Lantronix MSS1-T Reference Manual Download

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Introduction

1.1 RS-485 Networking Overview ...................................................................... 1-2

1.1.1 RS-485 Protocols ......................................................................... 1-2

1.1.2 Two-wire Mode.......................................................................... 1-2

1.1.3 Four-wire Mode ......................................................................... 1-2

1.2 Terms ................................................................................................................ 1-3

1.3 Protocols ........................................................................................................... 1-4

1.4 Software............................................................................................................ 1-4

1.5 Configuration .................................................................................................. 1-5

Summary of Contents for MSS1-T

Page 1: ...MSS Reference Manual For Lantronix MSS1 T MSS1 T2 and MSS485 Micro Serial Servers...

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Page 3: ...cols 1 4 1 4 Software 1 4 1 5 Configuration 1 5 2 Installation 2 1 MSS1 Components 2 1 2 2 MSS485 Components 2 2 2 3 Installation 2 4 2 3 1 Power up Diagnostics 2 6 2 4 Is It Working 2 7 3 Getting Sta...

Page 4: ...2 4 3 Protocol Configuration 4 2 4 3 1 IP Configuration 4 2 4 3 2 IPX Configuration 4 4 4 3 3 LAT Configuration 4 5 4 4 Serial Port Configuration 4 6 4 4 1 Access Mode 4 6 4 4 2 Baud Rate 4 6 4 4 3 P...

Page 5: ...ssion Control 5 3 5 2 2 Outgoing Connections 5 5 5 2 3 Status Displays 5 6 5 3 Emulating a Direct Serial Connection 5 8 5 4 Multihost Mode 5 9 6 Commands A Technical Support B Troubleshooting C Pinout...

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Page 7: ...1 Introduction 1 1 RS 485 Networking Overview 1 2 1 1 1 RS 485 Protocols 1 2 1 1 2 Two wire Mode 1 2 1 1 3 Four wire Mode 1 2 1 2 Terms 1 3 1 3 Protocols 1 4 1 4 Software 1 4 1 5 Configuration 1 5...

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Page 9: ...485 networking Chapter 2 Installation explains how to install the MSS hardware and boot the server Chapter 3 Getting Started details different ways to log into the MSS and prepare the server for conf...

Page 10: ...f duplex one pair of wires shares transmit and receive signals and an optional third wire can be used for shield ground The main advantage of using two wire mode is reduced cabling costs Figure 1 1 Ex...

Page 11: ...term host is generally used to denote interactive computers or computers that people can log into Node Any intelligent device directly connected to the Ethernet network such as a host a printer or a...

Page 12: ...nformation from and control other nodes on a local area network LAN and respond to queries from other network hosts The MSS allows configuration of one community name with read write access IPX SPX Ne...

Page 13: ...it work properly with no additional configuration required TCP IP users must give the unit an IP address NOTE For more information about methods used to configure an IP address see page 3 1 Lantronix...

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Page 15: ...2 Installation 2 1 MSS1 Components 2 1 2 2 MSS485 Components 2 2 2 3 Installation 2 4 2 3 1 Power up Diagnostics 2 6 2 4 Is It Working 2 7...

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Page 17: ...MSS1 Rear Panel NOTE When the reset button is pressed and held during the power up and boot procedures the MSS returns to its factory default configuration The MSS1 T2 can autosense which Ethernet int...

Page 18: ...e MSS485 front panel has a screw terminal block and an RJ45 port for an RS 485 serial connection as well as an RS 232 DB9 console port Figure 2 4 MSS485 Front Panel The screw terminal block and RJ45 c...

Page 19: ...ns are part of the normal operation of the MSS and are not necessarily indicative of errors or dangerous operation The top of the MSS485 also contains an oval shaped hole in the lower left corner The...

Page 20: ...tails 2 Connect the MSS to a serial device MSS1 or an RS485 network MSS485 The MSS1 is designed to connect to an RS232 based serial device Connect one end of a serial cable to the DB25 connector on th...

Page 21: ...k of the MSS The MSS1 T2 can also be connected to a 10BASE2 Ethernet network Connect a 10BASE2 thin coaxial cable to the BNC connector on the back of the MSS Also attach a valid network terminator if...

