Deployment Guide

drop icmp
Drops the ICMPv4 and ICMPv6 packets.
Syntax
drop {icmp | icmp6}
Command Modes CONFIGURATION
Command
History
This guide is platform-specific. For command information about other Platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.11.0.0 Introduced on the S4810, S4820T, S3048–ON, S3100 Series, S4048–ON, S5000,
S6000, S6000–ON, Z9500, Z9100–ON, S6100–ON, S6010–ON, S4048T–ON,
C9000, and MXL.
Usage
Information
When the drop icmp feature is configured, the system drops the ICMP reply messages on the front end
and management interfaces. By default, the Dell EMC Networking OS responds to all the ICMP messages.
NOTE: There is no separate CLI to enable IP ID randomness. By default, the IP ID in the kernel is
randomized.
For more information on the ICMP message types, see the ICMP Commands section.
System Security Commands
The following section lists the system security commands.
generate hash
Generate a hash checksum for the given file or the startup configuration using the MD5, SHA1, or SHA256 algorithm.
Syntax
generate hash {md5 | sha1 | sha256} {flash://filename | startup-config}
Parameters
md5 | sha1 |
sha256
Enter the keyword md5, sha1, or sha256 to generate .
flash:// filename Enter the keyword flash: and enter the filename to generate the hash checksum
for any file in the flash drive using the MD5, SHA1, or SHA256 algorithm.
startup-config Enter the keyword shartup-config to generate the hash checksum for the
startup configuration using the MD5, SHA1, or SHA256 algorithm.
Defaults None
Command Modes EXEC Privilege
Command
History
Version Description
9.14(1.0) Introduced on the S4810 and S4820T.
9.14(0.0) Introduced on the S5048F–ON.
9.13(0.0) Introduced on the S3100 series, S3048–ON, S4048–ON, S4048T-ON, S5000,
S6000, S6000–ON, S6010–ON, S6100–ON, Z9100–ON, Z9500, C9010, MXL, and
FN-IOM.
Usage
Information
Use the generate hash command to generate a hash checksum for your startup configuration, and
use the hash to verify using the verified boot hash command.
1432 Security