Use this command to re-enable the Internet Control Message Protocol (ICMP), allowing a router to reply to IP ping requests.
| echo-reply | Enables ICMP in echo-reply mode. |
| mask-reply | Enables ICMP in mask-reply mode. |
| unreachable | Enables ICMP in unreachable mode. |
None.
Interface configuration.
By default, ICMP messaging is enabled on a routing interface for both echo-reply and mask-reply modes. If, for security reasons, ICMP has been disabled using no ip icmp, this command will re-enable it on the routing interface.
The “no” form of this command disables ICMP.
This example shows how to enable ICMP in echo-reply mode on VLAN 1:
System(rw-config)->interface vlan 1 System(rw-config-intf-vlan.0.1)->ip icmp echo-reply
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