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Pinging TCP/IP Ethernet Interfaces on the Network
2.3
PING (Packet InterNet Grouper) is the name of a program used on TCP/IP networks to test reachability of
destinations by sending them an ICMP echo request message and waiting for a reply. Most nodes on TCP/IP
networks, including the PACSystems Ethernet Interface, implement a PING command.
You should ping each installed Ethernet Interface. When the Ethernet Interface responds to the ping, it verifies
that the interface is operational and configured properly. Specifically it verifies that acceptable TCP/IP
configuration information has been downloaded to the Interface.
For configuration details, including setting an initial IP address, refer to Chapter 4.
Pinging the Ethernet Interface from a UNIX Host or Computer
Running TCP/IP Software
A ping command can be executed from a UNIX host or computer running TCP/IP (most TCP/IP communications
software provides a ping command) or from another Ethernet Interface. When using a computer or UNIX host,
you can refer to the documentation for the ping command, but in general all that is required is the IP address of
the remote host as a parameter to the ping command. For example, at the command prompt type:
ping 10.0.0.1
Determining if an IP Address is Already Being Used
Note:
This method does not guarantee that an IP address is not duplicated. It will not detect a device that is
configured with the same IP address if it is temporarily off the network.
It is very important not to duplicate IP addresses. To determine if another node on the network is using the same
IP address:
1.
Disconnect your Ethernet Interface from the LAN.
2.
Ping the disconnected Interface's IP address. If you get an answer to the ping, the chosen IP address is
already in use by another node. You must correct this situation by assigning a unique IP addresses.
GFK-2224Q
Chapter 2. Installation and Start-up: RX3i Embedded Interface
January 2017
19
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Troubleshooting
