Using Ping; Understanding Ping; Executing Ping - Cisco Catalyst 2950 Software Configuration Manual

Chapter 31 Troubleshooting

Using Ping

This section consists of this information:
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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:
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Executing Ping

If you attempt to ping a host in a different IP subnetwork, you must define a static route to the network.
Beginning in privileged EXEC mode, use this command to ping another device on the network from the
switch:
Command
ping [ip] {host | address}
Though other protocol keywords are available with the ping command, they are not supported in this
Note
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 31-1
78-11380-12
Understanding Ping, page 31-15
Executing Ping, page 31-15
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.
describes the possible ping character output.
Purpose
Ping a remote host through IP or by supplying the host name or
network address.
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
Diagnosing Connectivity Problems
31-15