Server User Manual
Table Of Contents
- SDS/SCS/STS/MDC User’s Guide
- Table of Contents
- Preface
- Introduction
- Hardware and Connectivity
- Configuration Methods
- Getting Started
- Using DeviceManager and WebManager
- Network Settings
- Configuring Serial Ports
- Introduction
- Serial Ports
- Serial Port Profiles
- Common Tabs
- Console Management Profile
- TruePort Profile
- TCP Sockets Profile
- UDP Sockets Profile
- Terminal Profile
- User Service Settings
- Printer Profile
- Serial Tunneling Profile
- Virtual Modem Profile
- Control Signal I/O Profile
- Modbus Gateway Profile
- Power Management Profile
- Remote Access (PPP) Profile
- Remote Access (SLIP) Profile
- Custom Application Profile
- Port Buffering
- Advanced
- Configuring Users
- Configuring Security
- Configuring I/O Interfaces
- Configuring Clustering
- Configuring the Option Card
- Configuring the System
- Controlling the RPS, I/O Channels, and IPsec Tunnels
- System Administration
- Introduction
- Managing Configuration Files
- Downloading IOLAN Firmware
- Calibrating I/O
- Setting the IOLAN’s Date and Time
- Rebooting the IOLAN
- Resetting the IOLAN to Factory Defaults
- Resetting the SecurID Node Secret
- Language Support
- Downloading Terminal Definitions
- Resetting Configuration Parameters
- Lost Admin Password
- Applications
- RADIUS and TACACS+
- SSL/TLS Ciphers
- Virtual Modem AT Commands
- Pinouts and Cabling Diagrams
- Setting Jumpers
- I/O Wiring Diagrams
- Utilities
- Accessories
- Troubleshooting
- Introduction
- Hardware Troubleshooting
- Communication Issues
- DeviceManager Problems
- Host Problems
- RADIUS Authentication Problems
- Login Problems
- Problems with Terminals
- Unknown IP Address
- DHCP/BOOTP Problems
- Callback Problems
- Language Problems
- Modem Problems
- PPP Problems
- Printing Problems
- Long Reboot Cycle
- SSL/TLS
- I/O Models
- IPv6 Issues
- Contacting Technical Support
- Glossary
- Index

Serial Port Profiles
162 IOLAN SDS/SCS/STS/MDC User’s Guide, Version 4.0
Serial Tunneling Profile
Overview
The Serial Tunneling profile allows two IOLANs to be connected back-to-back over the network to
establish a virtual link between two serial ports based on RFC 2217.
Functionality
The serial device that initiates the connection is the Tunnel Client and the destination is the Tunnel
Server
, although once the serial communication tunnel has been successfully established,
communication can go both ways.
A more detailed implementation of the Serial Tunneling profile is as follows:
IOLAN
perle
Network
Serial
perle
IOLAN
Serial
Client
Tunnel
Server
Tunnel
The Server Tunnel will also support Telnet Com Port Control protocol as detailed in RFC 2217.
IOLAN
perle
Network
Serial
Server
Tunnel
Running
2217 Application
The IOLAN serial port signals will also follow the signals on the other serial port. If one serial port
receives DSR then it will raise DTR on the other serial port. If one serial port receives CTS then it
will raise RTS on the other serial port. The CD signal is ignored.










