Ethernet is a trademark of XEROX Corporation. UNIX is a registered trademark of
The Open Group. Windows 95, Windows 98, Windows 2000, and Windows NT are
trademarks of Microsoft Corp. Netscape is a trademark of Netscape Communications
Corporation.
Contacts
Lantronix
167 Technology Drive
Irvine, CA 92618 USA
Toll Free: 800-526-8766
Phone: 949-453-3990
Fax: 949-450-7249
Technical Support
Online:
Sales Offices
For a current list of our domestic and international sales offices, go to the Lantronix
Web site at
Operation of this equipment in a residential area is likely to cause interference in
which case the user, at his or her own expense, will be required to take whatever
measures may be required to correct the interference.
Note: This product has been designed to comply with the limits for a Class A
digital device pursuant to Part 15 of FCC Rules. These limits are designed to
provide reasonable protection against such interference when operating in a
commercial environment. This equipment generates, uses, and can radiate
radio frequency energy, and if not installed and used in accordance with this
guide, may cause harmful interference to radio communications.
Changes or modifications to this device not ex plic it l y approv ed b y Lantron ix will v oid
the user's authority to operate this device.
The information in this guide may change without notice. The manufacturer assumes
no responsibility for any errors that may appear in this guide.
Note: Export Control Classification Number 5A002, License exception ENC. The
following export agreement is required for encryption:
I agree that I will not export or re-export this product or firmware to a national resident
of Cuba, Iran, Iraq, Libya, North Korea, Sudan, Syria or any other country to which
the United States has embargoed goods; or to anyone on the US Treasury
Department's list of Specially Designated Nationals and Blocked Persons, US
Commerce Department's Table of Denial Orders and Entitles List, or the US State
Department's Debarred List. By receiving this product, I am agreein g to the foregoi ng
and I am representing and warranting that I am not located in, under the control of, or
a national or resident of any such country or on any such list.
SDS1101 /2101 User Guide 2
Revisions
Date
Rev.
Comments
8/06
A
Initial document
1/09
B
Include SDS2101 product; updated to firmware v6.5.0.0
Applications _______________________________________________________ 11
Application Examples ________________________________________________ 11
Protocol Support ____________________________________________________ 13
Additional Features __________________________________________________ 13
Configuration Methods _______________________________________________ 13
Product Information Label ____________________________________________ 14
3: Getting Started 15
Package Contents __________________________________________________ 15
Installing the SDS ___________________________________________________ 16
Required Information ________________________________________________ 17
Assigning the IP Address: DeviceInstaller ________________________________ 18
Assigning the IP Address: Serial Port Login _______________________________ 21
Hardware Address _______________________________________________ 17
IP Address _____________________________________________________ 17
Installing DeviceInstaller __________________________________________ 18
Assigning an IP Address __________________________________________ 18
Adding the Unit to the Manage List __________________________________ 19
Accessing the SDS1101/2101 Using DeviceInstaller ____________________ 19
Viewing the Current Configuration ___________________________________ 19
Next Step ______________________________________________________ 21
4: Configuration Using Web-Manager 23
Accessing SDS1101/2101 Us ing Dev iceIns t al ler ___________________________ 23
Network Configuration _______________________________________________ 24
Automatic IP Address Configuration _________________________________ 25
Static IP Address Configuration _____________________________________ 25
Serial Port Connection ____________________________________________ 39
Exiting Setup Mode _________________________________________________ 39
6: Setup Mode: Server Configuration 41
Server Configuration (Option 0) ________________________________________ 41
IP Address ________________________________________________________ 41
Set Gateway IP Address _____________________________________________ 41
Netmask: Number of Bits for Host Part __________________________________ 42
Change Telnet Configuration Password __________________________________ 42
DHCP Name _______________________________________________________ 42
a) Incoming Connection ___________________________________________ 47
b) Response ____________________________________________________ 48
c) Active Startup _________________________________________________ 48
d) Datagram Type _______________________________________________ 51
e) Modem Mode _________________________________________________ 51
Send the Escape Sequence (+++) in Modem Mode ________________________ 54
Show IP addr after 'RING' ____________________________________________ 54
Auto Increment Source Port ___________________________________________ 54
Remote IP Address _________________________________________________ 54
Remote Port _______________________________________________________ 54
DisConnMode ______________________________________________________ 54
Flush Mode (Buffer Flushing) __________________________________________ 55
Pack Control _______________________________________________________ 56
Describes the main features of the SDS and the protocols it
3: Getting Started
Provides information for installing your unit and getting it up and
4: Configuration Using Web-
Details using the Web-Manager to set parameters such as port
5: Configuration via Telnet or
Provides instructions for accessing Setup Mode (command line
11:: UUssiinngg TThhiiss GGuuiiddee
Purpose and Audience
This guide provides the information needed to configure, use, and update the
SDS1101 & SDS2101 device servers. It is for system administrators and those
responsible for installing and maintaining the SDS.
Chapter Summary
The remaining chapters in this guide include:
Manager
Serial Port (Setup Mode)
supports.
running using DeviceInstaller or a serial port connection.
and server properties.
interface) using a Telnet connection through the network or a
terminal or terminal emulation progra m through the ser ial por t.
6: Setup Mode: Server
Configuration
7: Setup Mode: Channel
Configuration
8: Setup Mode: Advanced
Settings
9: Firmware Upgrades
10: Monitor Mode
11: Troubleshooting and Contact
Information
12: SDS1101 Connections and
Pinouts
13: SDS2101 Connections and
Pinouts
14: SDS1101 Technical
Specifications
Details the network (server) settings
Details the serial port settings.
Details expert and security settings and explains how to reset
the unit to factory default values.
Provides instructions for obtaining the latest firmware and
updating the SDS.
Provides instructions for accessing and using the command line
interface to monitor the network and diagnose problems.
Describes common problems and error messages and how to
contact Lantronix Technical Support.
Provides descriptions and illust ratio ns of conne cti on hardware.
Provides descriptions and illust ratio ns of conne cti on hardware.
Lists technical specifications for the SDS1101.
SDS1101/2101 User Guide 9
15: SDS2101 Technical
Specifications
Lists technical specifications for the SDS2101.
A: Alternative Ways to Assign an
Provides detailed information about us ing DHC P, Au toIP,
B: Binary to Hexadecimal
Provides instructions for converting binary val ues to
SDS1101 & SDS2101 Quick Start
DeviceInstaller Online Help
Provides instructions for using the Window s-ba sed uti lity to
Com Port Redirector User Guide
1: Using This Guide
IP Address
Conversions
Additional Documentation
Visit the Lantronix web site at www.lantronix.com/support/documentation for the
latest documentation and the foll o wing add it ion al doc umentation:
BOOTP ARP, and Telnet to assign an IP address.
hexadecimals.
Provides the steps for getting the SDS1101/2101 up and
running.
configure the SDS1101/2101 and other Lantronix device
servers.
Provides information on using the Window s-ba sed uti lity to
create a virtual com port.
SDS1101/2101 User Guide 10
22:: IInnttrroodduuccttiioonn
The SDS1101 is a single-port device server and the SDS21 01 is a dual port dev ice
server that provide a quick, simple, and cost-effective wa y to bring the adva ntag e s of
data accessibility and remote management to devices not currently connected to a
network.
Applications
The SDS family of Device Servers allows serial devices, such as those listed below,
to connect and communicate over Ethernet networks using the IP protocol family
(TCP for connection-oriented stream applications and UDP for datagram
applications).
The SDS1100/2101 Secure Device Server offers secure data communications using
Rijndael Advanced Encr yption Stan dar ds (A ES) and is certified by the National
Institute of Standard and Technology (NIST) to meet Federal Information Processing
Standards (FIPS) required for data communication on US government and
government contractor’s networks.
Security alarms
Access control devices
Fire control panels
Time/attendance clocks and terminals
ATM machines
Data collection devices
RFID readers
Universal Power Supply (UPS) management units
Telecommunications equipment
Data display devices
Virtually any asynchronous RS-232, RS422, or RS485 device
Application Examples
Using a method called serial tunneling, the SDS encapsulates serial data into
packets and transports them over Ethernet. Using two SDS units, connected by a
network, virtual serial connections can extend across a facility or around the world.
SDS1101/2101 User Guide 11
2: Introduction
SDS
SDS
Figure 2-1. Serial Tunneling Example
Device Servers
The Com Port Redirector software included on the product CD simplifies the
integration process by extending the functionality of COM-port-based Windows™
applications. Virtual COM ports, mapped to remote device servers on the network,
can replace direct serial connections.
Figure 2-2. Direct TCP/IP or Redirector Configuration
Device Server
Note: For step-by-step instructions on configuring the SDS for serial tunneling or for
use with the Com Port Redirector, see SDS Configuration Tutorials on the Lantronix
web site:
www.lantronix.com/support.
SDS1101/2101 User Guide 12
Protocol Support
The SDS uses the Internet Protocol (IP) for network communications and the
Transmission Control Protocol (TCP) to assure that no data is lost or duplicated and
that everything sent to the connection arrives correctly at the target.
Supported protocols include:
ARP, UDP, TCP, ICMP, Telnet, TFTP, AutoIP, DHCP, HTTP, and SNMP for
network communications.
TCP, UDP, and Telnet for connections to the serial port.
TFTP for firmware updates.
IP for addressing, routing, and data block handling over the network.
User Datagram Protocol (UDP) for typical datagram applications in which
devices interact with other devic es witho ut a point-to-point connection.
Additional Features
Modem Emulation: In modem emulation mode, the SDS can replace dial-up
modems. The unit accepts modem AT commands on the serial port and then
establishes a network connection to the end device. This arrangement leverages
network connections and bandwidth to eliminate dedicated modems and phone lines.
2: Introduction
Built-in Web Server: The SDS includes a built-in web server for configuring the unit
and displaying operating and troubleshooting information on the attached links to
online support.
Configuration Methods
After installation, the SDS requires configuration. For the unit to operate correctly on
a network, it must have a unique IP address on the network. There are three basic
methods for logging into the SDS and ass ign ing IP addr es ses and other configurable
settings:
DeviceInstaller: Configure the IP address and other network settings on the SDS
using a Graphical User Interface (GUI) on a PC attached to a network.
(See Assigning the IP Address: DeviceInstaller )
Web-Manager: Through a web browser, configure the SDS settings using the
Lantronix Web-Manager. (See 4: Configuration Using Web-Manager.)
Serial and Telnet Ports: Use Setup Mode, a command line interface. There are two
approaches to accessing Setup Mode: making a Telnet connection to the network
port (9999) or connecting a terminal (or a PC running a terminal emulation program)
to the unit’s serial port. (See 5: Configuration via Telnet or Serial Port (Setup Mode).
SDS1101/2101 User Guide 13
Product Information Label
00-20-4A-14-01-18 or 00:20:4A:14:01:18
The product information label on the underside of the unit contains the following
information about your specific unit:
Bar code
Serial number
Product ID (name)
Product description
Hardware address (also referred to as the Ethernet or MAC address)
The first three bytes of the hardware address are fixed and read 00-20-4A, identif yin g
the unit as a Lantronix product. The fourth, fifth, and sixth bytes are unique numbers
assigned to each unit.
Figure 2-3. Sample Hardware Address
2: Introduction
SDS1101/2101 User Guide 14
33:: GGeettttiinngg SSttaarrtteedd
This chapter describes how to get your SDS up and running in the shortest possible
time.
Package Contents
Verify and inspect the contents of the SDS1101/2101 package using the following
list. If any item is missing or damaged, contact your place of purchase immediately.
