Users Guide

Version Description
7.5.1.0 Introduced on the C-Series.
7.4.1.0 Added the monitor option.
6.1.1.0 Introduced on the E-Series.
Usage Information
When you use the log option, the CP processor logs details about the packets that match. Depending on
how many packets match the log entry and at what rate, the CP may become busy as it has to log these
packets’ details.
NOTE: When you congure the ACL logging and byte counters simultaneously, byte counters may
display an incorrect value. Congure packet counters with logging instead.
Related Commands
deny — congures a lter to drop packets.
permit — congures a lter to forward packets.
Extended MAC ACL Commands
When an access-list is created without any rule and then applied to an interface, ACL behavior reects implicit permit. The following
commands congure Extended MAC ACLs.
The platform supports both Ingress and Egress MAC ACLs.
NOTE: For more information, also refer to the Commands Common to all ACL Types and Common MAC Access List
Commands sections.
deny
To drop packets that match the lter criteria, congure a lter.
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 [interval minutes]
[threshold-in-msgs [count]] [monitor]
To remove this lter, you have two choices:
• Use the no seq sequence-number command if you know the lter’s sequence number.
• 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
any Enter the keyword any to drop all packets.
host mac-address Enter the keyword host and then enter a MAC address to drop packets with that
host address.
mac-source-
address
Enter a MAC address in nn:nn:nn:nn:nn:nn format.
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Access Control Lists (ACL)