Users Guide

Table Of Contents
By default, the interval is set to 5 minutes and logs are created every 5 minutes. During this interval, the system continues to examine the
packets against the congured ACL rule and permits or denies trac, but logging is halted temporarily. This value is congurable and the
range is from 1 to 10 minutes.
For example, if you have congured a threshold value of 20 and an interval of 10 minutes, after an initial packet match, the 20th packet that
matches the ACL entry is logged. The system then waits for the interval period of 10 minutes to elapse, during which time no logging
occurs. Once the interval period elapses, the 20th packet that matches the ACL entry is logged again.
Important notes
The ACL logging feature is:
Applicable only for IPv4 and IPv6 user ACLs. MAC ACLs are not logged.
Applicable only for user ACLs applied on interfaces in the inbound direction. Even though ACL logging cannot be enabled for outbound
ACLs, ACL conguration is applied.
If you have enabled ACL logging, downgrade from release 10.4.3.0 to a previous release fails and the corresponding ACL rules are not
applied. Before you downgrade, be sure to disable ACL logging or delete the startup conguration.
Dell EMC recommends that you do not enable logging for control plane protocol identical user ACL entry.
DELL EMC recommends a max scale of 128 log-enabled ACL entries. If logging cannot be enabled on further ACL entries, a syslog error
message appears to indicate logging cannot be enabled. However, the ACL entries are applied.
ACL commands
clear ip access-list counters
Clears ACL counters for a specic access-list.
Syntax
clear ip access-list counters [access-list-name]
Parameters access-list-name — (Optional) Enter the name of the IP access-list to clear counters. A maximum of 140
characters.
Default Not congured
Command Mode EXEC
Usage Information If you do not enter an access-list name, all IPv6 access-list counters clear. The counter counts the number of
packets that match each permit or deny statement in an access-list. To get a more recent count of packets
matching an access list, clear the counters to start at zero. To view access-list information, use the show
access-lists command.
Example
OS10# clear ip access-list counters
Supported Releases 10.2.0E or later
1050 Access Control Lists