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Version Description
7.6.1.0 Introduced on the S-Series.
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 configure the ACL logging and byte counters simultaneously, byte counters may
display an incorrect value. Configure packet counters with logging instead.
Related
Commands
● deny — configure a MAC ACL filter to drop packets.
● seq — configure a MAC ACL filter with a specified sequence number.
seq
Configure a filter with a specific sequence number.
Syntax
seq sequence-number {deny | permit} {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] [no-drop]
To delete a filter, use the no seq sequence-number command.
Parameters
sequence-
number
Enter a number as the filter sequence number. The range is from zero (0) to
65535.
deny Enter the keyword deny to drop any traffic matching this filter.
permit Enter the keyword permit to forward any traffic matching this filter.
any Enter the keyword any to filter all packets.
host mac-
address
Enter the keyword host and then enter a MAC address to filter packets with that
host address.
mac-source-
address
Enter a MAC address in nn:nn:nn:nn:nn:nn format.
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-source-
address-mask
Specify which bits in the MAC address must be matched.
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 be matched.
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.
Access Control Lists (ACL) 221