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Cisco Systems IntelligentGigabit Ethernet Switch Modules for the IBMBladeCenter, Software Configuration Guide
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Chapter25 Troubleshooting
Diagnosing Connectivity Problems
Using PingThis section consists of this information:
•Understanding Ping, page 25-8
•Executing Ping, page 25-8
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-answe r 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
If you attempt to ping a host in a different IP subnetwork, you must d efine a static route to the network.
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 supp orted 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#
Command Purpose
ping [ip] {host | address} Ping a remote host through IP or by supplying the host name or
network address.