Users Guide

standard or extended access-lists. This mechanism copies all incoming or outgoing packets on 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 — Congures a lter to drop packets.
permit — Congures a lter to forward packets.
deny tcp (for Extended IP ACLs)
Congure a lter that drops transmission control protocol (TCP) packets meeting the lter criteria.
Syntax
deny tcp {source mask | any | host ip-address} [bit] [operator port [port]]
{destination mask | any | host ip-address} [dscp] [bit] [operator port
[port]] [count [byte]] [order] [fragments] [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 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 trac
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 ve minutes. By default, ow-based monitoring is
not enabled.
Command Modes CONFIGURATION-EXTENDED-ACCESS-LIST
Command History
Version Description
9.7(0.0) Introduced on the S6000–ON.
9.4(0.0) Added the support for ow-based monitoring on the S4810, S4820T, S6000, and
Z9000 platforms.
9.3(0.0) Added the support for logging of ACLs on the S4810, S4820T, and Z9000
platforms.
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Access Control Lists (ACL)