SDS1101 or SDS2101
Six-foot DB9F-to-DB25M modem cable (SDS1101) or DB9F to DB9F Null
Modem Cable (SDS2101)
Power supply
CD with documentation and software utilities
Fastening kit
Quick Start Guide
SDS1101/2101 User Guide 15
Installing the SDS
Figure 3-1. SDS1101 Connected to Serial Device and Network
3: Getting Started
To install the unit:
Complete the following steps in order. Refer to the numbers in the figure above.
Note: See the sections that follow for details about connectors and pinouts.
1. Connect a serial device to your unit.
2. Connect an Ethernet cable to the RJ45 port.
3. Supply power to your unit using the power supply that was included in the
packaging.
Note: The required input voltage is 9-30 VDC (center +) or 10-24 VAC
(1.5W maximum power required).
4. Supply power to the serial device.
Note: If you encounter a problem, please see LEDs for diagnostic
information.
SDS1101/2101 User Guide 16
Required Information
Before configuring the SDS, have the following information available:
Hardware Address
Take note of the unit’s hardware address (also known as the Ether net or MAC
address). It is on the product label, in the format: 00-20-4a-XX-XX-XX, where the XXs
are unique numbers assigned to the product (see Product Information Label).
Hardware Address: 00-20-4a-_____-_____-_____
IP Address
The SDS must have a unique IP address on your network. This address references
the specific unit. By default, the unit is DHCP-enabled and automatically assigned an
IP address on DHCP-enabled networks. If you are assigning a static IP address, the
systems administrator generally provides the IP address, subnet mask, and gateway.
Note: The factory default IP address is 0.0.0.0 to enable DHCP, BOOTP,
and AutoIP. When the units boots, it sends a DHCP broadcast to try and get
an IP address. If it receives no reply from a DHCP server, the SDS tries
BOOTP. If the SDS does not receive a response from BOOTP, it reverts to
an AutoIP address.
3: Getting Started
IP Address: _______ _______ _______ _______
Subnet Mask: ___
____ _______ _______ _______
Gateway: _______ _______ _______ _______
You have several options for assigning an IP address and related network settings to
your unit. This chapter provides information about using the DeviceInstaller (graphical
user interface) and serial port login (command line interface) methods.
Note: For information about other methods of assigning the IP address, such
as DHCP, AutoIP, ARP, and Telnet, see Alternative Ways to Assign an IP
Address.
SDS1101/2101 User Guide 17
Assigning the IP Address: DeviceInstaller
This chapter covers the steps for getting the SDS1101/2101 device server online and
for viewing its current configuration.
Note: DeviceInstaller online Help provides more deta iled infor m ati on on
using DeviceInstaller.
Installing DeviceInstaller
To use the DeviceInstaller utility, first install it from the product CD.
1. Insert the product CD into your CD-ROM drive. The Lantronix DeviceInstaller
window displays.
2. If the CD does not launch automatically:
a) Click the Start button on the Task Bar and select Run.
b) Enter your CD drive letter, colon, backslash, Launch.exe (e.g.,
D:\Launch.exe).
3. Click the DeviceInstaller button.
3: Getting Started
4. Respond to the installation wizard prompts.
Assigning an IP Address
The unit’s IP address must be configured before it can work correctly on a network.
The unit’s IP address is normally set to 0.0.0.0 at the factory. The hardware address
is on the product label. The unit is DHCP enabled as the default.
To assign an IP address manually:
1. Click StartPrograms LantronixDeviceInstallerDeviceInstaller. If your
PC has more than one network adapter, a message displays. Select an adapter
and click OK.
Note: If the unit already has an IP address (e.g., DHCP has assigned an
IP address), click the Search icon
Lantronix device servers on the local network.
2. Click the Assign IP icon
3. If prompted, enter the hardware address (on the product label) and click Next.
4. Select Assign a specific IP address and click Next.
5. Enter the IP address. The Subnet mask displays automatically based on the IP
address; if desired, you may change it. On a local network, you can leave the
Default gateway blank (all zeros). Click Next.
and select the unit from the list of
.
6. Click the Assign button and wait several seconds until a confirmation message
displays. Click Finish.
SDS1101/2101 User Guide 18
7. Select the device from the main window list and select Ping from the Tools
Name
Configurable field. A name that identifies the SDS.
Group
Configurable field. A group name to categorize the SDS.
menu. The Ping Device dialog box shows the IP address of the selected unit.
8. From the Tools menu, click the Ping button. The results display in the Status
window. Click the Clear Status button to clear the window so you can ping the
device again.
Note: If you do not receive “Reply” messages, make sure the unit is
attached to the network properly and the IP address assigned is valid for
the particular network segment you are working with. If you are not sure,
check with your systems administrator.
9. Click the Close button to close the dialog box and return to the main window.
Adding the Unit to the Manage List
Now add the unit to the list of similar Lantronix devices on the network so you can
manage and configure it. To perform this step, click the Search icon .
DeviceInstaller locates the unit and adds it to the list. Now you can manage
(configure) the unit so it works with the serial device on the network.
You must configure the unit so it can communicate on a network with your serial
device. For example, you must set the way the unit will respo nd to ser ial and net w ork
traffic, how it will handle serial packets, and when to start or close a connection.
The unit’s configuration is stored in nonvolatile memory and is retained without
power. You can change the configuration at any time. The unit performs a reset after
you change and store the configuration.
In this chapter, we describe how to configure the SDS using Web-Manager,
Lantronix’s browser-based configuration tool. (For information on using Setup Mode,
our command line configuration interface, see 5: Configuration via Telnet or Serial
Port (Setup Mode).
Note: The examples in this section show a typical device. Your device may have
different configuration options.
Accessing SDS1101/2101 Using DeviceInstaller
Note: Make note of the hardware (MAC) address. You will need it to locate
the SDS using DeviceInstaller. For more information on the hardware
address, see Hardware Address.
Follow the instructions on the product CD to install and run DeviceInstaller.
1. Run DeviceInstaller and search for the list of available Lantronix device servers.
2. Click the SDS folder. The list of available SDS products displays.
3. Expand the list of SDS1101s by clicking the + symbol next to the SDS1101 icon.
Likewise, expand the list of SDS2101s by clicking the + symbol next to the
SDS2101 icon.
4. Select the specific SDS unit by clicking its hardware address.
5. In the right pane, click the WebConfiguration tab.
6. To view the SDS’s Web-Manager in the current DeviceInstaller window, click the
Go button. To open the Web-Manager in a web browser, click the External
Browser button. The Web-Manager displays.
Note: Alternatively, to open Web-Manager, open your web browser and
enter the IP address of the SDS.
A user and password dialog box displays. By default, no username and password are
configured.
SDS1101/2101 User Guide 23
Figure 4-1. Lantronix Web-Manager
The main menu is in the left pane of the Web-Manager window for both the SDS1101
and SDS2101.
Network Configurati on
The unit’s network values display when you select Network from the main menu. The
following sections describe the conf ig urab le par ameters on the Network Settings
page.
Figure 4-2. Network Settings
4: Configuration Using Web-Manager
SDS1101/2101 User Guide 24
Automatic IP Address Configuration
DHCP
Select Enable to permit the Dynamic Host Configuration
AutoIP
Select Enable to permit the SDS to generate an IP in the
DHCP Host Name
Enter the name of the host on the network providing the IP
IP Address
If DHCP is not used to assign IP addresses, enter it manual ly
Subnet Mask
A subnet mask defines the number of bits taken from the IP
Default Gateway
The gateway address, or router, allows communication to
An IP address can be assig ned automatically. You then enter related network
settings.
To assign an IP address automatically:
1. On the main menu, click Network.
2. Select Obtain IP address automatically.
3. Enter the following (as necessary):
BOOTP Select Enable to permit the Bootstrap Protocol (BOOTP)
server to assign the IP address from a pool of addresses
automatically. Enable is the default.
Protocol (DHCP) to assign a leased IP address to the SDS
unit automatically. Enable is th e default.
169.254.x.x address range with a Class B subnet. Enable is
the default.
4: Configuration Using Web-Manager
address.
Note: Disabling BOOTP, DHCP, and AutoIP (all thr ee chec k box es) is not
advised as the only available IP assignment method will then be ARP or
serial port.
4. When you are finished, click the OK button.
5. On the main menu, click Apply Settings.
Static IP Address Configuration
You can manually assign an IP address to the unit and enter related network
settings.
To assign an IP address manually:
1. On the main menu, click Network.
2. Select Use the following IP configuration.
3. Enter the following (as necessary):
in decimal-dot notation. The IP address must be set to a
unique value in the network.
SDS1101/2101 User Guide 25
address that are assigned for the host part.
other LAN segments. The gateway address should be the IP
address of the router connected to the same LAN segment as
the unit. The gateway address must be within the local
network.
Auto Negotiate
With this option, the Ethernet port auto-negotiates the speed
4. When you are finished, click the OK button.
5. On the main menu, click Apply Settings.
Ethernet Configuration
You must specify the speed and direction of data transmission.
To specify how data will be transmitted:
1. On the main menu, click Network.
2. Enter the following (as necessary):
4: Configuration Using Web-Manager
and duplex with the hardware endpoint to which it is
connected. This is the default.
If this option is not selected, complete the fields that become
available:
Speed: The speed of data transmis sio n. The default
setting is 100 Mbps.
Duplex: The direction of data transmis si on. The
default setting is Full.
3. When you are finished, click the OK button.
4. On the main menu, click Apply Settings.
Server Configuration
The unit’s server values display when you select Server from the main menu. The
following sections describe the configurable parameters on the Server Settings page.
SDS1101/2101 User Guide 26
4: Configuration Using Web-Manager
Telnet Password
Enter the password required for Telnet access.
TCP Keepalive (secs)
TCP Keepalive time defines how many seconds the unit waits
Figure 4-3. Server Settings
To configure the SDS’s device server settings:
1. On the main menu, click Server.
2. Configure or modify the following fields:
Server Configuration
Retype Password Re-enter the password required for Telnet access.
Advanced
ARP Cache Timeout
(secs)
When the unit communicates with another device on the
network, it adds an entry into its ARP table. ARP Cache
timeout defines the number of seconds (1-600) before it
refreshes this table. The default setting is 600.
during an inactive connection bef ore ch ec king its status. If the
unit does not receive a response, it drops that connection.
Enter a value between 0 and 60 seconds. 0 disables
keepalive. The default sett ing i s 45.
SDS1101/2101 User Guide 27
4: Configuration Using Web-Manager
Monitor Mode @ Bootup
Select Disable to disable en try into the monitor mod e using
HTTP Server Port
This option allows the configuration of the web server port
the yyy or xx1 key sequence at startup. This field prevents the
unit from entering monitor mode by interpreting the stream of
characters that are received during the device server's
initialization at startup. The d efault setting is Enable.
CPU Performance Mode
(SDS2101 Only)
MTU Size The Maximum Transmission Unit (MTU) is the largest physical
3. When you are finished, click the OK button.
4. On the main menu, click Apply Settings.
Host List Configurati on
The SDS scrolls through the host list until it connects to a device listed in the host list
table. After a successful connection, the unit stops trying to connect to any others. If
this connection fails, the unit continues to scroll through the table until the next
successful connection.
The host list supports a minimum of 1 and a maximum of 12 entries. Each entry
contains an IP address and a port number.
Note: The host list is disabled for Manual and Modem Mode. The unit does
not accept a data connection from a remote device when the hostlist option is
enabled.
Select the SDS2101's performance mode. Higher
performance settings require more energy . Low is 26 Mhz.
