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IOLAN SDS Rack Serial to Ethernet Device Servers

iolan sds16 lg
  • 8 or 16 software selectable RS232/422/485 serial port interfaces
  • 10/100/1000 Ethernet
  • Advanced security features for data encryption, user authentication and event management

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The IOLAN SDS Device Server (also used as a Terminal Server
or Console Server) is the most advanced product for serial
to Ethernet applications available.

Delivering the highest performance in a 1U form factor,
an IOLAN SDS offers robust security, flexibility and next
generation IP (IPv6) technology, ideal for applications that
require remote serial device communication, data capture
or monitoring. Available in 8 and 16 port sizes, the IOLAN
SDS series has the right fit for your serial application

Features and Benefits – SDS Serial Device Server

  • TrueSerial® delivers the most authentic serial connections across Ethernet
  • Universal, software selectable RS-232/422/485 (EIA-232/422/485)
    serial ports with RJ45 interface prevents mechanical
    tampering in the field
  • 400Mhz, 750 MIPS, 32 bit processor* with integrated hardware
    encryption for the best performance on the market
  • FIPS 140-2 – Cryptographic modules meet US Government NIST compliancy
  • 1U rack form factor with
    flexible front, rear or DIN Rail mounting
  • Indicators for network and serial interfaces for easy
  • Plug & Play installation utility eliminates configuration
    hassles for all IOLAN’s on your IP network
  • Secure AES(256/192/128), 3DES, Blowfish, CAST128, ARCFOUR
    or ARCTWO data encryption across the LAN via SSH and SSL
  • Advanced user authentication via RADIUS, TACACS+, LDAP,
    Kerberos, NIS and RSA prevent unauthorized access
  • Advanced event management using Port buffering, Syslog,
    SNMP V3 and email event notification
  • Advance management capabilities via a Windows Device
    Manager, HTTP, HTTPS/SSL/TLS, SSH and Telnet
  • TruePort software provides true remote serial ports over
    an Ethernet LAN
  • Share a serial port with multiple TCP or UDP servers
  • ModBus Gateway
  • Power over serial cable eliminates costs of a separate
    power installation
  • Next Generation IP support ( IPv6 ) for investment protection
    and network compatibility
  • Routing protocols including PPP, SLIP/CSLIP, CIDR RIPV2,
  • 15 Kv ESD provides protection against electrostatic discharge
    and power surges
  • Protective solid steel enclosure
  • Java-free browser access to remote serial console ports via Telnet and SSH
  • Ping watchdog probes enable customers to power cycle equipment with attached Perle RPS power switches in the event of an unresponsive networking gear

Secure Serial to Ethernet Connectivity

The IOLAN SDS Device Server enables administrators to securely
access remote serial console ports on equipment such as PBX,
servers, routers, network storage equipment and security
appliances through an IP network. Sensitive data such as
credit card holder information is protected through standard
encryption tools such as Secure Shell (SSH) and Secure Sockets
Layer (SSL). Access by authorized users is assured via authentication
schemes such as RADIUS, TACACS+, LDAP, Kerberos, NIS and
RSA Security’s SecurID tokens.

By using encryption technologies, an IOLAN serial device
server protects sensitive and confidential data from a serial
device such as a credit card reader before being sent across
a corporate Intranet or public Internet. For compatibility
with peer encryption devices, all of the major encryption
ciphers such as AES, 3DES, RC4, RC2 and CAST128 are fully

Recognized as the most secure method for communicating to
remote private networks over the Internet, the IPSec standard
provides robust authentication and encryption of IP packets
at the network layer of the OSI model. As a standard it is
ideal for multi-vendor interoperation within a network, providing
flexibility and the ability to match the right solution for
a particular application.

IOLAN Plug-ins

Backed with the experience of connecting
hundreds of thousands of different devices to Ethernet
over the years, using a Perle Device Server you can rest
assured that virtually any device with a serial COM port
will operate in conjunction with your desired application
exactly as it did when you had it directly connected.  If
the unlikely event occurs that the Perle Device Server
does not enable this out of the box, Perle will make
it work

IOLAN Device Servers utilize customer installable “Device
Plug-ins” to successfully network devices where other
solutions have failed.

