39-9
Cisco IE 3000 Switch Software Configuration Guide
OL-13018-03
Chapter 39 Troubleshooting
Using Ping
Understanding Ping
The switch supports IP ping, which you can use to test connectivity to remote hosts. Ping sends an echo
request packet to an address and waits for a reply. Ping returns one of these responses:
•
Normal response—The normal response (
hostname
is alive) occurs in 1 to 10 seconds, depending
on network traffic.
•
Destination does not respond—If the host does not respond, a
no-answer
message is returned.
•
Unknown host—If the host does not exist, an
unknown host
message is returned.
•
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.
Executing Ping
Beginning in privileged EXEC mode, use this command to ping another device on the network from the
switch:
Note
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#
Table 39-1
describes the possible ping character output.
Command
Purpose
ping ip
host
|
address
Ping a remote host through IP or by supplying the hostname or
network address.
Table 39-1
Ping Output Display Characters
Character
Description
!
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.