Regular is 48 Mhz; High is 88 Mhz. The default is Regular.
number. The valid range is 1-65535. The default sett ing is 80.
packet size a network can transmit for TCP and UDP. Enter
between 512 and 1400 byte s. T he default setting is 1400
bytes.
To configure the host list:
1. On the main menu, click Hostlist.
SDS1101/2101 User Guide 28
4: Configuration Using Web-Manager
Host Address
Enter or modify the host’s IP address.
Figure 4-4. Hostlist Settings
2. Enter or modify the following fields:
Retry Settings
Retry Counter Enter the value for the number of times the SDS should
attempt to retry connecting to the host list. The default setting
is 3.
Retry Timeout Enter the duration (in seconds) the SDS should abandon
attempting a connection to the host list. The default sett ing is
The Channel configuration defines how the serial port responds to network and serial
communication.
Serial Settings
To configure the channel’s serial settings:
SDS1101/2101 User Guide 29
4: Configuration Using Web-Manager
Disable Serial Port
When selected, disables communication through the serial
Protocol
From the drop-down menu, select the protocol type for the
Baud Rate
The unit and attached serial device, such as a modem, must
The SDS2101 also supports 460800 and 921600 baud. The
1. On the main menu, click Serial Settings (under Channel 1) to display the Serial
Settings window.
Figure 4-5. Channel Serial Settings
2. In the available fields, enter the following information:
Channel 1
port. The serial port is enabled by default.
Note: This feature is not available on single port device
servers.
Port Settings
selected channel. The default setting is RS232.
Flow Control Flow control manages data flow between devices in a network
to ensure it is processed efficiently. Too much data arriving
before a device is prepared to manage it causes lost or
retransmitted data. None is the default.
agree on a speed or baud rate to use for the serial connection.
Valid baud rates are 300, 600, 1200, 2400, 4800, 9600
(default), 19200, 38400, 57600, 115200, and 230400 baud.
SDS1101/2101 User Guide 30
default setting is 9600.
Data Bits
Indicates the number of bits in a transmitted data package.
Parity
Checks for the parity bit. The default setting is None.
Stop Bits
The stop bit follows the data and parity bits in serial
Pack Control
Enable Packing
Select to enable packing on the SDS.
Idle Gap Time
Select the maximum time for inactivity. The default time is
Match Bytes
Use to indicate the end of a series of data to be sent as one
With Active Connect
Select Yes to clear the input buffer with a connection that is
With Passive Connect
Select Yes to clear the input buffer with a connection initiated
At Time of Disconnect
Select Yes to clear the input buffer when the network
4: Configuration Using Web-Manager
The default setting is 8.
communication. It indicates the end of transmission. The
default setting is 1.
Two firmware-selectable packing algorithms define how and
when packets are sent to the network.
The standard algorithm is optimized for applications in which
the unit is used in a local environment, allowing for very small
delays for single characters, while keeping the packet count
low.
The alternate packing algorithm minimizes the packet count
on the network and is especially useful in applications in a
routed Wide Area Network (WAN). Adjusting parameters in
this mode can economize the network data stream.
Disabled by default.
12 milliseconds.
Match 2 Byte Sequence Use to indicate the end of a series of data to be sent as one
group. The sequence must occur sequentially to indicate end
of the data collection to the SDS. The default setting is No.
group. Set this value to 00 if specific functions are not needed.
Send Frame Only After the detection of the byte sequence, indicates whether to
send the data frame or the entire buffer. Select Yes to send
only the data frame. The default setting is No.
Send Trailing Bytes Select the number of bytes to send after the end-of-sequence
characters. The default setting is None.
Flush Input Buffer (Serial to Network)
initiated from the device to the network. The default setting is
No.
from the network to the device. The default setting is No.
connection to or from the device is disconnected. The default
setting is No.
SDS1101/2101 User Guide 31
Flush Output Buffer (Network to Serial)
With Active Connect
Select Yes to clear the output buffer with a connection that is
At Time of Disconnect
Select Yes to clear the output buffer when the network
With Passive Connect Select Yes to clear the output buffer with a connection initiated
3. When you are finished, click the OK button.
4. On the main menu, click Apply Settings.
Connection Settings - TCP
To configure a channel’s TCP settings:
1. On the main menu, click Connection. The Connection Settings window for the
channel displays.
4: Configuration Using Web-Manager
initiated from the device to the network. The default setting is
No.
from the network to the device. The default sett ing is No.
connection to or from the device is disconnected. The default
setting is No.
SDS1101/2101 User Guide 32
4: Configuration Using Web-Manager
Protocol
From the drop-down menu, select TCP.
Accept I ncoming
Select Yes to accept incoming connections. The default
Password Required
Determines whether a password is required for an incoming
Password
If Password Required was set to Yes, enter the password for
Figure 4-6. TCP Connection Settings
2. In the available fields, enter or modify the following information:
Connect Protocol
Connect Mode: Passive Connection
SDS1101/2101 User Guide 33
setting is Yes.
passive connection. This field is not available when a
password is set for Telnet mode. The default set ting is No.
passive connections.
4: Configuration Using Web-Manager
Modem Escape Sequence
Disable or enable the unit's ability to send the escape
Start Character
If Active Connect is set to With Start Character, enter the start
Modem Mode
Indicates the on-screen response type when in Modem Mode (if
Show IP Address After
Indicates whether to display the remote IP address upon
Auto increment for active
Select to auto-increment the local port number for new
Remote Port
Enter the remote port number.
Remote Host
Enter the IP address of the remote device.
Telnet Com Port Cntrl
This field is available for configuration only when Active
Terminal Name
This field is available for configuration only when Telnet Com
Pass Through
sequence. The default is Y (Yes) (send the escape
sequence).
Connect Mode: Active Connection
Active Connect
Select None (default) to disable Active Connect. Otherwise,
indicate the connection type from the drop-down list:
With Any Character: Attempts to connect when any
character is received from the serial port.
With Active Mdm Ctrl In: Accepts external connection
requests only when the Modem Control In input is
asserted.
With Start Character: Attempts to connect when it
receives a specific start character from the serial port.
The default start character is carriage return.
Manual Connection: Attempts to connect when
directed by a command string received from the serial
port.
Auto Start: Automatically connects to the remote IP
address and port after booting up.
character in this field. The default setting is 0D.
Modem Mode is enabled). The default setting is None.
Ring
connection. The default setting is Yes.
Endpoint Configuration
Local Port Enter the local port number.
connect
outgoing connections. The range of auto-incremented port
numbers is 50,000 to 59,999 and loops back to the beginning
when the maximum range is reached. Disabled by default.
Common Options
Connect is set to None. Select Enable to permit Telnet
communication to the SDS unit. The Telnet Com Port Cntrl
feature is used in conjunction with the Com Port Redirector
(CPR) utility. (See the CPR online Help for details.)
SDS1101/2101 User Guide 34
Port Cntrl is set to Enable.
4: Configuration Using Web-Manager
If this option is set to True, the device server scrolls through
Select Blink for the status LEDs to blink upon connection, or
On Mdm_Ctrl_In Drop
Set to Yes for the network connection to or from the serial port
When set to Yes, the TCP connection closes even if the
With EOT
Select Yes to drop the connection when Ctrl-D or Hex 04 is
Inactivity Timeout
Use this parameter to set an inactivity timeout. The unit drops
Use the terminal name for the Telnet terminal type. Enter only
one name. When this option is enabled, the unit also reacts to
the end of record (EOR) and binary options, which can be
used for applications such as terminal emulation to IBM hosts.
Connect Response A single character is transmitted to the serial port when there
is a change in connection state. The default setting is None.
Use Hostlist
the host list until it connects to a device listed in the host list
table. Once it connects, the unit stops trying to connect to any
others. If this connection fails, the unit continues to scroll
through the table until it connects to another IP in the host list.
The host list is disabled for Manual Mode and for Modem
Mode. The unit will not accept a data connection from a
remote device when the host list option is enabled.
LED
select None for no LED output. The default setting is Blink.
Disconnect Mode
Hard Disconnect
3. When you are finished, click the OK button.
4. On the main menu, click Apply Settings.
Connection Settings - UDP
To configure a channel’s UDP settings:
1. On the main menu, click Connection. The Connection Settings window for the
selected channel displays.
to disconnect (drop) when Modem Control In (DSR for
SDS1101) transitions from a high state to a low state. The
default setting is No.
remote site does not acknowledge the disconnect request.
detected. Both TelnetCom Port Cntrl and Check EOT (Ctrl+ D) must be enabled for Disconne ct with EOT to
function properly. Ctrl+D is only detected going from the serial
port to the network. The default setting is No.
the connection if there is no activity on the serial line before
the set time expires. Enter time in the format mm:ss, where m
is the number of minutes and s is the number of seconds. To
disable the inactivity timeout, enter 00:00.
2. In the available fields, enter or modify the following information:
SDS1101/2101 User Guide 35
4: Configuration Using Web-Manager
Local Port
Enter the local port number.
Figure 4-7. UDP Connection Settings
Connect Protocol
Protocol Select UDP from the drop-down menu.
Datagram Mode
Datagram Type Configures the remote IP or network broadcast address and
Accept I ncoming Select Yes to accept incoming UDP datagrams. The default
Endpoint Configuration
SDS1101/2101 User Guide 36
the remote port. Enter 01 for directed or broadcast UDP. The
default setting is 00.
setting is Yes.
Remote Port
Enter the port number of the remote device.
Remote Host
Enter the IP address of the remote device.
Use Broadcast
Select to broadcast the UDP datagram. Datagrams of type 01
Device Address Table
The table is enabled when Datagram Type is set to FD. Enter
3. When you are finished, click the OK button.
4. On the main menu, click Apply Settings.
Apply Settings
4: Configuration Using Web-Manager
can be sent as a broadcast by enabling this option. The
default is not to broadcast.
Note: Datagrams are sent as subnet-directed broadcasts.
values between 1 and 255 to identify units on the local
network of device servers.
Note: Lantronix Tech Support supports Datagram type 01.
Datagram Type FD is for OEM use.
1. To save and apply the configuration changes to the device server, click the
Apply Settings button.
Note: Clicking OK on each page does not change the configuration on the device.
OK tells the SDS what changes to use; Apply Settings makes the changes
permanent and reboots the SDS.
Apply Factory Defaults
1. Click the Apply Defaults button to set the device server back to the default
settings. For details see Default Settings (Option 7).
2. Click Yes to set factory settings, or click No to cancel.
You must configure the unit so it can communicate on a network with your serial
device. As an alternative to using a web browser, as described in the previous
chapter, you can use the following procedures remotely or locally:
Use a Telnet connection to configure the unit over the network.
Use a terminal or terminal emulation program to access the serial port locally.
The series of prompts at which you enter configuration settings is called Setup
Mode.
Note: Detailed information about other setup methods is available from your
Lantronix Sales Associate.
The unit’s configuration is stored in nonvolatile memory and is retained without
power. You can change the configuration at any time. The unit performs a reset after
the configuration has been changed and stored.
This chapter tells you how to access Setup Mode and the general procedure for
using it. To complete the configuration, continue with 6: Setup Mode: Server
This chapter explains how to configure the network settings.
Note: Current values display in parentheses.
Server Configuration (Opt ion 0)
The unit’s basic network parameters display when you select Server configuration
(option 0). The IP Address, Set Gateway IP Address, and Netmask fields display
the current values.
Figure 6-1. Network Settings
IP Address : (000) .(000) .(000) .(000)
Set Gateway IP Address (N)
Netmask: Number of Bits for Host Part (0=default) (0)
Change telnet config password (N)
IP Address
If DHCP is not used to assign IP addresses, enter the IP address manually. The IP
address must be set to a unique value in the network . Enter each oc tet and pr ess
Enter between each section. The current value displays in parentheses.
