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For a complete listing of all commands related to ICMP, refer to the Dell Networking OS Command Line
Reference Guide.
Enabling ICMP Unreachable Messages
By default, ICMP unreachable messages are disabled.
When enabled, ICMP unreachable messages are created and sent out all interfaces.
To disable and re-enable ICMP unreachable messages, use the following commands.
•
To disable ICMP unreachable messages.
INTERFACE mode
no ip unreachable
•
Set the system to create and send ICMP unreachable messages on the interface.
INTERFACE mode
ip unreachable
To view if ICMP unreachable messages are sent on the interface, use the show config command in
INTERFACE mode. If it is not listed in the show config command output, it is enabled. Only non-default
information is displayed in the show config command output.
IPv4 Routing
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Troubleshooting
