one port and forwards (mirrors) them to another port. The source port is the 
monitored port (MD) and the destination port is the monitoring port (MG).
Related 
Commands
deny — configures a filter to drop packets.
permit — configures a filter to forward packets.
permit tcp (for Extended IP ACLs)
To pass TCP packets meeting the filter criteria, configure a filter.
Syntax
permit tcp {source mask | any | host ip-address} [bit] 
[operator port [port]] {destination mask | any | host ip-
address} [bit] [dscp] [operator port [port]] [count [byte]] 
[order] [fragments] [log [interval minutes] [threshold-in-msgs 
[count]] [monitor]
To remove this filter, you have two choices:
• Use the no seq sequence-number command if you know the filter’s 
sequence number.
• Use the no permit tcp {source mask | any | host ip-address} 
{
destination mask | any | host ip-address} command.
Parameters
log (OPTIONAL) Enter the keyword log to enable the triggering 
of ACL log messages.
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 interval range is from 1 to 10 minutes.
monitor (OPTIONAL) Enter the keyword monitor when the rule is 
describing the traffic that you want to monitor and the ACL 
in which you are creating the rule is applied to the monitored 
interface.
Defaults 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.
Command 
Modes
CONFIGURATION-EXTENDED-ACCESS-LIST
328
Access Control Lists (ACL)