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Cisco7600 Series Router Cisco IOS Software Configuration Guide—12.1E
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Chapter23 Con figuring Network Security
Configuring VLAN ACLs
This example shows how to block all traffic to or from MAC address 0050.3e8d.6400 in VLAN 12:
Router# configure terminal
Router(config)# mac-address-table static 0050.3e8d.6400 vlan 12 drop
Configuring VLAN ACLs
Note Releases 12.1(11b)E or later supports VLAN ACLs (VACLs).
The following sections describe VACLs:
•Understanding VACLs, page 23-8
•Configuring VACLs, page 23-11
•Configuring VACL Logging, page 23-17

Understanding VACLs

These sections describe VACLs:
•VACL Overview, page 23-8
•Bridged Packets, page 23-9
•Routed Packets, page 23-10
•Multicast Packets, page 23-11

VACL Overview

VACLs can provide access control for all packets that are bridged within a VLAN or that are routed into
or out of a VLAN or, with releases 12.1(13)E or later, a WAN interface for VACL capture. Unlike regular
Cisco IOS standard or extended ACLs that are configured on router interfaces only and are applied on routed
packets only, VACLs apply to all packets and can be applied to any VLAN or WAN interface. VACLS are
processed in hardware. VACLs use Cisco IOS ACLs. VACLs ignore any Cisco IOS ACL fields that are not
supported in hardware.
You can configure VACLs for IP, IPX, and MAC-Layer traffic. VACLs applied to WAN interfaces
support only IP traffic for VACL capture.
When you configure a VACL and apply it to a VLAN, all packets entering the VLAN are checked against
this VACL. If you apply a VACL to the VLAN and an ACL to a routed interface in the VLAN, a packet
coming in to the VLAN is first checked against the VACL and, if permitted, is then checked against the
input ACL before it is handled by the routed interface. When the packet is routed to another VLAN, it
Command Purpose
Router(config)# mac-address-table static mac_address
vlan vlan_ID drop
Blocks all traffic to or from the configured MAC address in
the specified VLAN.
Router(config)# no mac-address-table static
mac_address vlan vlan_ID
Clears MAC address-based blocking.