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Appendix D: Alternative Ways to Assign an IP Address
xDirect User Guide 78
BOOTP
Similar to DHCP, but for smaller networks. Automatically assigns the IP address for a specific
duration of time.
ARP and Telnet
If the unit has no IP address, you can use Address Resolution Protocol (ARP) method from UNIX
and Windows-based systems to assign a temporary IP address.
To assign a temporary IP address:
1. On a UNIX or Windows-based host, create an entry in the host's ARP table using the intended
IP address and the hardware address of the unit (on the product label on the bottom of the
unit).
arp -s 191.12.3.77 00:20:4a:xx:xx:xx (Unix)
arp -s 191.12.3.77 00-20-4a-xx-xx-xx (Windows)
Note: For the ARP command to work on Windows 95, the ARP table on the PC must
have at least one IP address defined other than its own.
2. If you are using Windows 95, type ARP -A at the DOS command prompt to verify that there is
at least one entry in the ARP table. If the local machine is the only entry, ping another IP
address on your network to build a new entry in the ARP table; the IP address must be a host
other than the machine on which you are working. Once there is at least one additional entry in
the ARP table, use the following command to ARP an IP address to the unit:
arp -s 191.12.3.77 00-20-4a-xx-xx-xx
3. Open a Telnet connection to port 1. The connection fails quickly, but the unit temporarily
changes its IP address to the one designated in this step.
telnet 191.12.3.77 1
4. Open a Telnet connection to port 9999, and press Enter within five seconds to go into Setup
Mode. If you wait longer than five seconds, the unit reboots.
telnet 191.12.3.77 9999
Note: The IP address you just set is temporary and reverts to the default value when the
unit’s power is reset, unless you configure the unit with a static IP address and store the
changes permanently.