C
HAPTER
40
| IP Interface Commands
IPv4 Interface
– 967 –
EXAMPLE
Console#traceroute 192.168.0.1
Press "ESC" to abort.
Traceroute to 192.168.0.1, 30 hops max, timeout is 3 seconds
Hop Packet 1 Packet 2 Packet 3 IP Address
--- -------- -------- -------- ---------------
1 20 ms <10 ms <10 ms 192.168.0.1
Trace completed.
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 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 specified
(page 949) and host name-to-address translation enabled (page 946).