Destination Host Unreachable
User receives a "Destination host unreachable" message on sending a ping request.
This issue typically indicates that the host is down or otherwise not returning ICMP echo requests. It is also possible that an intermediate network hop is dropping the packets.
Investigate whether an intermediate hop is not returning pings by using the
traceroute command. Check the intermediate hop, and then the endpoint. If the destination is another Aruba switch, it is possible that Ingress ACLs on that switch are blocking ping packets. In such cases, the configuration option on the destination switch should be examined.