![]() This command does not take effect in a TRILL network or for an S-channel. With MAC address learning enabled globally, you can disable MAC address learning for an interface or VLAN. For more information about broadcast storm suppression, see Layer 2-LAN Switching Configuration Guide. The device then stops learning MAC addresses and cannot dynamically update the MAC address table.īecause disabling MAC address learning can result in broadcast storms, enable broadcast storm suppression after you disable MAC address learning on an interface. If you disable MAC address learning globally, MAC address learning is disabled for all interfaces. You can disable MAC address learning on a per-interface basis. To avoid such attacks, you can disable MAC address learning by following these guidelines: To prevent the MAC address table from becoming saturated, you can disable MAC address learning.įor example, a number of packets with different source MAC addresses reaching a device can affect the MAC address table update. S-channel interface view, S-channel aggregate interface view Layer 2 Ethernet interface view, Layer 2 aggregate interface view Undo mac-address mac-learning en able Default ![]() Use undo mac-address mac-learning enable to disable MAC address learning globally, on an interface, or on a VLAN. Use mac-address mac-learning enable to enable MAC address learning globally, on an interface, or on a VLAN.
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