IP Address : (000) (000) (000) (000) _
If DHCP is used, the third octet of the IP address sets the BootP/DHCP/AutoIP
options. The following table shows the bits you can manually configure to force the
SDS to disable AutoIP, DHCP, or BootP . To disable an option, set the appropriate bit.
Table 6-1. BootP/DHCP/AutoIP options
Options Bit
AutoIP 0 1
For example, if the third octet is 0.0.5.0, the AutoIP and BootP options are
disabled; only DHCP is enabled. (The value 5 results from adding the binary
equivalents of 0 and 2.) This is the most common setting when using DHCP.
Set Gateway IP Address
The gateway address, or router, allows communication to other LAN segments. The
gateway address should be the IP address of the router connected to the same LAN
segment as the unit. The gateway address must be within the local network. The
SDS1101/2101 User Guide 41
6: Setup Mode: Server Configuration
Network Class
Host Bits
Netmask
A
24
255.0.0.0
B
16
255.255.0.0
default setting is N (No), meaning the gateway address has not been set. To set the
gateway address, type Y and enter the address.
Set Gateway IP Address (N) ? Y
Gateway IP addr (000) (000) (000) (000)_
Netmask: Number of Bits f or Host Par t
A netmask defines the number of bits taken from the IP address that are assigned for
the host part.
Netmask: Number of Bits for Host Part (0=default) (0) _
Note: Class A: 24 bits; Class B: 16 bits; Class C: 8 bits
The unit prompts for the number of host bits to be entered, then calculates the
netmask, which appears in standard dec imal-dot notation (for example,
255.255.255.0) when the saved parameters display. The default setting is 0.
Table 6-2. Standard IP Network Netmasks
C 8 255.255.255.0
Change Telnet Configuration Password
Setting the Telnet configuration password prevents unauthorized access to the setup
menu through a Telnet connection to port 9999 or through web pages. The password
must have 4 characters. The default setting is N (No).
Figure 6-2. Change Telnet Configuration Password
Change telnet config password (N) ? _
An enhanced password setting (for Telnet access only) of 16 characters is available
under Security Settings (Option 6).
Note: You do not need a password to access the Setup Mode window by a
serial connection.
DHCP Name
If a DHCP server has automatically assigned the IP address and network settings,
you can discover the unit by using the DeviceInstaller network search feature or
Monitor Mode (see 10: Monitor Mode).
Note:When you enter Monitor Mode from the serial port with network
connection enabled and issue the NC (Network Communication) command,
you see the unit’s IP configuration.
SDS1101/2101 User Guide 42
6: Setup Mode: Server Configura tio n
There are three methods for assigning DHCP names to the unit.
Default DHCP Name: If you do not change the DHCP name, and you are
using an IP of 0.0.0.0, then the DHCP name defaults to XX.XX.XX.XX
(XXXXXX is the last 6 digits of the MAC address shown on the label on the
bottom/side of the unit). For example, if the MAC address is 00-20-4A-12-3456, then the default DHCP name is C123456.
Custom DHCP Name: You can create your own DHCP name. If you are using
an IP address of 0.0.0.0, then the last option in Server configuration is Change DHCP device name. This option allows you to change the DHCP name to an
alphanumeric name (LTX in our example).
Change DHCP device name (not set) ? (N) Y
Enter new DHCP device name : LTX
Numeric DHCP Name: You can change the DHCP name by specifying the last
octet of the IP address. When you use this method, the DHCP name is LTXYY
where YY is what you chose for the last octet of the IP address. If the IP
address you specify is 0.0.0.12, then the DHCP name is LTX12. This method
only works with 2 digit numbers (01-99).
This chapter explains how to configure the serial port.
Notes:
Current values display in parenthesis.
You must enter some values in hexadecimal notation. (See 0 .)
Channel 1 (Option 1) & Channel 2 (Opti on 2 on S DS 2101 only)
Select Channel 1 (option 1) or Channel 2 (option 2 on SDS2101) from the Change
Setup menu to define how the serial port responds to network and serial
communications. The following sections describe the configurable parameters within
the Channel configur ati on menu.
Figure 7-1. Serial Port Settings
Baudrate
The unit and attached serial device, such as a modem, must agree on a speed or
baud rate to use for the serial connection. Valid baud rates are 300, 600, 1200, 2400,
4800, 9600 (default), 19200, 38400, 57600, 115200, and 230400 baud. The
SDS2101 also supports 460800 and 921600 baud.
Baudrate (9600) ? _
SDS1101/2101 User Guide 44
I/F (Interface) Mode
I/F Mode Option
7
6
5
4
3
2
1
0
RS-232C
(1)
0
0
7 Bit
1
0
8 Bit
1
1
Even Parity
1
1
Odd Parity
0
1
2 stop bits
(1)
1
1
Common I/F Mode Setting
Binary
Hex
The Interface (I/F) Mode is a bit-coded b yte entere d in hexadecimal notation. The
default setting is 4C.
I/F Mode (4C) ? _
The following table displays available I/F Mode options:
Note: All bit positions in the table that are blank represent “don’t care” bits
for that particular option, which can be set to either a 0 or 1 value.
RS-422/485 4-wire 0 1
RS-485 2-wire 1 1
7: Setup Mode: Channel Configur at io n
Table 7-1. Interface Mode Options
(1)
Flow
No Parity 0 0
1 stop bit 0 1
2 stop bits are implemented by the software. This might influence performance.
The following table demonstrates how to build some common Interface Mode
settings:
Table 7-2. Common Interface Mode Settings
RS-232C, 8-bit, No Parity, 1 stop bit 0100 1100 4C
RS-232C, 7-bit, Even Parity, 1 stop bit 0111 1000 78
RS-485 2-wire, 8-bit, No Parity, 1 stop bit 0100 1111 4F
RS-422, 8-bit, Odd Parity, 1 stop bit 0101 1101 5D
Flow control sets the local handshaking method for stopping serial input/output. The
default setting is 00.
Flow (00) ? _
SDS1101/2101 User Guide 45
Use the following table to select flow control options:
Flow Control Option
Hex
Hardware handshake with RTS/CTS lines
02
XON/XOFF pass characters to host
05
Port Numbers
Reserved for
1 – 1024
Reserved (well known ports)
Port Number
The setting represents the source port number in TCP connections. It is the number
that identifies the channel for remote initiating connections.
Port No (10001) ? _
The default setting for Port 1 is 10001, and for Port 2 is 10002 (SDS2101 only). The
range is 1-65535, except for the following reserved port numbers:
Warning: We recommend that you not use the reserve d p o rt numbers
for this setting as incorrect operation may result.
Use Port 0 for the outgoing local port to change with each connection. The port range
is 50,000-59,999. Each subsequent connection increments the number by 1 (it wraps
back around to 50,000).
Only use this automatic port increment feature to initiate a connection using T C P. Set
the port to a non-zero value when the unit is in a passive mode or when using UDP
instead of TCP.
Connect Mode
Connect Mode defines how the unit makes a connection, and how it reacts to
incoming connections over the network.
ConnectMode (C0) ? _
Enter Connect Mode options in hexadecimal notation. The default setting is C0.
Note: All bit positions in the table that are blank represent “don’t care” bits for
that particular option, which can be set to either a 0 or 1 value.
SDS1101/2101 User Guide 46
7: Setup Mode: Channel Configur at io n
Connect Mode Option
7 6 5 4 3 2 1
0
Never accept incoming
0 0 0
Accept with DTR Active
0 1 0 Always Accept
1 1 0
No active startup
0 0 0 0 With any character
0 0 0
1
With DTR Active
0 0 1
0
With a specific start character
0 0 1 1 Manual connection
0 1 0
0
Autostart
0 1 0
1
No Echo
0 0 1 1
Data Echo & Modem Response
Data Echo & Modem Response
Modem Response Only (Numeric)
0 0 1 1 1 1 Modem Response Only (Verbose)
0 0 1 1 1
0
Never Accept Incom ing
Rejects all external connection attempts.
Accept with DTR Active
Accepts external connection requests only when the DTR input
Always Accept
Accepts any incoming connection when a connection is not
Table 7-5. Connect Mode Options
a) Incoming Connection
b) Response
Nothing (quiet) 0
Character response (C=connect,
D=disconnect, N=unreachable)
c) Active Startup
Hostlist 0 0 1 0
d) Datagram Type
Directed UDP 1 1 0 0
e) Modem Mode
(Numeric)
1
0 1 1 1 1
(Verbose)
a) Incoming Connection
SDS1101/2101 User Guide 47
0 1 1 1 0
is asserted. Cannot be used with Modem Mode.
already established. Default setting.
b) Response
Character Response
A single character is transmitted to the serial port when there is a
No Active Startup
Does not attempt to initiate a connection under any
With DTR Active
Attempts to connect when the DTR input changes from not
With a Specific Start
Attempts to connect when it receives a specific start character
c) Active Startup
With Any Character Attempts to connect when any character is received from the
7: Setup Mode: Channel Configur at io n
change in connection state:
C = connected, D = disconnected, N = host unreachable.
This option is overridden when the Active Start Modem Mode or
Active Start Host List is in effect. Default setting is Nothing
(quiet).
circumstance. Default setting.
serial port.
asserted to asserted.
Character
Manual Connection Attempts to connect when directed by a command string
from the serial port. The default start character is carriage return.
received from the serial port. The first character of the command
string must be a C (ASCII 0x43), and the last character must be
either a carriage return (ASCII 0x0D) or a line feed (0x0A). No
blanks or space characters may be in the command string.
Between the first and last command string characters must be a
full or partial destination IP address and may be a destination
port number.
The IP address must be in standard decimal-dot notation and
may be a partial address, representing the least significant 1, 2,
or 3 bytes of the remote IP address. The period is required
between each pair of IP address numbers.
If present, the port number must follow the IP address, must be
presented as a decimal number in the range 1-65535, and must
be preceded by a forward slash (ASCII 0x2F). The slash
separates the IP address and the port number. If you omit the
port number from a command string, the internally stored remote
port number starts a connection.
If a partial IP address is presented in a command string, it is
interpreted to be the least significant bytes of the IP address and
uses the internally stored remote IP address to provide the most
significant bytes of the IP address. If the IP address entered is
0.0.0.0/0, the device server enters Monitor Mode.
For example, if the remote IP address already config ured in the
unit is 129.1.2.3, then an example command string would be
C3/7. (This would connect to 129.1.2.3 and port 7.) You may
also use a different ending for the connection string. For
example, C50.1/23 would connect you to 129.1.50.1 and port 23.
SDS1101/2101 User Guide 48
7: Setup Mode: Channel Configur at io n
Command String
Result if remote IP is 129.1.2.3 and remote port is 1234
Complete override; connection is started with host 121.2.4.5,
Autostart (Automatic
If you enable Autostart, the unit automatically connects to the
Table 7-6. Manual Connection Address Example
C121.2.4.5/1
C5 Connects to 129.1.2.5, port 1234.
C28.10/12 Connects to 129.1.28.10, port 12.
C0.0.0.0/0 Enters Monitor Mode.
port 1.
Connection)
Hostlist If you enable this option, the device server scrolls through the
remote IP address and remote port specified when the firmware
starts.
hostlist until it connects to a device listed in the hostlist table.
Once it connects, the unit stops trying to connect to any others. If
this connection fails, the unit continues to scroll through the table
until it is able to connect to another IP in the hostlist.
Hostlist supports a minimum of 1 and a maximum of 12 entries.
