learning is disabled, the learned MAC addresses remain valid until they age out.

Examples

# Disable MAC address learning on port Ethernet 1/0/1.

<Sysname> system-view
[Sysname] interface ethernet 1/0/1
[Sysname-Ethernet1/0/1] mac-address mac-learning disable

# Disable MAC address learning on VLAN 10. (Available only on the HPE 3100 v2 EI switch)

<Sysname> system-view
[Sysname] vlan 10
[Sysname-vlan10] 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