Page 22: ...wer to the MSS Attach one end of the power cable to the MSS and plug the other end into a wall outlet There is no power switch on the MSS power will come on automatically when the unit is plugged in A...

Page 23: ...ted on the Ethernet port the OK LED blinks yellow The Serial LED blinks red when characters are transmitted through the serial port green when characters are received and yellow when characters are bo...

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Page 25: ...try and the Ping Command 3 2 3 1 3 Using the Serial Console 3 3 3 2 Incoming Logins 3 3 3 2 1 Controlling Incoming Logins 3 3 3 2 2 EZWebCon Login and Configuration 3 3 3 2 3 Other Incoming TCP IP Log...

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Page 27: ...n page 4 1 Only one person at a time may be logged into the remote console port regardless of the protocol being used This eliminates the possibility of several people simulta neously attempting to co...

Page 28: ...her node is using the specified address If no duplicate is found the server will use the IP address and will respond to the ping packet The MSS will not save the learned IP address permanently this pr...

Page 29: ...ncoming Logins Incoming Telnet logins are enabled by default and incoming LAT logins are disabled This behavior can be changed with the Change Incoming command and one of the following parameters Teln...

Page 30: ...AT host use the command below and substitute the last six bytes of the MSS hardware address for xxxxxx Figure 3 5 LAT Login 3 3 Serial Port Logins One way to connect to the MSS is to attach a terminal...

Page 31: ...To connect to the remote console port use the Telnet command followed by the MSS s IP address and the remote console port number Figure 3 6 Connecting to the Console Port 3 5 Logout To manually log ou...

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Page 33: ...nfiguration 4 2 4 3 2 IPX Configuration 4 4 4 3 3 LAT Configuration 4 5 4 4 Serial Port Configuration 4 6 4 4 1 Access Mode 4 6 4 4 2 Baud Rate 4 6 4 4 3 Parity Character Size and Stop Bits 4 6 4 4 4...

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Page 35: ...eset button while cycling power on the unit or enter the Initialize Factory command at the Local prompt 4 2 System Passwords There are two important passwords for the MSS the privileged password and t...

Page 36: ...subnetworks you will need to create a custom subnet mask the default subnet mask will not be correct for your network Use the Change Subnet Mask command Figure 4 4 Setting the Subnet Mask 4 3 1 2 Gate...

Page 37: ...lution such as Telnet Rlogin and Ping To set the default enter the Change Domain command followed by the desired domain name in quotes Figure 4 7 Configuring the Default Domain 4 3 1 4 IP Security IP...

Page 38: ...t v2 802 3 Native mode 802 2 and 802 2 SNAP encapsulation types Figure 4 9 displays an example routing and encapsulation configuration The 802 3 Native mode and 802 2 SNAP frame types are enabled whil...

Page 39: ...ection for example a modem The MSS serial port and the services on the network each belong to one or more service groups When a user or device requests a connection to a service the LAT host will chec...

Page 40: ...ed or baud rate to use for the serial connection Valid baud rates for the MSS are 300 600 1200 2400 4800 9600 the default 19200 38400 57600 and 115200 baud The baud rate can be changed with the Change...

Page 41: ...odem Signalling NOTE Modem and Modem Signalling features are not available on the MSS485 The following section details some of the MSS modem settings and modem signalling parameters These options are...

Page 42: ...l DTRwait use the Change DTRwait command Figure 4 21 Enabling DTRwait The MSS will assert DTR when a connection begins and de assert DTR when the connection ends 4 4 5 4 DSRlogout When a device connec...

Page 43: ...change connection characteristics See the Change Dedicated command on page 6 6 for more information NOTE Because dedicated connections leave no easy way to log into the server configuring the MSS s s...

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Page 45: ...tions 5 1 5 1 2 LAT Connections 5 2 5 1 3 Host Applications 5 3 5 1 4 Code Examples 5 3 5 2 Interactive Connections 5 3 5 2 1 Session Control 5 3 5 2 2 Outgoing Connections 5 5 5 2 3 Status Displays 5...

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Page 47: ...ocket Connections Each node on a network has a node address and each node address can allow connections on one or more sockets Sometimes these sockets are referred to as ports TCP IP and IPX connectio...

