2: Introduction

IP Address

Every device connected to an IP network must have a unique IP address. This address is used to reference the specific unit. The xPico is automatically assigned an IP address on DHCP-enabled networks, as it is DHCP-enabled by default.

Port Numbers

Every TCP connection and every UDP datagram is defined by a destination IP address and a port number. For example, a Telnet application commonly uses port number 23. A port number is similar to an extension on a phone system.

The unit's serial channel (port) can be associated with a specific TCP/UDP port number. Port number 9999 is reserved for access to the unit's Setup (configuration) Mode window. Ports 0-1024 are reserved as well. For more information on reserved port numbers, see to Table 7-4. Reserved Port Numbers on page 42.

Product Information Label

The product information label on the unit contains the following information about the specific unit:

Part Number

Revision

Manufacturing Date Code

Product Model

Country of Origin

Lantronix Datamatrix Barcode

MAC Address

Figure 2-1. Product Label

Part Number Revision

Manufacturing

Date Code

Product Model Country of Origin

MAC Address

Lantronix

Datamatrix

Barcode

xPico User Guide

13

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Lantronix 900-618 manual Product Information Label, IP Address, Port Numbers