Administrator Guide

Command Modes CONFIGURATION-EXTENDED-ACCESS-LIST
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.3.1.0 Add the DSCP value for ACL matching.
8.2.1.0 Allows ACL control of fragmented packets for IP (Layer 3) ACLs.
8.1.1.0 Introduced on the E-Series ExaScale.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.5.1.0 Expanded to include the optional QoS order priority for the ACL entry.
Usage Information
Use the order option only when you use policy-based QoS on the switch. For more information, refer to the
Quality of Service chapter of the C9000 Series Configuration Guide.
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 packets’ details.
Use the monitor option only when you are using flow-based monitoring. For more information, refer to the Port
Monitoring chapter of the
C9000 Series Configuration Guide.
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.
Related
Commands
deny tcp — assigns a filter to deny TCP packets.
deny udp — assigns a filter to deny UDP packets.
ip access-list extended — creates an extended ACL.
deny icmp
To drop all or specific internet control message protocol (ICMP) messages, configure a filter.
C9000 Series
Syntax
deny icmp {source–ip—address mask | any | host ip-address} {destination mask |
any | host ip-address} [log] [dscp] [[count [bytes]] [order] [monitor]
[fragments]
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 deny icmp {source–ip—address mask | any | host ip-address}
{destination mask | any | host ip-address} command.
Parameters
source-ip-address Enter the IP address of the network or host from which the packets were sent.
mask Enter a network mask in /prefix format (/x) or A.B.C.D. The mask, when specified in
A.B.C.D format, may be either contiguous or non-contiguous.
any Enter the keyword any to specify that all routes are subject to the filter.
Access Control Lists (ACL) 229