Glossary

This chapter provides definitions for IOLAN terms.

BOOTP (BOOTstrap An Internet protocol that enables a diskless workstation to discover its own IP address, the IP

Protocol)address of a BOOTP server on the network, and a file to be loaded into memory to boot the machine. This enables the workstation to boot without requiring a hard or floppy disk drive.

Callback

A security feature where the IOLAN calls back the User at a predetermined number defined in

 

the Users account.

CHAP (Challenge

Standard authentication protocol for PPP connections. It provides a higher level of security than

Handshake

PAP and should be used whenever possible. see PAP

Authentication

 

Protocol)

 

Community (SNMP)

An SNMP community is the group that devices and management stations running SNMP belong

 

to. It helps define where information is sent.

DHCP (Dynamic Host

A TCP/IP protocol that provides static and dynamic address allocation and management.

Configuration

 

Protocol)

 

Direct Connection

Connections that bypass the IOLAN enabling the user to log straight into a specific host. A

 

direct connection is recommended where a user logging in to the IOLAN is not required.

Ethernet

A high-speed (10Mbps,100Mbps) cable technology that connects devices to a LAN, using one

 

or more sets of communication protocols.

Fixed Callback

A method where there is a specific number defined to callback a user.

Local Authentication

Uses the user ID and password stored within the IOLAN User database.

LPD

Line Printer Daemon. A printer protocol that uses TCP/IP to establish connections between

 

printers and workstations on a network. The technology was developed originally for BSD

 

UNIX and has since become the de facto cross-platform printing protocol.

Modem Initialization

A series of commands sent to the modem by a communications program at start up. These

String

commands tell a modem how to set itself up in order to communicate easily with another

 

modem.

MOTD

Message of the day. This is defined by a file whose contents display when users log into the

 

IOLAN.

Multicast

The broadcasting of messages to a specified group of workstations on a LAN, WAN, or internet.

NAK (Negative

A communication control character sent by the receiving destination indicating that the last

Acknowledgment)

message was not received correctly.

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Perle Systems MDC, SDS manual Glossary

SDS, MDC specifications

Perle Systems is a leading provider of connectivity solutions, renowned for its robustness and reliability in networking hardware. Among its expansive product offerings, the MDC (Multiport Device Converter) and SDS (Serial Device Server) stand out as pivotal solutions for industries requiring seamless data communication and device management.

The Perle MDC serves as a powerful multi-port device converter, providing the ability to connect multiple serial devices to a computer network without needing a separate connection for each device. This is particularly useful in environments with limited computing resources or high device density, such as railways, manufacturing plants, or remote field operations. It is designed to convert serial communication, which is commonly used in legacy devices, into Ethernet/IP or TCP/IP protocols, ensuring that older devices can integrate into modern networks.

Main features of the MDC include its robust design for industrial environments, support for a variety of serial protocols, and multiple device connections. It supports data rates of up to 115200 bps and provides easy monitoring and configuration via a web-based interface. Additionally, the MDC incorporates advanced security features including SSL and SSH encryption, ensuring data integrity and protection against unauthorized access.

On the other hand, the Perle SDS model exemplifies advanced serial device hosting capabilities, allowing users to connect Ethernet networks to serial devices. It acts as a bridge, enabling remote devices to be configured and managed over IP networks. The SDS series is known for its versatility, supporting a range of serial communication protocols, including RS-232, RS-422, and RS-485, making it suitable for various applications such as point-of-sale systems, industrial automation, and remote monitoring.

The SDS boasts several characteristics that enhance its functionality, such as automatic device discovery, real-time monitoring, and local or cloud-based management options. Its feature set also includes traffic management capabilities, allowing the optimization of device communication by controlling the flow of data, which is critical for applications requiring high reliability and low latency.

Both the MDC and SDS benefit from a strong emphasis on ease of deployment and management. They support a range of network topologies, facilitating seamless integration into existing infrastructures. Furthermore, these devices are backed by Perle Systems' reputation for customer support and a commitment to ongoing innovation, ensuring that organizations can rely on these solutions for future growth and technological advancement.