Each entry contains the IP address and the port number.
The hostlist is disabled for Manual and Modem Modes. The unit
does not accept a data connection from a remote device when
the hostlist option is enabled.
SDS1101/2101 User Guide 49
7: Setup Mode: Channel Configur at io n
Figure 7-2. Hostlist Option
SDS1101/2101 User Guide 50
To enable the hostlist:
Without Echo
In Modem Mode, echo refers to the echo of all of the characters
1. Enter a Connect Mode of 0x20 (2X), where X is any digit. The menu shows you
a list of current entries already defined in the product.
2. To delete, modify, or add an entry, select Yes. If you enter an IP address of
0.0.0.0, that entry and all others after it are deleted.
3. After completing the hostlist, repeat the previous step if necessary to edit the
hostlist again.
4. For Retrycounter, enter the number of times the Lantronix unit should try to
make a good network connection to a hostlist entry that it has successfully
ARPed. The range is 1-15, with the default set to 3.
5. For Retrytimeout, enter the number of seconds the unit should wait before
failing an attempted connection. The time is stored as units of milliseconds in the
range of 10-65535. The default setting is 250.
d) Datagram Type
Directed UDP When selecting this option, you are prompted for the Datagram type.
7: Setup Mode: Channel Configur at io n
Enter 01 for directed or broadcast UDP. Datagrams of type 01 can be
sent as a broadcast by enabling the Send as Broadcast option. The
default is not to broadcast.
Note: Datagrams are sent as subnet-directed broadcasts.
When the UDP option is in effect, the unit never attempts to initiate a
TCP connection because it uses UDP datagrams to send and receive
data.
e) Modem Mode
In Modem (Emulation) Mode, the unit presents a modem interface to the attached
serial device. It accepts AT-style modem commands and handles the modem signals
correctly.
Normally, there is a modem connected to a local PC and a modem connected to a
remote machine. A user must dial from the local PC to the remote machine,
accumulating phone charges for each connection. Modem Mode allows you to
replace modems with SDSs, and to use an Ethernet connection instead of a phone
call. By not having to change communications applications, you avoid potentially
expensive phone calls.
To select Modem Mode, set the Connect Mode to C6 (no echo), D6 (echo with full
verbose), D7 (echo with numeric response), CF (modem responses only, numeric
response), or CE (modem responses only, full verbose).
Note: If the unit is in Modem Mode, and the serial port is idle, the unit can
still accept network TCP connections to the serial port if C on nect Mode is set
to C6 (no echo), D6 (echo w ith full verb os e) , D7 (echo with numeric
response, CF (modem responses only, numeric response), or CE (modem
responses only, full verbose).
entered in command mode; it does not mean to echo data that is
SDS1101/2101 User Guide 51
7: Setup Mode: Channel Configur at io n
transferred. Quiet Mode (without echo) refers to the modem not
Message
Meaning
OK
Command was executed without error.
NO CARRIER
A network connection has been closed.
A remote device, having IP address n.n.n.n, is connecting to this
Numeric Response
1
Connected
2
Ring
4
Error
sending an answer to the commands received (or displaying what
was typed).
Data Echo & Modem
Response
Modem Responses
Only
Full Verbose: The unit echoes mode m comman ds and resp o nds to a
command with a message string shown in the table below.
Numeric Response: The unit echoe s mode m comman ds and
responds to a command with a numeric response.
Full Verbose: The unit does not echo modem commands and
responds to a command with a message string shown in the table
below.
Numeric Response: The unit does not echo modem commands and
responds to a command with a numeric response.
Table 7-7. Modem Mode Messages
Full Verbose
CONNECT A network connection has been established.
RING n.n.n.n.
device.
0 OK
3 No Carrier
Received commands must begin with the two-character sequence AT and be
terminated with a carriage return character.
The unit ignores any character sequence received not s tar ting wit h AT, and only
recognizes and processes singl e AT-style commands. The unit treats compound AT
commands as unrecognized commands.
If the Full Verbose option is in effect, the unit responds to an unrecognized
command string that is otherwise formatted correctly (begins with AT and ends with
carriage return) with the "OK" message and takes no further action.
If the Numeric Response option is in effect, the unit responds to an unrecognized
command string that is otherwise formatted correctly with a "0" message and takes
no further action.
SDS1101/2101 User Guide 52
7: Setup Mode: Channel Configur at io n
Modem Mode
Command
Function
Enables or disables connections from the network going to the serial
Enables numeric response or full verbose.
When an active connection is in effect, the unit transfers data and does not process
commands received from the serial interface.
When a connection is terminated or lost, the unit reverts to command mode.
When an active connection is in effect, the unit terminates the connection if it
receives the following sequence from the attached serial device:
No serial data is received for one second.
The character sequence +++ is received, with no more than one second
between each two characters.
No serial data is received for one second after the last + character. At this time,
the unit responds affirmatively per the selected echo/response mode.
The character string ATH is received, terminated with a carriage return. The
unit responds affirmatively according to the selected echo/response mode and
drops the network connection. The serial interface reverts to accepting
command strings.
If this sequence is not followed, the unit remains in data transfer mode.
Table 7-8. Modem Mode Commands
ATDTx.x.x.x,pppp or
ATDTx.x.x.x/pppp
ATDTx.x.x.x
ATD0.0.0.0
ATD
ATDx.x.x.x
ATH Hangs up the connection (Entered as +++ATH ).
ATS0=n
ATEn
Makes a connection to an IP address (x.x.x.x) and a remote port
number (pppp).
Makes a connection to an IP address (x.x.x.x) and the remote port
number defined within the unit.
Forces the unit into Monitor Mode if a remote IP address and port
number are defined within the unit.
Forces the unit into Monitor Mode if a remote IP address and port
number are not defined within the unit.
Makes a connection to an IP address (x.x.x.x) and the remote port
number defined within the unit.
port.
n=0 disables the ability to make a connection from the network to the
serial port.
n=1-9 enables the ability to make a connection from the network to
the serial port.
n>1-9 is invalid.
Enables or disables character echo and responses.
n=0 disables character echo and responses.
n=1 enables character echo and responses.
ATVn
SDS1101/2101 User Guide 53
n=0 enables numeric response.
n=1 enables full verbose.
7: Setup Mode: Channel Configur at io n
Note: The unit recognizes these AT commands as single commands such as
ATE0 or ATV1; it does not recognize compound commands such as ATE0V.
Send the Escape Sequence (+++) i n Mode m M ode
Send ‘+++’ in Modem Mode (Y) ? _
Disable or enable the SDS’s ability to send the escape sequence. The default setting
is Y (Yes) (send the escape sequence).
Show IP addr after 'RING'
Show IP addr after ‘RING’ <Y> ?
Disable or enable the SDS's ability to show the IP address after RING in Modem
Mode. The default is Y (Yes), to show the IP address.
Auto Increment Source Port
Auto increment source port (N) ? _
Y (Yes) auto increment the source port. The SDS increments the port number used
with each new connection.
Remote IP Address
This is the destination IP address used with an outgoing connection.
Remote IP Address : (000) (000) (000) (000)_
Note: This option does not display when Hostlist is enabled from the
ConnectMode prompt (see Connect Mode for more information).
Remote Port
You must set the remote TCP port number for the unit to make outgoing connections.
This parameter defines the port number on the target host to which a connection is
attempted.
Remote Port (0) ? _
To connect an ASCII terminal to a host using the unit for login purposes, use the
remote port number 23 (Internet standard port number for Telnet services).
Note: This option does not display when Hostlist is enabled from the
ConnectMode prompt (see Connect Mode for more information).
DisConnMode
This setting determines the conditions under which the unit will cause a network
connection to terminate. The default setting is 00.
SDS1101/2101 User Guide 54
7: Setup Mode: Channel Configur at io n
Disconnect Mode Option
7 6 5
4
3 2 1
0
Disconnect with Modem Control In drop
(6)
1
Ignore DTR
0
(1)
(2)
(3)
Disable hard disconnect
1
(4)
(5)
DisConnMode (00) ? _
Notes:
In DisConnMode (Disconnect Mode), DTR drop either drops the connection or
is ignored.
All bit positions in the table that are blank represent “don’t care” bits for that
particular option, which can be set to either a 0 or 1 value.
Table 7-9. Disconnect Mode Options
Telnet Com Port Cntrl and terminal type setup
Channel (port) password
Hard disconnect
0
State LED off with connection
Disconnect with EOT (^D)
(1) The Telnet Com Port Control feature is used in conjunction with Com Port Redirector.
The SDS sends the "Termi nal Type" upon an outgoing connection.
(2) A password is required for a connection to the serial port from the network.
(3) The TCP connection closes even if the remote site does not acknowledge the
disconnection.
(4) When there is a network connection to or from the serial port, the stat e LED turns off
instead of blinking.
(5) When Ctrl+D or Hex 04 is detected, the connection is dropped. Both Teln et Com
Port Cntrl and Disconnect w ith EOT must be enabled for Disconnect with EOT to
function properly. Ctrl+D is onl y detected going from the serial port to the network.
(6) When Modem Control In t ransitions from a high state to a low state, the network
connection to or from the serial port drops.
1
1
1
1
Flush Mode (Buffer Flushing)
Using this parameter, you can control line handling and network buffers with
connection startup and disconnect. The default setting is 00.
FlushMode (00) ? _
You can also select between two different packing algorithms.
Note: All bit positions in the table that are blank represent “don’t care” bits for
that particular option, which can be set to either a 0 or 1 value.
SDS1101/2101 User Guide 55
7: Setup Mode: Channel Configur at io n
Function
7 6 5 4 3
2 1 0
Input Buffer (Serial to Network)
Clear with a connection initiated from the network to the device
1 Clear when the network connection to or from the device is disconnected
1
Clear with a connection initiated from the device to the network
1
Clear with a connection initiated from the network to the device
1
Alternate Packing Algorithm (Pack Control)
Enable
1
Option
7
6
5
4
3
2
1
0
Packing Interval
None
0
0
One
0
1
Two
1
0
Table 7-10. Flush Mode Options
Clear with a connection initiated from the devic e to the netw or k 1
Output Buffer (Network to Serial)
Clear when the network connection to or from the device is disconnected 1
Pack Control
The packing algorithms define how and when packets are sent to the network. The
standard algorithm is optimized for applications in which the unit is used in a local
environment, allowing for very small delays for single characters, while keeping the
packet count low. The alternate packing algorithm minimizes the packet count on the
network and is especially useful in applications in a routed Wide Area Network
(WAN). Adjusting parameters in this mode can economize the network data stream.
Pack control settings are enabled in Flush Mode. Set this value to 00 if you do not
need specific functions.
Note: All bit positions in the table that are blank represent “don’t care” bits for
that particular option, which can be set to either a 0 or 1 value.
Packing Interval defines how long the unit should wait before sending accumulated
characters. This wait period is between successive network segments containing
data. For alternate packing, the default interval is 12 ms.
Trailing Characters
In some applications, CRC, Checksum, or other trailing characters follow the end-ofsequence character; this option helps to adapt frame transmission to the frame
boundary. The default setting is 00 (none).
Send Characters
If 2-Byte Send Character Sequenc e is enabled, the unit interprets the
sendchars as a 2-byte sequence; if this option is not enabled, the unit
interprets them independently. The default setting is 0 (disabled).
7: Setup Mode: Channel Configur at io n
If Send Immediately After Characters is not set, any characters already in
the serial buffer are included in the transmission after a "transmit" condition is
found. If this option is set, the unit sends immediately after recognizing the
transmit condition (sendchar or timeout). The default setting is 0.
