Cisco WS-C3560E-48PD-SF Command Reference - Page 242
mac access-group
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mac access-group Chapter 2 Catalyst 3560 Switch Cisco IOS Commands mac access-group Use the mac access-group interface configuration command to apply a MAC access control list (ACL) to a Layer 2 interface. Use the no form of this command to remove all MAC ACLs or the specified MAC ACL from the interface. You create the MAC ACL by using the mac access-list extended global configuration command. mac access-group {name} in no mac access-group {name} Syntax Description name in Specify a named MAC access list. Specify that the ACL is applied in the ingress direction. Outbound ACLs are not supported on Layer 2 interfaces. Defaults No MAC ACL is applied to the interface. Command Modes Interface configuration (Layer 2 interfaces only) Command History Release 12.1(19)EA1 Modification This command was introduced. Usage Guidelines You can apply MAC ACLs only to ingress Layer 2 interfaces. You cannot apply MAC ACLs to Layer 3 interfaces. On Layer 2 interfaces, you can filter IP traffic by using IP access lists and non-IP traffic by using MAC access lists. You can filter both IP and non-IP traffic on the same Layer 2 interface by applying both an IP ACL and a MAC ACL to the interface. You can apply no more than one IP access list and one MAC access list to the same Layer 2 interface. If a MAC ACL is already configured on a Layer 2 interface and you apply a new MAC ACL to the interface, the new ACL replaces the previously configured one. If you apply an ACL to a Layer 2 interface on a switch, and the switch has an input Layer 3 ACL or a VLAN map applied to a VLAN that the interface is a member of, the ACL applied to the Layer 2 interface takes precedence. When an inbound packet is received on an interface with a MAC ACL applied, the switch checks the match conditions in the ACL. If the conditions are matched, the switch forwards or drops the packet, according to the ACL. If the specified ACL does not exist, the switch forwards all packets. For more information about configuring MAC extended ACLs, see the "Configuring Network Security with ACLs" chapter in the software configuration guide for this release. 2-210 Catalyst 3560 Switch Command Reference 78-16405-05