Users Guide
Version Description
6.1.1.0 Introduced on the E-Series.
Usage
Information
When you use the log option, the CP processor logs detail 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
packet details.
By default, 10 ACL logs are generated if you do not specify the threshold explicitly. The default frequency
at which ACL logs are generated is five minutes. By default, flow-based monitoring is not enabled.
Use the monitor option only when you are using flow-based monitoring. For more information, refer to
the Port Monitoring chapter in the C9000 Series Configuration Guide.
NOTE: When ACL logging and byte counters are configured simultaneously, byte counters may
display an incorrect value. Configure packet counters with logging instead.
Related
Commands
deny — configures a MAC ACL filter to drop packets.
seq —configure a MAC ACL filter with a specified sequence number.
seq
To a deny or permit filter in a MAC access list while creating the filter, assign a sequence number.
C9000 Series
Syntax
seq sequence-number {deny | permit} {any | mac-source-address [mac-source-
address-mask]} [count [byte]] [log [interval minutes] [threshold-in-msgs
[count]] [monitor]
To remove this filter, use the no seq sequence-number command.
Parameters
sequence-
number
Enter a number from 0 to 65535.
deny Enter the keyword deny to configure a filter to drop packets meeting this
condition.
permit Enter the keyword permit to configure a filter to forward packets meeting this
criteria.
any Enter the keyword any to filter all packets.
mac-source-
address
Enter a MAC address in nn:nn:nn:nn:nn:nn format.
mac-source-
address-mask
(OPTIONAL) Specify which bits in the MAC address must match. If no mask is
specified, a mask of 00:00:00:00:00:00 is applied (in other words, the filter allows
only MAC addresses that match).
count (OPTIONAL) Enter the keyword count to count packets the filter processes.
byte (OPTIONAL) Enter the keyword byte to count bytes the filter processes.
log (OPTIONAL) Enter the keyword log to include ACL messages in the log.
threshold-in
msgs
count
(OPTIONAL) Enter the threshold-in-msgs keyword followed by a value to
indicate the maximum number of ACL logs that can be generated, exceeding which
the generation of ACL logs is terminated with the seq, permit, or deny
commands. The threshold range is from 1 to 100.
interval
minutes
(OPTIONAL) Enter the keyword interval followed by the time period in minutes
at which ACL logs must be generated. The threshold range is from 1 to 10 minutes.
260 Access Control Lists (ACL)