Note: A transmission might occur if status information needs to be
exchanged or an acknowledgment needs to be sent.
DisConnTime (Inacti vi ty Timeout)
Use this parameter to set an inactivity timeout. The unit drops the connection if there
is no activity on the serial line before the set time expires. Enter time in the format
mm:ss, where m is the number of minutes and s is the number of seconds.
DisConnTime (00:00) ?:
To disable the inactivity timeout, enter 00:00. Range is 0 (disabled) to 5999 seconds
(99 minutes, 59 seconds). Default setting is 0.
Send Characters
Enter up to two characters in hexadecimal representation in sendchar.
SendChar 1 (00) ? _
SendChar 2 (00) ? _
If the unit receives a character on the serial line that matches one of these
characters, it sends the character immediately, along with any awaiting characters, to
the TCP connection. This action minimizes the response time for specific protocol
characters on the serial line (for example, ETX, EOT). Setting the first sendchar to 00
SDS1101/2101 User Guide 57
disables the recognition of the characters. Alternatively, the unit can interpret two
characters as a sequence (see Pack Control). The default setting is 00.
Telnet Terminal Type
This parameter displays only if you enabled the terminal type option in Disconnect
Mode. With this option enabled, you can use the terminal name for the Telnet
terminal type. Enter only one name.
With terminal type option enabled, the unit also reacts to the EOR (end of record) and
binary options, useful for applications like terminal emulation to IBM hosts.
Channel (Port) Password
This parameter appears only if the channel (port) password option is enabled in
Disconnect Mode. With this option enabled, you can set a password on the serial
port. The default setting is all 0s.
Note: You can change these settings using Telnet or serial connections, but
not all of them are available on the Web-Manager.
Caution: Changing the expert settings can drastically affect the
performance and access to the product. These settings should only be
changed by an experienced network administrator.
Figure 8-1. Expert Settings
This option allows you to change how many seconds the unit waits during a silent
connection before attempting to see if the currently connected network device is still
on the network. If the unit gets no response, it drops that connection. The default
setting is 45.
TCP Keepalive time in s (1s – 65s; 0s=disable): (45)? _
ARP Cache timeout in seconds
Whenever the unit communicates with another device on the network, it adds an
entry into its ARP table. The ARP Cache timeout option allows you to define how
many seconds (1-600) the unit will wait before timing out this table. The default
setting is 600.
ARP Cache timeout in s (1s – 600s): (600)? _
CPU Performance (SDS2101 only)
Select the SDS2101’s performance mode. Higher performance settings require more
energy. Low is 26 Mhz; Regular is 48 Mhz; High is 88 Mhz. The default is Regular.
CPU performance (0=Regular, 1=Low, 2=High): (0)
Disable Monitor Mode at bootup
This option allows you to disable all entries into Monitor Mode during startup, except
for the ‘xxx’ sequence. This prevents entry using yyy, zzz, xx1, and yy1 key
SDS1101/2101 User Guide 59
sequences (only during the bootup sequence). The default for Disable Monitor Mode
at bootup is N (No). (See 10: Monitor Mode.)
Monitor Mode @ bootup : enabled
HTTP Port Number
This option allows the configuration of the web server port number. The valid range is
1-65535. The default HTTP port number is 80.
HTTP Port Number : (80) ? _
MTU Size
The Maximum Transmission Unit (MTU) is the largest physical packet size a network
can transmit for TCP and UDP. Enter between 512 and 1400 bytes. The default
setting is 1400 bytes.
MTU Size: (1400) ? _
Enable alternate MAC
8: Setup Mode: Advanced Settings
If necessary, enable the alternate MAC address (if specified in the OEM setup
record). The default setting is N (No).
Enable alternate MAC (N) ? _
Ethernet connection type
The SDS allows for the Ethernet speed and duplex to be manually configured. Enter
0 for auto-negotiation (default). To select the speed and duplex, enter one of the
following: 2 (10Mbit/half duplex), 3 (10Mbit/full duplex), 4 (100Mbit/half duplex), or 5
(100Mbit/full duplex).
Ethernet connection type: (0) ? _
Security Settings (Option 6)
You can change security settings by means of Telnet or serial connections only, not
on the Web-Manager. We recommend that you set security over the dedicated
network or over the serial setup to prevent eavesdropping.
Caution: Disabling both Telnet Setup and Port 77FE will prevent users
from accessing the setup menu from the network. Disabling Port 77FE
also disables the Web from configuring th e device.
Select 6 to configure security settings.
SDS1101/2101 User Guide 60
Disable SNMP (N) ?
SNMP Community Name (public):
Disable Telnet Setup (N) ?
Disable TFTP Firmware Update (N) ?
Disable Port 77FEh (N) ?
Disable Web Server (N) ?
Disable Web Setup (N) ?
Disable ECHO ports (Y) ?
Enable Encryption (N) ?
Enable Enhanced Password (N) ?
Disable SNMP
This setting allows you to disable the SNMP protocol on the unit for security reasons.
The default setting is N (No).
8: Setup Mode: Advanced Settings
Figure 8-2. Security Settings
Disable SNMP (N) ?
SNMP Community Name
The SNMP Community Name is a required field for NMS to read or write to a device.
Enter a string of 1 to 13 characters. The default setting is public.
SNMP Community Name (public):
The default entry is public. The current value is displayed in parentheses.
Disable Telnet Setup
Note: If you choose to disable this option, keep in mind that disabling both
Telnet Setup and Port 77FE will prevent users from accessing the setup
menu from the network.
This setting defaults to the N (No) option. The Y (Yes) option disables access to
Setup Mode by Telnet (port 9999). It only allows access locally using the web pages
and the serial port of the unit.
Disable Telnet Setup (N) ?
Disable TFTP Firmware Update
This setting defaults to the N (No) option. The Y (Yes) option disab les t he use of
TFTP to perform network firmware upgrades. With this option, you can download
firmware upgrades over the serial port using DeviceInstaller’s Recover Firmware
procedure. (See 9: Firmware Upgrades.)
Disable TFTP Firmware Update (N) :
SDS1101/2101 User Guide 61
Disable Port 77FE (Hex)
Note: If you choose to disable this option, keep in mind that disabling both
Telnet Setup and Port 77FE will prevent users from accessing the setup
menu from the network.
Port 77FE is a setting that allows DeviceInstaller, Web-Manager, and custom
programs to configure the unit remotely. You may wish to disable this capability for
security purposes.
Disable Port 77FEh (N) ?
The default setting is the N (No) option, which enables remote configuration. You can
configure the unit by using DeviceInstaller, web pages, Telnet, or serial configuration.
The Y (Yes) option disables remote configuration and web sites.
Disable Web Server
This setting defaults to the N (No) option. The Y (Yes) option disables the web
server.
Disable Web Server (N) ?
8: Setup Mode: Advanced Settings
Disable Web Setup
The Y (Yes) option disables configuration using the Web-Manager. This setting
defaults to the N (No) option.
Disable Web Setup (N) ?
Disable ECHO Ports
This setting controls whether port 7 echoes characters it receives. The default setting
is Y (Yes), which disables ECHO ports.
Disable ECHO ports (Y) ?
Enable Enhanced Password
This setting defaults to the N (No) option, which allows you to set a 4-character
password that protects Setup Mode by means of Telnet and web pages. The Y (Yes)
option allows you to set an extended security password of 16-characters for
protecting Telnet and Web Page access.
Enable Enhanced Password (N) ?
Enable Encryption
Rijndael is the block cipher algorithm chosen by the National Institute of Science and
Technology (NIST) as the Advanced Encryption Standard (AES) to be used by the
US government. The SDS supports 128-, 192-, and 256-bit encryption key lengths.
NOTE: Configuring encryption should be done through a local connection to
the serial port of the SDS, or via a secured network connection. Initial
SDS1101/2101 User Guide 62
8: Setup Mode: Advanced Settings
configuration information including the encryption key are sent in clear text
over the network.
To configure AES encryption on the SDS:
Figure 8-3. Encryption Keys
1. When prompted to enable encryption, press Y.
2. Enter the encryption key length when prompted. The SDS supports 128-, 192-,
and 256-bit encryption key lengths.
3. When prompted to change keys, press Y.
4. At the Enter Keys prompts, enter your encryption key. The encryption keys are
entered in hexadecimal. The hexadecimal values are echoed as asterisks to
prevent onlookers from seeing the key. Hexadecimal values are 0-9 and A-F.
For a 128-bit key length, enter 32 hexadecimal characters.
For a 192-bit key length, enter 48 hexadecimal characters.
For a 256-bit key length, enter 64 hexadecimal characters
5. Continue pressing Enter until you return to the Change Setup menu.
6. At the Change Setup menu, select option 9 to save and exit.
Encryption only applies to the port selected for data tunneling (default 10001),
regardless of whether you are using TCP or UDP.
Generally, one of these situations applies:
Encrypted SDS-to-SDS communication. Be sure to configure both SDS
devices with the same encryption key.
Third-party application to SDS-encrypted communication: SDS uses standard
AES encryption protocols. To communicate successfully, products and
applications on the peer side must use the same protocols and the same
encryption key as the SDS. Developers can license the Lantronix Encryption
Library suite.
Lantronix Secure Com Port Redirector provides an encrypted connection from
Windows-based applications to the SDS. A 30-day trial version of SCPR is
included on the CD.
NOTE: For more information about the Lantronix Encryption Library Suite
C0 (always accept incoming connection; no active
Hostlist retry counter
3
Start character for serial channel 1
0x0D (CR)
Baudrate
9600
I/F Mode
4C (1 stop bit, no parity, 8 bit, RS-232C)
Connect Mode
C0 (always accept incoming connection; no active
Hostlist retry counter
3
Hostlist retry timeout
250 (msec)
All other parameters
0
ARP Cache timeout in s
600
Disable Monitor Mode @ bootup
No
Default Settings (Option 7 )
Select 7 to reset the unit’s Channel 1 configuration and expert settings to the default
settings. The server configuration settings for IP address, gateway IP address, and
netmask remain unchanged. The configurable pins’ settings also remain unchanged.
The specific settings that this option changes are listed below:
You can obtain the most up-to-date firmware and release notes for the unit from the
Lantronix web site (
ftp.lantronix.com).
(
Reloading Firmware
There are several ways to update the unit's internal operational code (*.ROM): using
DeviceInstaller (the preferred way), using TFTP, or using the serial port. You can also
update the unit's internal Web interface (*.COB) using TFTP or DeviceInstaller.
Here are typical names for those files. Check the Lantronix web site for the latest
versions and release notes.
SDS1101_6102.rom SDS1101_webm_1404.cob
Please refer to the DeviceInstaller online Help for information about reloading
firmware using DeviceInstaller. The other methods are discussed below.
www.lantronix.com) or by using anonymous FTP
Table 9-1. Firmware Files
Using TFTP: Graphical User Interface
To download new firmware from a computer:
1. Use a TFTP client to send a binary file to the unit (*.ROM to upgrade the unit's
internal operational code and *.COB to upgrade its internal Web interface).
Note: TFTP requires the .ROM (binary) version of the unit's internal
operational code.
2. In the TFTP server field, enter the IP address of the unit being upgraded.
3. Select Upload operation and Binary format.
4. Enter the full path of the firmware file in the Local file name field.
5. In the Remote file name field, enter the current internal operational code (D3 for
SDS1101 or D4 for SDS2101) or WEB1 for the internal Web interface.
6. Click the Upload Now button to transfer the file to the unit.
SDS1101/2101 User Guide 66
9: Firmware Upgrades
Figure 9-1. TFTP Window
After the firmware has been loaded and stored (approximately 8 seconds to
complete) the unit performs a power reset.
