Cisco Systems 3560 사용자 설명서

Destination unreachable—If the default gateway cannot reach the specified network, a 
destination-unreachable message is returned.

Network or host unreachable—If there is no entry in the route table for the host or network, a 
network or host unreachable message is returned.

If you attempt to ping a host in a different IP subnetwork, you must define a static route to the network 
or have IP routing configured to route between those subnets. For more information, see 

IP routing is disabled by default on all switches. If you need to enable or configure IP routing, see 

Beginning in privileged EXEC mode, use this command to ping another device on the network from the 
switch:

Though other protocol keywords are available with the ping command, they are not supported in this 
release.

This example shows how to ping an IP host:

Switch# ping 172.20.52.3

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echoes to 172.20.52.3, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms

Switch#

 describes the possible ping character output.

ping ip host | address

Ping a remote host through IP or by supplying the hostname or 
network address.

!

Each exclamation point means receipt of a reply.

.

Each period means the network server timed out while waiting for a reply.

U

A destination unreachable error PDU was received.

C

A congestion experienced packet was received.

I

User interrupted test.

?

Unknown packet type.

&

Packet lifetime exceeded.