Perle provides new “Device Plug-ins” for its customers
every day.  If you have a device that you are struggling
attach to your network, contact Perle immediately.  In
the rare event that our out-of-box solutions do not meet
your unique requirements, we will match you up with an
existing Device Plug-in, or tailor one for you.

a free engineering consultation now

Device Plug-in Features

  • Perle maintains a growing library of Device
    Plug-ins or we can quickly tailor one for you – all at
    no charge**
  • Customer installable Device Plug-ins are simple to download into a Perle IOLAN Device Server
  • Device Plug-ins are designed to match
    your specific device for complete compatibility
  • Device Plug-ins are fully supported on
    the firmware release under which they are delivered

Advanced IP Technology

With support for Next Generation IP (IPv6) the IOLAN
range provides organizations with investment protection to
meet this rapidly growing standard.

Demand for IPv6, which
is compatible with IPv4 addressing schemes, is driven by
the need for more IP address. With the implementation and
rollout of advanced cellular networks, a robust method is needed
to handle the huge influx of new IP addressable devices on
the Internet. In fact, the US Department of Defense has mandated that all equipment purchased be IPv6 compatible. In addition, all major Operating Systems such as Windows, Linux, Unix and Solaris,
as well as routers, have built-in support for IPv6.

It is therefore important for end users and integrators
to select networking equipment that incorporates the IPv6
standard. The IOLAN line with support for IPv6 already built
in, is the best choice in serial to Ethernet technology.

Flexible and Reliable Serial Connections

An IOLAN SDS is capable of pseudo connections to servers
via Telnet, Rlogin, UDP or TCP socket based applications
to remote devices. Where a server’s application needs
to access a fixed TTY or COM ports, Perle’s TruePort software supplied with each device server performs COM port
redirection across IP networks to remote Perle device servers
either in encrypted or clear text modes.

Centralized control and management of multiple deployments
is maintained through Perle’s Device Manager software
resulting in maximum uptime for your remote equipment.

Protection against electrostatic discharges and power surges
is provided on all IOLAN SDS models with its robust 15Kv
ESD protection circuitry enabling organizations to utilize
this solution in the field with confidence.

Lifetime Warranty

Perle IOLAN SDS secure device
servers are backed by the best service and support in the
industry including Perle’s
unique lifetime warranty. Since 1976 Perle has been providing
its customers with networking products that have the highest
levels of performance, flexibility and quality.