Using TFTP: Command Line Interface
To download new firmware from a computer, enter the following from a TFTP
command line interface:
tftp –i <ip address> put <local filename> <destination file name>
The following examples demonstrate the TFTP command sequence to download the
.rom file and the .cob file:
SDS1101
tftp –i 192.168.1.111 put SDS1101_6102.rom D3
tftp –i 192.168.1.111 put SDS1101_webm_1404.cob WEB1
SDS2101
tftp –i 192.168.1.121 put SDS2101_6500.rom D4
tftp –i 192.168.1.121 put SDS2101_webm_1600.cob WEB1
Recovering the Firmware Using the Serial Port and DeviceInstaller
If for some reason the firmware is damaged, you can recover the firmware file by
using DeviceInstaller to download the *.ROM file over the serial port.
To recover firmware:
1. Start DeviceInstaller. If your PC has more than one network adapter, a message
displays. Select an adapter and click OK.
SDS1101/2101 User Guide 67
9: Firmware Upgrades
2. From the Tools menu, select Advanced/Recover Firmware. The Serial Port
Firmware Upgrade window displ a ys.
3. For Port on PC, enter the COM port on the PC that is connected to the serial
port of the Lantronix unit.
4. For Device Model, be sure the appropriate device (e.g. SDS1101)
displays.
5. For Firmware File, click the Browse button and go to the location where the
firmware file resides.
Note: Make sure the SDS1101/2101 on which you are recovering firmware is
connected to this selected port on your PC.
6. Click OK to download the file.
7. When prompted, reset the device. Status messages and a progress bar at the
bottom of the screen show the progress of the file transfer. When the file transfer
completes, the message “Successful, Click OK to Close” displays.
8. Click the OK button to complete this procedure.
SDS1101/2101 User Guide 68
1100:: MMoonniittoorr MMooddee
Monitor Mode is a command-line interface used for diagnostic purposes.
There are two ways to enter Monitor Mode: locally using the serial port or remotely
using the network.
Entering Monitor Mode Using the Serial Port
To enter Monitor Mode locally:
1. Follow the same steps used for setting the serial configuration parameters
(see Serial Port).
2. Instead of typing three x keys, however:
a) Type zzz (or xx1) to enter Monitor Mode with network connections.
b) Type yyy (or yy1) to enter Monitor Mode without network connections.
A 0> prompt indicates that you have successfully entered Monitor Mode.
Entering Monitor Mode Using the Network Port
To enter Monitor Mode using a Telnet connection:
1. Establish a Telnet session to the configuration port (9999). The following is an
example of the message that appears:
2. Type M (upper case) immediately.
A 0> prompt indicates that you have successfully entered Monitor Mode.
Monitor Mode Commands
The following commands are available in Monitor Mode. Many commands have an IP
address as an optional parameter (xxx.xxx.xxx.xxx). If you enter the IP address, the
command is applied to another unit with that IP address. If you do not enter the IP
address, the command is executed locally.
Note: All commands must be in capital letters.Responses to some of the
commands are in Intel Hex format.
SDS1101/2101 User Guide 69
10: Monitor Mode
Command
Command Name
Function
AT
ARP Table
Shows the unit’s ARP table entries.
TT
TCP Connection Table
Shows all incoming and outgoing TCP connections.
NC
Network Connection
Shows the unit’s IP configuration.
RS
Reset
Resets the unit’s power.
SS
Set Security record
Sets the Security record without the encryption key and
NS
Network Status
Reports the network interfaces ’ status es. Inc lud es pote ntia lly
Response
Meaning
0>
OK; no error
1>
No answer from remote device
8>
Wrong parameter(s)
9>
Invalid command
Table 10-1. Monitor M ode Commands
VS x.x.x.x Version Queries software header record (16 bytes) of unit with IP
address x.x.x.x.
GC x.x.x.x Get Configuration Gets configuration of unit with IP address x.x.x.x as hex
records (120 bytes).
SC x.x.x.x Send Configuration Sets configuration of unit with IP address x.x.x.x from hex
records.
PI x.x.x.x Ping Pings unit with IP address x.x.x.x to check device status.
QU Quit Exits diagnostics mode.
G0, G1, ....,Ge, Gf Get configuration from
memory page
S0, S1,...,Se, Sf Set configuration to
memory page
GM Get MAC address Shows the unit's 6-byte MAC address.
Gets a memory page of configuration information from the
device.
Sets a memory page of configuration information on the
device.
length parameters. The entire record must still be written, but
the encryption-specific bytes do not need to be provided
(they can be null since they are not overwr itten).
negotiated parameters like speed/duplex for Ethernet or
BSSID, encryption, authentication for wireless interfaces.
Note: Entering any of the commands listed above generates one of the
This chapter discusses how you can diagnose and fix errors quickly without having to
contact a dealer or Lantronix. It helps to connect a terminal to the serial port while
diagnosing an error to view summary messages that may display. When
troubleshooting, always ensure that the physical connections (power cable, network
cable, and serial cable) are secure.
Note: Some unexplained errors might be caused by duplicate IP addresses on the
network. Make sure that your unit's IP address is unique.
When troubleshooting the following problems, make sure that the SDS is powered
up. Confirm that you are using a good network connection.
SDS1101 LEDs
The SDS1101 has the following LEDs, which help you diagnose problems.
Power LED (green)
Ethernet 10/100 Link (yellow = 10 Mb/green = 100 Mb)
Ethernet Half/Full Duplex Activity (yellow = Half Duplex/green = Full Duplex)
Diagnostic (red)
Status (green)
Simultaneously lit Diagnostic (red) and Status (green) LEDs mean something is
wrong. If the Diagnostic LED is lit or blinking, count the number of times the Status
LED blinks between its pauses. The following table explains the LED functions:
Table 11-1. SDS1101 LEDs
Network controller error ON Blinks 3x/4 seconds
Serial number storage
checksum error
Duplicate IP address present ON Blinks 5x/4 seconds
No DHCP response Blinks 2x/second Blinks 5x/4 seconds
Setup menu active
SDS1101/2101 User Guide 71
ON Blinks 4x/4 seconds
Blinks 2x/second
Follows Diagnostic LED for 2
seconds, off for 2 seconds
SDS2101 LEDs
LEDs
Meaning
Off = No data activity
Off = No data activity
Off = No data activity
Problem/Message
Reason
Solution
When you issue the ARP –S
Your currently logged-in
Have someone from your IT
The following LEDs are on the top of the SDS2101:
Power / Diagnostic (Blue)
RX Serial 1 Activity LED (Green)
TX Serial 1 Activity LED (Yellow)
RX Serial 2 Activity LED (Green)
The following LEDs are on the RJ45 Ethernet connector:
Ethernet Link LED on the left (Bi-color, 10Mbps = Yellow, 100 Mbps = Green)
Ethernet Activities LED on the right (Bi-color, Half Duplex = Yello w , Full Duplex =
Green)
Power/Diagnostic (Blue)
11: Troubleshooting and Contact Information
TX Serial 2 Activity LED (Yellow)
Table 11-2. SDS2101 LEDs
Steady On = Power OK
Blinking 2x = No DHCP response
Blinking 2x = Setup Menu active
RX Serial 1 Activity LED (Green)
TX Serial 1 Activity LED (Yellow)
RX Serial 2 Activity LED (Green)
TX Serial 2 Activity LED (Yellow)
Ethernet Link LED on the left (Bi-color)
Ethernet Activity LED on the right (Bi-color)
Problems and Error Messages
Table 11-3. Problems and Error Messages
Blinking = Data being received by SDS2101 on channel 1
Off = No data activity
Blinking = data being transmitted from SDS2101 on channel 1
Blinking = data being received by SDS2101 on chan nel 2
Blinking = Data being transmitted from SDS2101 on channel 2
Off = No Ethernet link established
Solid Yellow = 10Mbps Ethernet link established
Solid Green = 100 Mbps Ethernet Link established
Off = No data activity
Blinking Yellow = Half Duplex data activity
Blinking Green = Full Duplex data activity
command in Windows, the "ARP
entry addition failed: 5" message
displays.
SDS1101/2101 User Guide 72
user does not have the
correct rights to use this
command on this PC.
department log you in with sufficient
rights.
11: Troubleshooting and Contact Information
Problem/Message
Reason
Solution
When you attempt to assign an IP
When you Telnet to port 1
Telnet back to Port 1. Wait for it to
When you Telnet to port 9999, the
You did not press Enter
Telnet to port 9999 again, but press
When you Telnet to port 1 to
You may have entered the
Confirm that the Ethernet address
The IP address you are
Confirm that your PC has an IP
The device server may not
Make sure that the Link LED is lit. If
The device server is not
The most likely reason is
The serial settings for the serial
address to the unit by the ARP
method, the "Press Enter to go into
Setup Mode" error "(described
below) message displays. Now
when you Telnet to the device
server, the connection fails.
"Press Enter to go into Setup
Mode" message displays.
However, nothing happens when
you press Enter, or your
connection is closed.
assign an IP address to the device
server, the Telnet window does not
respond for a long time.
on the device server, you
are only assigning a
temporary IP address.
When you Telnet into port
9999 and do not press
Enter quickly, the device
server reboots, causing it
to lose the IP address.
quickly enough. You only
have 5 seconds to press
Enter before the
connection is closed.
Ethernet address
incorrectly with the ARP
command.
trying to assign is not on
your logical subnet.
fail, then Telnet to port 9999 again.
Make sure you press Enter quickly.
Enter as soon as you see the "Press
Enter to go into Setup Mode"
message.
that you entered with the ARP
command is correct. The Ethernet
address may only include numbers
0-9 and letters A-F. In Windows and
usually in Unix, the segments of the
Ethernet address are separated by
dashes. In some forms of Unix, the
Ethernet address is segmented with
colons.
address and that it is in the same
logical subnet that you are trying to
assign to the device server.
When you try to assign an IP with
DeviceInstaller, you get the
following :
"No response from device!
Verify the IP, Hardware
Address and Network Class.
Please try again."
communicating with the serial
device to which it is attached.
be plugged into the
network properly.
The cause is most likely
one of the following:
The hardware address you
specified is incorrect.
The IP address you are
trying to assign is not a
valid IP for your logical
subnet.
You did not choose the
correct subnet mask.
the wrong serial settings
were chosen.
the Link LED is not lit, then the
device server is not properly plugged
into the network.
Double-check the parameters that
you specified.
Note: You cannot assign an IP
address to a device server through a
router.
device and the device server must
match. The default serial settings for
the device server are RS-232, 9600
baud, 8 character bits, no parity, 1
stop bit, no flow control.
SDS1101/2101 User Guide 73
11: Troubleshooting and Contact Information
Problem/Message
Reason
Solution
When you try to enter the setup
The issue is most likely
Double-check everything in the
You can ping the device server,
There may be an IP
Turn the device server off and then
The device server appears to be
If you are sure that the
On SDS1101 you can check to see
mode on the device server using
the serial port, you get no
response.
but not Telnet to the device server
on port 9999.
With DeviceInstaller, you get the
Wrong Password error when you
try to upgrade the firmware.
set up correctly, but you are not
communicating with your device
attached to the device server
across the network.
something covered in the
previous problem, or
possibly, you have Caps
Lock on.
address conflict on your
network
You are not Telneting to
port 9999.
The Telnet configuration
port (9999) is disabled
within the device server
security settings.
The file you are attempting
to load is the incorrect
firmware file for the SDS.
serial port setting is
correct, then you may not
be connecting to the
correct socket of the
device server.
