Lantronix UDS1100 User's Guide download pdf (Page 77)

A: Alternative Ways to Assign an IP Address

UDS1100 User Guide 77

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.

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Lantronix UDS1100 User's Guide Page 77