C
HAPTER
44
| IP Interface Commands
IPv4 Interface
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Console#
ping This command sends (IPv4) ICMP echo request packets to another node on
the network.
SYNTAX
ping host [count count] [size size]
host - IP address or IP alias of the host.
count - Number of packets to send. (Range: 1-16)
size - Number of bytes in a packet. (Range: 32-512)
The actual packet size will be eight bytes larger than the size
specified because the router adds header information.
DEFAULT SETTING
count: 5
size: 32 bytes
COMMAND MODE
Normal Exec, Privileged Exec
COMMAND USAGE
◆ Use the ping command to see if another site on the network can be
reached.
◆ The following are some results of the ping command:
■
Normal response - The normal response occurs in one to ten
seconds, depending on network traffic.
■
Destination does not respond - If the host does not respond, a
“timeout” appears in ten seconds.
■
Destination unreachable - The gateway for this destination indicates
that the destination is unreachable.
■
Network or host unreachable - The gateway found no corresponding
entry in the route table.
◆ When pinging a host name, be sure the DNS server has been enabled
(see page 1012). If necessary, local devices can also be specified in the
DNS static host table (see page 1014).
EXAMPLE
Console#ping 10.1.0.9
Type ESC to abort.
PING to 10.1.0.9, by 5 32-byte payload ICMP packets, timeout is 5 seconds
response time: 10 ms
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