Command Line Reference Guide

Access Control Lists (ACL) | 227
The following commands configure Extended MAC ACLs.
• deny
• mac access-list extended
• permit
• seq
deny
c e s
Configure a filter to drop packets that match the filter criteria.
Syntax
deny {any | host mac-address | mac-source-address mac-source-address-mask} {any | host
mac-address | mac-destination-address mac-destination-address-mask} [ethertype-operator]
[count [byte]] [log] [monitor]
To remove this filter, you have two choices:
• Use the no seq sequence-number command syntax if you know the filter’s sequence number or
• Use the no deny {any | host mac-address | mac-source-address mac-source-address-mask}
{any | host mac-address | mac-destination-address mac-destination-address-mask}
command.
Parameters
Note: See also Commands Common to all ACL Types and Common MAC Access List
Commands.
any Enter the keyword any to drop all packets.
host mac-address Enter the keyword host followed by a MAC address to drop
packets with that host address.
mac-source-address
Enter the source MAC address in nn:nn:nn:nn:nn:nn format.
mac-source-address-mask
Specify which bits in the MAC address must match.
The MAC ACL supports an inverse mask, therefore, a mask of
ff:ff:ff:ff:ff:ff allows entries that do not match and a mask of
00:00:00:00:00:00 only allows entries that match exactly.
mac-destination-address
Enter the destination MAC address and mask in
nn:nn:nn:nn:nn:nn format.
mac-destination-address-mask
Specify which bits in the MAC address must match.
The MAC ACL supports an inverse mask, therefore, a mask of
ff:ff:ff:ff:ff:ff allows entries that do not match and a mask of
00:00:00:00:00:00 only allows entries that match exactly.
ethertype operator
(OPTIONAL) To filter based on protocol type, enter one of
the following Ethertypes:
•
ev2 - is the Ethernet II frame format.
•
llc - is the IEEE 802.3 frame format.
•
snap - is the IEEE 802.3 SNAP frame format.
count (OPTIONAL) Enter the keyword count to count packets
processed by the filter.
byte (OPTIONAL) Enter the keyword byte to count bytes
processed by the filter.