Click diagram for larger picture

IOLAN SDS Rack Serial to Ethernet Diagram


Serial Port Access
Connect directly using Telnet / SSH by port and IP address
Connect with EasyPort menu by Telnet / SSH
Use an internet browser to access with HTTP or secure HTTPS via EasyPort Web menu
Java-free browser access to remote serial console ports via Telnet and SSH
Ports can be assigned a specific IP address ( aliasing )
Multisession capability enables multiple users to access ports simultaneously *
Multihost access enables multiple hosts/servers to share serial ports
In-band ( Ethernet ) and out-of-band ( dial-up modem ) support
Dynamic DNS enables users to find a console server from anywhere on the Internet
Domain name control through DHCP option 81
IPV6 and IPV4 addressing support
Primary/Backup host functionality enables automatic connections to alternate host(s)
SSH v1 and v2
PCI DSS Compliance: TLS v1.2, TLS v1.1, TLS v1.0, SSL v3.0, SSL v2.0
SSL Server and SSL client mode capability
SSL Peer authentication
IPSec VPN : NAT Traversal, ESP authentication protocol
SSH ciphers: AES-CTR, AES-GCM and ChaCha20-poly1305
SSL encryption: AES-GCM, key exchange ECDH-ECDSA, HMAC SHA256, SHA384
Encryption: AES (256/192/128), 3DES, DES, Blowfish, CAST128, ARCFOUR(RC4), ARCTWO(RC2)
Hashing Algorithms: MD5, SHA-1, RIPEMD160, SHA1-96, and MD5-96
Key exchange: RSA, EDH-RSA, EDH-DSS, ADH
X.509 Certificate verification: RSA, DSA
Certificate authority (CA) list
Local database
RADIUS Authentication, Authorization and Accounting
TACACS+ Authentication, Authorization and Accounting
LDAP, NIS, Kerberos Authentication
RSA SecureID-agent or via RADIUS Authentication
SNMP v3 Authentication and Encryption support
IP Address filtering
Disable unused daemons
Active Directory via LDAP
Terminal Server
SSH v1 and v2
Auto session login
LPD, RCP printer
MOTD – Message of the day
Serial machine to Ethernet
Tunnel raw serial data across Ethernet – clear or encrypted
Raw serial data over TCP/IP
Raw serial data over UDP
Serial data control of packetized data
serial ports with multiple hosts/servers
Virtual modem simulates a modem connection – assign IP address by AT
phone number
Virtual modem data can be sent over the Ethernet link with or without
SSL encryption
TruePort com/tty redirector for serial based applications on Windows, Linux, Solaris, SCO, HP UX, NCR UNIX and AIX. For a complete list of all the latest drivers click here
TrueSerial packet technology
provides the most authentic serial connections across Ethernet ensuring
serial protocol integrity
RFC 2217 standard for transport of serial data and RS232 control signals
Customizable or fixed serial baud rates
Plug-ins allow customer or Perle provided plug-ins for special applications
Software Development Kit ( SDK ) available
Serial encapsulation of industrial protocols such as ModBus, DNP3 and IEC-870-5-101
ModBus TCP gateway enables serial Modbus ASCII/RTU device connection to ModBus TCP
Data logging will store serial data received when no active TCP session and forward to network peer once session re-established – 32K bytes circular per port
Console Management
Sun / Oracle Solaris Break Safe
Local port buffer viewing – 256K bytes per port
External port buffering via NFS, encrypted NFS and Syslog
Event notification
Manage AC power of external equipment using Perle RPS power management products
– central console server enables access ports across multiple console
Windows Server 2003/2008
EMS – SAC support GUI access to text-based Special Administrative Console
Ping watchdog probes enable customers to power cycle equipment with attached Perle RPS power switches in the event of an unresponsive networking gear
Remote Access
Dial, direct serial PPP, PAP/CHAP, SLIP
  HTTP tunneling enables firewall-safe access to remote serial devices across the internet
Automatic DNS Update Utilize DHCP Opt 81 to set IOLAN domain name for easy name management and with Dynamic DNS support , users on the Internet can access the device server by name without having to know its IP address. See Automatic DNS update support for details
IPSEC VPN client/servers Microsoft L2TP/IPSEC VPN client ( native to Windows XP)
Microsoft IPSEC VPN Client ( native to Windows Vista )
Cisco routers with IPSEC VPN feature set
Perle IOLAN SDS/STS and SCS models
OA&M ( Operations, Administration and Management )
SNMP V3 – read and write, Perle MIB
Perle Device Manager – Windows based utility for large scale deployments
Configurable default configuration
Installation Wizard
Set a Personalized Factory Default for your IOLANs