Another possibility is that
the device server is not set
up correctly to make a
good socket connection to
the network.
problem above. Confirm that Caps
Lock is not on.
issue the following commands at the
DOS prompt of your computer:
ARP -D X.X.X.X (X.X.X.X is the I P of
the device server).
PING X.X.X.X (X.X.X.X is the IP of
the device server).
If you get a response, then there is a
duplicate IP address on the network.
If you do not get a response, use the
serial port to verify that Telnet is not
disabled.
Download the correct firmware file
from the Lantronix website.
whether there is a socket connection
to or from the SDS by looking at the
Status LED.
If the Status LED is blinking
consistently, then there is a good
socket connection.
For SDS1101/2101, use the Conne ct
Mode option C0 for making a
connection to the SDS from the
network. Use Connect Mode option
C1 or C5 for a connection to the
network from the SDS.
When connecting to the WebManager within the device server,
the "No Connection With The
Device Server" message displ ay s.
Technical Support
If you are experiencing an error that is not described in this chapter, or if you are
unable to fix the error,you have the following options:
To check our online knowledge base or send a question to Technical Support, go to
http://www.lantronix.com/support.
SDS1101/2101 User Guide 74
Your computer is not able
to connect to port 30718
(77FEh) on the device
server.
Make sure that port 30718 (77FEh)
is not blocked with any router that
you are using on the network. Also,
make sure that port 77FEh is not
disabled within the Security settings
of the device server.
11: Troubleshooting and Contact Information
Technical Support Europe, Middle East, and Africa
Phone: +33 (0) 1 39 30 41 72
Email:
eu_techsupp@lantronix.com or eu_support@lantronix.com
Firmware downloads, FAQs, and the most up-to-date documentation are available at:
www.lantronix.com/support
When you report a problem, please provide the following information:
Your name, and your company name, address, and phone number
Lantronix model number
Lantronix MAC number
Software version (on the first screen shown when you T elnet to port 9999)
Description of the problem
Status of the unit when the problem occurred (please try to include information on
user and network activity at the time of the problem)
The SDS1101 has a female DCE DB25 serial port that supports RS-232 and RS485/422 serial standards (software selectable) up to 230 Kbaud.
Figure 12-1. Serial Interface
Serial Connector Pinouts
The unit’s female DB25 connector provides an RS-232C, RS-485, or RS-422 DCE
serial port. The default serial port settings are 9600 baud, 8 bits, no parit y, and 1 stop
bit.
When attaching the DB25 of the SDS1101 to the DB9 com port on a PC, use
a standard straight-through serial cable. The figure below shows the pinouts
for a DB25 to DB9 straight-through cable, often referred to as a "Modem
Cable".
To configure the SDS using the DB9 serial port, you need only pin out the
TXD, RXD, and GND signals.
SDS1101/2101 User Guide 77
12: SDS1101 Connections and Pinouts
Figure 12-5. Modem Cable
Network Port
The unit's back panel contains a power plug and an RJ45 (10/100) Ethernet port.
Figure 12-6. Network Interface
RJ45 Ethernet Port Power Plug
SDS1101/2101 User Guide 78
12: SDS1101 Connections and Pinouts
Ethernet Connector Pinouts
The SDS1101 supports 10/100 Mbps half or full duplex Ethernet through an RJ45
connector.
Figure 12-7. RJ45 Ethernet Connector
Power Plug
Power input on the power plug is 9 -30 VDC (center +) or 10-24 VAC
(1.5W maximum power required).
The SDS2101 has two male DB9 DTE serial ports that support RS-232C/RS-422 (4wire)/RS-485 (2-wire) serial standards up to 230 Kbps (and up to 921 Kbps if high
performance is selected).
Figure 13-1. Serial Interface
Male DB9 Serial Ports
Serial Connector Pinouts
The two Male DB9 DTE connectors provide an RS-232C/RS-422 (4-wire)/
RS-485 (2-wire) interface. The default serial port settings are 9600 baud, 8 bits, no
parity, 1 stop bit, no flow control.
Figure 13-2. DB9 Male RS232 Serial DTE Connector
SDS1101/2101 User Guide 80
Network Port
The unit's back panel contains a 9-30VDC power plug and an RJ45 (10/100)
Ethernet port.
RJ45 Ethernet Port Reset Button Power Plug
Reset Button
You can reset the unit to factory defaults, including clearing the network settings (IP
address, gateway, and netmask are set to 00s).
13: SDS2101 Connections and Pinouts
Figure 13-3. Network Interface
To reset the unit to factory defaults:
1. Place the end of a paper clip or similar object into the reset opening and press for
a minimum of 3 seconds.
2. Release the button and remove the paper clip. The firmware restores factory
default settings to the configuration and invokes a reset (internally).
Ethernet Connector Pinouts
Power Plug
Power input on the power plug is 9-30 VDC (center +)
(1.8W maximum power).
SDS1101/2101 User Guide 81
Category
Description
Internal CPU Memory
256 KB zero wait state SRAM
Flash
2 MB Flash
EEPROM
2 KB EEPROM
Serial Line Formats
Characters: 7 or 8 data bits
Flow Control
Hardware: CTS/RTS
Power Input
9-30 VDC or 9-24 VAC on barrel connector (1.5 Watts maximum consumption)
Note: Operating range for SDS1101-IAP only: -40° to 70° C (-40° to 158° F)
Storage -40° to 85° C (-40 to 185° F)
Relative Humidity Operating 10% to 90% non-condensing, 40% to 60% recommended
Storage 10% to 90% non-condensing
Case Metal enclosure with integrated wall mounts
Optional 35 mm Din Rail mount available
Protocols Supported ARP, UDP/IP, TCP/IP, Telnet, ICMP, SNMP, DHCP, BOOTP, TFTP, and HTTP
Installable Industrial
Protocols
Management Internal web server
ModBus TCP, ModBus ASCII/RTU, DF1 Multi-Master (IAP version only)
Earlier chapters describe how to assign a static IP address using DeviceInstaller,
Web Manager, and Setup Mode (through a Telnet or serial connection). This section
covers other methods for assigning an IP address over the network.
DHCP
The unit ships with a default IP address of 0.0.0.0, which automatically enables
DHCP. If a DHCP server exists on the network, it provides the unit with an
IP address, gateway address, and subnet mask when the unit boots up.
You can use the DeviceInstaller software to search the network for the DHCPassigned IP address and add it to the list of devices retrieved.
Note: This DHCP address does not appear in the unit ’s Setup Mode or in
Web Manager. You can determine your unit’s DHCP-ass igned IP addres s in
Monitor Mode. When you enter Monitor Mode from t he serial port with
network connection enabled and issue the NC (Network Communication)
command, you see the unit’s IP configuration.
AutoIP
The unit ships with a default IP address of 0.0.0.0, which automatically enables
Auto IP within the unit. AutoIP is an alternative to DHCP that allows hosts to obtain
an IP address automatically in smaller networks that may not have a DHCP server. A
range of IP addresses (from 169.254.0.1 to 169.254.255.1) has been explicitly
reserved for AutoIP-enabled devices. Do not use this range of Auto IP addresses
over the Internet.
If your unit cannot find a DHCP server, and you have not manually assigned an
IP address to it, the unit automatically selects an address from the AutoIP
reserved range. Then, your unit sends out a (ARP) request to other nodes on
the same network to see whether the selected address is being used.
If the selected address is not in use, then the unit uses it for local subnet
communication.
If another device is using the selected IP address, the unit selects another
address from the AutoIP range and reboots. After reboot, the unit sends out
another ARP request to see if the selected address is in use, and so on.
AutoIP does not replace DHCP. The unit continues to look for a DHCP server on the
network. If it finds a DHCP server, the unit switches to the DHCP server-provided
address and reboots.
Note: If a DHCP server is found, but it denies the request for an IP address,
the unit does not attach to the network, but waits and retries.
AutoIP can be disabled by setting the unit’s IP address to 0.0.1.0. This setting
enables DHCP but disables AutoIP.
SDS1101/2101 User Guide 87
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 (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.
A: Alternative Ways to Assign an IP Address
arp -s 191.12.3.77 00:20:4a:xx:xx:xx (Unix)
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.
Many of the unit’s configuration procedures require assembling a series of options
(represented as bits) into a complete command (represented as a byte). Convert the
resulting binary value to a hexadecimal representation.
Converting Binary to Hexadecimal
Following are two simple ways to convert binary numbers to hexadecimals.
Conversion Table
Hexadecimal digits have values ranging from 0 to F, which are represented as 0-9, A
(for 10), B (for 11), etc. To convert a binary value (for example, 0100 1100) to a
hexadecimal representation, the upper and lower four bits are treated separately,
resulting in a two-digit hexadecimal number (in this case, 4C). Use the following table
to convert values from binary to hexadecimal.
1 0001 1
2 0010 2
8 1000 8
9 1001 9
14 1110 E
15 1111 F
SDS1101/2101 User Guide 89
Scientific Calculator
Another simple way to convert binary to hexadecimals is to use a scientific calculator,
such as the one available on Windows’ operating systems. For example:
1. On the Windows’ Start menu, click ProgramsAccessoriesCalculator.
2. On the View menu, select Scientific. The scientific calculator displays.
3. Select Bin (Binary), and type the number to convert.
B: Binary to Hexadecimal Conversions
4. Click Hex. The hexadecimal value displays.
SDS1101/2101 User Guide 90
CC:: WWaarrrraannttyy
For details on the Lantronix warranty replacement policy, please go to our Web site
Product Name Model: SDS1101 and SDS2101 Device Servers
Conforms to the following standards or other normative documents:
Safety
UL 60950-1
CSA 22.2. No 60950-1-03
EN 60950-1
TUV
VCCI
C-TICK
Electromagnetic Emissions
FCC Part 15 Subpart B Class A
ICES-003 Issue 4 February 2004 Class A
AS/NZS CISPR 22: 2004 Class A
EN55022: 1998 + A1: 2000 + A2: 2003 CLASS A
EN61000-3-2: 2000 Class A
EN61000-3-3: 1995 +A1: 2001
VCCI
V-3/2006.04 Class A (SDS2101 only)
All Lantronix products in the following families are China RoHS-compliant and free of the following hazardous substances and
elements:
•
•
•
•
•
•
(Pb)
O: toxic or hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement in SJ/T11363-2006.
X: toxic or hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement in SJ/T11363-2006.
(Hg)
(Cd)
Chromium
biphenyls (PBB)
ethers (PBDE)
Disclaimer and Supplementary Information
This product has been designed to comply with the limits for a Class A digital device
pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable
protection against such interference when operating in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy, and if not installed
and used in accordance with this guide, may cause harmful interference to radio
communications. Operation of this equipment of this equipment in a residential area is
likely to cause harmful interference in which case the user will be required to correct the
interference at user own expense.
This Class A digital apparatus complies with Canadian ICES-003
Cet appareil num′erique de la classe A est conforme à la norme NMB-003 du Canada.
The product complies with the requirements of the Low Voltage Directive 72/23/EEC and
the EMC Directive 89/336/EEC.
Encryption: This product includes AES encryption certified by the National Institute of
Standard and Technology to FIPS-197 standard certification #120.
Export Control Classification Number 5A002, License exception ENC.
Changes or modifications to this device not explicitly approved by Lantronix will void the
user's authority to operate this device. The information in this guide may change without
notice. The manufacturer assumes no responsibility for any errors that may appear in this
guide.
SDS1101/2101 User Guide 93
Manufacturer’s Contact
167 Technology Drive
Irvine, CA 92618 USA
Toll Free: 800-526-8766
Phone: 949-453-3990
Fax: 949-450-7249