3 EtherNet/IP
3.1 System description
XI/ON: XNE-GWBR-2ETH-IP
09/2011 MN05002007Z-EN
www.eaton.com
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3.1.7
ARP (Address Resolution Protocol)
In each TCP/IP-capable computer, ARP serves to clearly assign the worldwide unique hard-
ware addresses (MAC-IDs) to the single IP addresses of the network nodes via internal tables.
Using ARP in the DOS-prompt, every node in a network can be clearly identified via its MAC-
ID.
• Write a ping command for the respective station/ IP address: (example: "x:\\ping
192.168.1.100").
• Via the command "x:\\arp -a", the MAC-ID for this IP address is determined. This MAC-ID
clearly identifies the network node.
Figure 17:
Determination
of the MAC-ID
of a XI/ON mod-
ule via ARP