* Available on 2 and 4 port models

Hardware Specs

Processor MPC8349E, 400 Mhz, 750 MIPS
RAM MB 64 64
Flash MB 16 16
Interface Ports
Number of Serial Ports 8 16
Serial port interface Software selectable RS232 / RS485 / RS422 DTE on RJ45
Sun / Solaris Sun / Oracle ‘Solaris’ Safe – no “break signal” sent during
power cycle causing costly server re-boots or downtime
Serial port speeds 50bps to 230Kbps with customizable baud rate support
Data bits 5,6,7,8, 9-bit protocol support
Parity Odd, Even, Mark, Space, None
Flow Control Hardware, Software, Both, None
Serial port protection 15Kv Electrostatic Discharge Protection (ESD)
Local console port RS232 on RJ45 with DB9 adapter (provided)
Network 10/100/1000-base TX Ethernet RJ45
Software selectable Ethernet speed 10/100/1000, Auto
Software selectable Half/Full/Auto duplex
Ethernet Isolation 1.5Kv Magnetic Isolation
Power Supply USA models – IEC320-C13 to NEMA 5-15P line cord
UK models – IEC320-C13 to BS1363 line cord
EU models – IEC320-C13 to CEE 7/7 Schuko
South Africa Models – IEC320-C13 to BS546 line cord
Australia models – IEC320-C13 to AS3112 line cord
Nominal Input Voltage 110/230v AC
Input Voltage Range 100-240v AC
AC Input Frequency 47-63Hz
Current Consumption @ 100v ( Amps ) 0.12 0.13
Current Consumption @ 240v ( Amps ) 0.06 0.06
Typical Power Consumption (Watts) 12 13
Power Line Protection Fast transients: 1 KV (EN61000-4-4 Criteria B)
Surge: 2KV ( EN61000-4-5 common mode),
1KV ( EN61000-4-5 differential and common modes)
LEDs Power
System Ready
Network Link activity
Serial: Transmit and Receive data per port
Environmental Specifications
Heat Output ( BTU/HR ) 42 45
MTBF( hours )* 140,740 110,300
Operating Temperature 0C to 55C, 32F to 131F
Storage Temperature -40C to 85C, -40F to 185F
Humidity 5 to 95% (non condensing) for both storage and operation.
Case SECC Zinc plated sheet metal (1 mm)
Ingress Protection rating IP30
Mounting 1U – 19″ rack, front and rear mounting hardware included
Product Weight and Dimensions
Weight 3 kg 3.1 kg
Dimensions 1U Rack form factor – 26.4 x 43.4 x 4.4 (cm), 10.38 x 17.1 x 1.75 (in)
Shipping Dimensions 59 x 36 x 9cm
Shipping Weight 3.98 kg 4.0 kg
Regulatory Approvals
Emissions FCC Part 15, Subpart B, Class A
CFR47:2003, Chapter 1, Part 15 Subpart B,(USA) Class A
ICES-003, Issue 4, February 2004 (Canada)
CISPR 32:2015/EN 55032:2015 (Class A)
EN61000-3-2 : 2010, Limits for Harmonic Current Emissions
EN61000-3-3 : 2010, Limits of Voltage Fluctuations and Flicker
Immunity CISPR 24:2010/EN 55024:2010
EN61000-4-2: Electrostatic Discharge
EN61000-4-3: RF Electromagnetic Field Modulated
EN61000-4-4: Fast Transients
EN61000-4-5: Surge
EN61000-4-6: RF Continuous Conducted
EN61000-4-8: Power-Frequency Magnetic Field
EN61000-4-11: Voltage Dips and Voltage Interruptions
Safety IEC 60950-1(ed 2); am1, am2 and
EN 60950-1:2006+A11:2009+A1:2010+A12:2011+A2:2013
CAN/CSA-C22.2 No. 60950-1-03 and ANSI/UL 60950-1,
First Edition April 1st 2003 (Recognized Component)
Other Reach, RoHS and WEEE Compliant
Directive 2011/65/EU restriction of the use of certain hazardous substances in electrical and electronic equipment and meets the following standard:: EN 50581:2012
CCATS – G168387
ECCN – 5A992
HTSUS Number: 8471.80.1000
Perle Limited Lifetime Warranty



RJ45 Socket

IOLAN RJ45 Socket Direction RS232 RS485 Full Duplex RS485 Half Duplex RS422
1 left arrow DCD      
2 right arrow RTS TxD+ DATA+ TxD+
3 left arrow DSR  
4 right arrow TXD TxD- DATA- TxD-
5 left arrow RXD RxD+ RxD+
7 left arrow CTS RxD- RxD-
8 right arrow DTR

Optional Perle adapters for use with straight thru CAT5 cabling

*Calculation model based on MIL-HDBK-217-FN2 @ 30 °C

Application Diagrams


Using RAW TCP Sockets

A raw TCP socket connection which can be initiated from the serial-Ethernet device or from the remote host/server. This can either be on a point to point or shared basis where a serial device can be shared amongst multiple devices. TCP sessions can be initiated either from the TCP server application or from thePerle IOLAN serial-Ethernet adapter.


Using Raw UDP Sockets

For use with UDP based applications, Perle IOLANs can convert serial equipment data for transport across UDP packets either on a point to point basis or shared across multiple devices.

Console Server

Console Management

For access to remote console ports on routers, switches,etc, Perle IOLAN’s enable administrators secure access to these RS232 ports via inband Reverse Telnet / SSH or out of band with dial-up modems. Perle IOLAN models with integrated modems are available.

diagram console

Connect Serial-based Applications with a COM/TTY Port Driver

Serial ports can be connected to network servers or workstations running Perle’s TruePort software operating as a virtual COM port. Sessions can be initiated either from the Perle IOLAN or from TruePort.

diagram com tty

Serial Tunneling between two Serial Devices

Serial Tunneling enables you to establish a link across Ethernet to a serial port on another IOLAN. Both IOLAN serial ports must be configured for Serial Tunneling (typically one serial port is configured as a Tunnel Server and the other serial port as a Tunnel Client).

diagram tunneling
Virtual Modem

Virtual Modem

Enables the serial-Ethernet adapter to simulate a modem connection. When connected to the IOLAN and initiates a modem connection, the IOLAN starts up a TCP connection to another IOLAN serial-Ethernet adapter configured with a Virtual Modem serial port or to a host running a TCP application.

diagram modem

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