Administrator Guide

Version Description
9.0.2.0 Introduced on the S6000.
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.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
7.4.1.0 Added support for the noncontiguous mask and added the monitor option.
6.5.1.0 Expanded to include the optional QoS order priority for the ACL entry.
Usage Information
The order option is relevant in the context of the Policy QoS feature only. For more information, see the Quality
of Service section in the Dell EMC Networking OS 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.
The monitor option is relevant in the context of flow-based monitoring only. For more information, see Port
Monitoring.
The C-Series and S-Series cannot count both packets and bytes, when you enter the count byte options, only
bytes are incremented.
NOTE: When you configure ACL logging and byte counters simultaneously, byte counters may
display an incorrect value. Configure packet counters with logging instead.
Related
Commands
• deny tcp — assign a filter to deny TCP packets.
• deny udp — assign a filter to deny UDP packets.
• ip access-list extended — create an extended ACL.
deny icmp
To drop all or specific internet control message protocol (ICMP) messages, configure a filter.
Syntax
deny icmp {source mask | any | host ip-address} {destination mask | any | host
ip-address} [ttl operator] [dscp] [count [byte] [order] [fragments] [monitor]
[no-drop]
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 mask | any | host ip-address} {destination mask |
any | host ip-address} command.
Parameters
source 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.
host ip-address Enter the keyword host then the IP address to specify a host IP address.
destination Enter the IP address of the network or host to which the packets are sent.
ttl Enter the keyword ttl to deny a packet based on the time to live value. The range is
from 1 to 255.
200 Access Control Lists (ACL)