Page 48: ...lication port using the host s LATCP program in Figure 5 3 LTAnnnn represents any unused LAT port number Map the application port to the MSS by specifying the MSS node name and the serial port name En...

Page 49: ...et to the remote console port instead Only one serial port connection is allowed at a time Timing and serial signals are not preserved 5 1 4 Code Examples The MSS distribution CD ROM includes examples...

Page 50: ...ode and connects to host Duff After working he breaks and connects to host Conan His session list shown with the Show Session command would be 1 Thor 2 Duff 3 Conan In the example Conan is the current...

Page 51: ...a remote host as if he or she were a local user For example Figure 5 10 Connecting with Rlogin A user s MSS username the name used for login to the MSS becomes the login name for the remote host Unles...

Page 52: ...o a Specific Port NOTE If the information supplied in the command is incorrect or if there is no such ser vice on the specified host or port the connection will be refused If the MSS has been configur...

Page 53: ...and startup files are also displayed 5 2 3 7 Show Server Characteristics This command displays network related server identification information including the MSS s hardware address node address IP a...

Page 54: ...t is booted Similarly the commands for mss_b ensure that it is always available to accept connections from mss_a When the UDP protocol is used there is no connection Each MSS must be told explicitly w...

Page 55: ...ist can include up to 8 host entries in any combination of LAT SPX Telnet Rlogin and UDP addresses For more information about formatting host list entries see the Host command on page 6 28 Figure 5 16...

Page 56: ...a host s flow control blocks the MSS from sending the MSS will not send any serial data to that host but it will send the data to the other hosts in the host list The MSS consults all hosts each time...

Page 57: ...Charsize 6 6 6 11 Change Dedicated 6 6 6 12 Change Domain 6 8 6 13 Change DSRlogout 6 8 6 14 Change DTRwait 6 8 6 15 Change Flow Control 6 9 6 16 Change Forward Switch 6 9 6 17 Change Gateway 6 10 6 1...

Page 58: ...Change Password Limit 6 19 6 40 Change Password Protect 6 19 6 41 Change Portname 6 19 6 42 Change Preferred 6 20 6 43 Change Privpass 6 21 6 44 Change RARP 6 21 6 45 Change Retransmit Limit 6 21 6 4...

Page 59: ...0 Netstat 6 30 6 71 Ping 6 31 6 72 Resume 6 31 6 73 Rlogin 6 31 6 74 Set Privileged 6 32 6 75 Show IPsecurity 6 32 6 76 Show Hostlist 6 32 6 77 Show NetWare 6 32 6 78 Show Nodes 6 33 6 79 Show Ports 6...

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Page 61: ...curly braces you must choose one and only one of the items within each set of braces to com plete the command Parameters that appear in brackets are optional If more than one parameter appears in a si...

Page 62: ...eletes the character before the cursor Ctrl A Toggles insertion mode insert or overstrike Ctrl D Logs out of the server Ctrl E Moves cursor to end of line Ctrl H or Backspace Moves cursor to beginning...

Page 63: ...rt to initiate and receive connections Defaults Dynamic See Also Change Autobaud page 6 3 6 4 Change Autobaud Allows the port to detect the baud rate used for an incoming connection and then change it...

Page 64: ...isabled 6 6 Change Backward Switch Defines a key that will switch the user to a previous session without entering local mode From local mode the key functions as if the Backward command was entered An...

Page 65: ...emote Tells the MSS to ignore the Break key and pass it to the remote host None Disables the Break key Default None See Also Change Local Switch page 6 14 6 9 Change Buffering Specifies the size of th...

Page 66: ...Upon exiting the remote host the user is logged out of the MSS Restrictions Requires privileged user status There can only be one dedicated service configured at a single time Errors Defining the MSS...

Page 67: ...a numeric IP address envString Add the desired TCP or LAT environment keys Options must be separated by colons Default Disabled Examples Local CHANGE DEDICATED TCP chimaera 2001T forms a raw Telnet co...

Page 68: ...from switching terminal lines to access other sessions Open connections will be closed before logout When modem control is enabled DSRlogout is implicitly enabled because the two features use the same...

