Specifications

194 Chapter 8. Command Reference

PING

This command sends an echo message, available within the TCP/IP protocol suite. The echo message is sent to a

remote node and returned in order to test connectivity to the remote node. It is particularly useful for locating

connection problems on a network.

A status message is issued for each echo message sent.

You cannot ping your own LAN address; you can ping your own WAN address.

To fit the echo message into one ATM cell in routing mode, set the length of user data down to 0 bytes (-s 0 or -l

0).

Note: To terminate the ping before it ends, press control-c.

-c count Number of packets sent (from 1 to 2000000000). The default is 5 packets.

-i wait Wait period between packets in seconds (from 1 to 10). The default is 1 second.

-s size Packet data length in bytes (from 0 to 1648). The default is 56 bytes.

-l size Same as -s size.

-I srcaddr Source IP address contained in the echo message (4 decimals separated by periods). Use this

option to force packets into a tunnel or to force use of the management address as the source

address.

ipaddr IP address (4 decimals separated by periods).

Examples:

The followng command requests 2 echo messages sent 7 seconds apart with a packet length of 34 bytes. The

messages are sent to IP address 192.168.254.2.

# ping -c 2 -i 7 -s 34 192.168.254.2

ping: reply from 192.168.254.2: bytes=34 (data), time<5 ms

ping: packets sent 2, packets received 2

The following command sends packets with the source IP address 192.168.254.254 to the IP address

192.4.210.122. Default values are used for the other options.

ping -I 192.168.254.254 192.4.210.122

The following command uses management address 192.168.1.2 as the source address when pinging destination

address 192.168.100.100.

ping -I 192.168.1.2 192.168.100.100

Example:

mlp summary

ping [-c count] [-i wait] [- s size (or -l size)] [-I srceaddr] <ipaddr>