Administrator Guide
permit icmp
Configure a filter to allow all or specific ICMP messages.
C9000 Series
Syntax
permit icmp {source mask | any | host ip-address} {destination mask | any |
host ip-address} [dscp] [count [bytes]] [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 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 noncontiguous.
any Enter the keyword any to match and drop specific Ethernet traffic on the interface.
host
ip-address
Enter the keyword host and then enter 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.
dscp Enter the keyword dscp to deny a packet based on the DSCP value. The range is 0 to
63.
count (OPTIONAL) Enter the keyword count to count packets the filter processes.
bytes (OPTIONAL) Enter the keyword byte to count bytes the filter processes.
order (OPTIONAL) Enter the keyword order to specify the QoS priority for the ACL entry.
The range is 0 to 254 (where 0 is the highest priority and 254 is the lowest; lower-order
numbers have a higher priority). If you do not use the keyword order, the ACLs have the
lowest order by default (255).
fragments Enter the keyword fragments to use ACLs to control packet fragments.
log (OPTIONAL) Enter the keyword log to include ACL messages in the log.
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 threshold 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. For more information, refer to the “Flow-based Monitoring” section
in the Port Monitoring chapter of the Dell Networking OS Configuration Guide.
Defaults Not configured.
Command Modes CONFIGURATION-STANDARD-ACCESS-LIST
Command History
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.
234 Access Control Lists (ACL)