Page 69: ...XONXOFF Software flow control is used Default XONXOFF 6 16 Change Forward Switch Defines a key that will switch the user to the next session without entering local mode From local mode the key functio...

Page 70: ...ess Specify a host using the numeric IP address format Specifying an IP address of 0 0 0 0 removes the previously defined gateway See Also Change Subnet Mask page 6 25 6 18 Change Inactive Logout Dete...

Page 71: ...6 10 6 20 Change Incoming Permits or denies incoming Telnet and LAT connections and enforces password protection The Show Server command shows the status of incoming connection parameters Restriction...

Page 72: ...ddress with 0 or 255 in any segment restricts all addresses in that range Default Disabled Examples Change IPsecurity 192 0 220 77 Disabled Restricts the single IP address from the table Change IPsecu...

Page 73: ...at identifies the MSS on LAT networks Restrictions Requires privileged user status Parameters identString A string of 40 characters or less Identification strings must be enclosed in quotes if they co...

Page 74: ...6 4 Change Forward Switch page 6 9 6 28 Change Loginpass Specifies the password used to log into the server from the serial port or the network The user will be prompted for a new password of no more...

Page 75: ...e information Restrictions Requires privileged user status Errors The server name must be unique to the network Parameters serverName A string of up to 16 characters Strings must be enclosed in quotes...

Page 76: ...2 frame type with NetWare SAPs Defaults Enabled all Internal routing enabled See Also Change NetWare Internal Network page 6 16 Change NetWare Routing page 6 17 Show NetWare page 6 32 6 33 Change NetW...

Page 77: ...t will be used The null string server the same function as the None parameter listed above See Also Change Software page 6 23 6 35 Change NetWare Routing If enabled allows the MSS to act as an interna...

Page 78: ...sflow Specifies whether XON XOFF characters will be stripped from the data stream This applies only when using XON XOFF flow control 6 38 Change Password Incoming Controls whether the MSS will ask use...

Page 79: ...ord Protect Controls whether a password is needed to log into the MSS from the serial port The Change Loginpass command is used to set the password Restrictions Requires privileged user status Default...

Page 80: ...no space separating the two See Change Dedicated on page 12 6 for more information hostname Enter a text host name or a numeric IP address SPX Specifies an SPX host for the preferred connection SAPna...

Page 81: ...ransmit Limit Specifies the number of retries attempted if a network message receives no acknowledgment This limit may have to be increased on especially noisy or heavily used networks Restrictions Re...

Page 82: ...milliseconds for the delay The range is 0 to 2 000 and is rounded to the nearest 10 milliseconds 6 49 Change Session Limit Limits the number of active sessions on the server s single port Restrictions...

Page 83: ...tring of up to 15 bytes See Also TCP IP page 1 4 6 53 Change Software Specifies the name of the download file the MSS will attempt to load at boot time when a reload has been requested For IP loadhost...

Page 84: ...roblem with the download you can still log into the server and determine what went wrong Restrictions Requires privileged user status Parameters host filename Used to load from a TCP IP host via TFTP...

Page 85: ...its Specifies how many stop bits the port will use Restrictions Requires privileged user status Default 1 See Also Change Autobaud page 6 3 Change Charsize page 6 6 Change Parity page 6 18 6 57 Change...

Page 86: ...string to the remote host Parameters termstring Enter a string of up to 16 characters The string is converted to all uppercase unless it is enclosed in quotes in the command None Clears the terminal t...

Page 87: ...ll not be displayed Restrictions An error is returned when the host cannot be accessed Parameters username Enter a username to display information about that particular MSS user hostname Enter a hostn...

Page 88: ...Enter the name of the desired LAT service Rlogin Adds an Rlogin host entry to the host table host Enter the IP address of the target host For TCP and UDP connections resolvable hostnames can be speci...

Page 89: ...alize Reboots the server When Reload or Factory Initialization takes place all user entered commands are lost the server must be reconfigured Restrictions Requires privileged user status Parameters De...

Page 90: ...AT session Multiple options must be separated by colons Examples Local LAT modem LD port5 6 69 Logout Port Logs out the serial port disconnecting any existing sessions Parameters number Enter a port n...

Page 91: ...Resume Leaves local mode and resumes the current most recently active session Errors An error is returned if there is no active session Parameters session Specify the number of the particular session...

