User manual

Configuration 3-10

Setting the IP Address Using Address Resolution Protocol (ARP)

The module’s IP address can be changed using the ARP command from a PC. The

new IP address will be stored in non-volatile memory. ARP requires the module’s

Ethernet MAC Address that is printed on a label on the back of the module.

Note: ARP cannot be used to change the subnet mask and gateway address of the

BridgeWay. These can be configured using the BridgeWay’s Settings web page.

Switch all 8 switches of the IP Configuration DIP switch to the ON position.

Note: The ARP/Ping capability is disabled unless all switches are ON.

On a PC connected to the BridgeWay on Ethernet bring up an MS DOS™ win-

dow and type:

arp -s <IP address> <MAC address>

The arp -s command will store the IP and MAC addresses in the PC’s ARP table.

Next type:

ping <IP address>

When the Ping command is executed, the PC sends this information to the module

using the MAC address. The module detects that it was addressed with the correct

MAC address and adopts the IP address sent by the PC.

Next type:

arp -d <IP address>

The arp -d will remove the static route from the PC’s ARP table.

Switch all 8 switches of the IP Configuration DIP switch to the OFF position to

disable the feature.

This method can be used to reconfigure a module that has been previously config-

ured, or even to reconfigure modules outside the host’s subnet.