Page 92: ...rrent port to become the privileged port the previous port loses the privilege Noprivilege Removes privileged status for the port See Also Change Privpass page 6 21 6 75 Show IPsecurity Displays the c...

Page 93: ...and DTR serial signals the access type and login status of the port and additional settings including baud rate parity and dedicated or preferred services 6 80 Show Server Displays different types of...

Page 94: ...without adding this parameter All services will be shown if no service is specified 6 82 Show Session Displays information about the serial port s current session s 6 83 Show SNMP Displays configured...

Page 95: ...can be no space between the hostname and the colon or between the colon and the environment string Parameters IPaddress Can be either a text name or an IP address This parameter is only optional if a...

Page 96: ...mand is entered test lines of 70 characters are sent to the serial port until a key is pressed Restrictions Nonprivileged users may only test their own port 6 88 Zero Rests all counters on the MSS bot...

Page 97: ...a problem please provide the following information Your name company name address and phone number Product name Unit serial number Software version issue the Show Server command Network configuration...

Page 98: ...n Reseller Sales 800 422 7015 North American Sales Fax 714 450 7232 Internet sales lantronix com International Sales 714 450 7227 International Sales Fax 714 450 7231 Internet intsales lantronix com T...

Page 99: ...ote the blinking LED and its color then contact your dealer or Lantronix Technical Support The MSS will not be operational until the fault is fixed The MSS completes its power up and boot procedures b...

Page 100: ...omplete pathname for the download file in the BOOTP configuration file Are the MSS and the host in the same IP network Some hosts do not allow BOOTP replies across IP networks For example if the MSS s...

Page 101: ...at the Boot prompt to configure the MSS These commands are a subset of the entire MSS command set For example a typical TCP IP configuration might use the following commands Figure B 1 BCP Command Exa...

Page 102: ...server from which the MSS will attempt to load the loadfile B 4 5 4 RARP ENABLED DISABLED Enables or disables the sending of RARP queries during the boot sequence It is enabled by default B 4 5 5 SECO...

Page 103: ...r incorrect modem configuration How ever the following items should be verified after any modem configuration and re checked when there is modem trouble The modem must disconnect immediately when DTR...

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Page 105: ...of the MSS485 DB9 connector Figure C 2 Pinout of DB9 Console Port C 3 RS 485 Connectors The MSS485 RJ45 and Screw Terminal Block RS 485 connectors are wired in parallel Only one of these ports can be...

Page 106: ...ing a valid connection In this case the modem s CD pin may be wired to the MSS s DSR pin Alternately many modems can be configured such that DSR acts like CD In this case the modem s DSR pin may be wi...

Page 107: ...on 4 2 Watts maximum D 2 Temperature Limitations Operating range 5 to 50 C 41 to 122 F Storage range 40 to 66 C 40 to 151 F Max temperature change hr 20 C 36 F NOTE Rapid temperature changes may affec...

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Page 109: ...se the username anonymous and enter your full email address as the password If the FTP server cannot verify the username or email address you will be denied access The machine that issues the FTP comm...

Page 110: ...ents of Flash ROM can be updated by downloading a new version of the operating software The MSS can be reloaded from network hosts using NetWare TCP IP or MOP Reloading instruc tions are given in the...

Page 111: ...ed with the code still in Flash ROM As noted in Chapter 2 the OK LED will blink quickly while the MSS is booting and reading code and then slowly when it returns to normal operation NOTE If you experi...

Page 112: ...Ethernet circuit then reload the server using the following command Figure E 5 Reloading Flash ROM from VMS E 3 Troubleshooting Flash ROM Updates Many of the problems that occur when updating Flash RO...

Page 113: ...MP 1 4 6 23 Configuration file 1 5 Configuration modem 4 7 Connections socket 5 1 Counters 5 7 6 36 D DB25 connector 2 1 2 2 C 1 Dedicated 5 8 Dedicated connections 5 8 6 6 Defaults restoring B 5 Disc...

Page 114: ...6 32 IPX NetWare 1 4 1 5 4 4 E 2 Node 4 4 IPX SPX 6 35 L Lantronix FTP server E 1 LAT 3 4 4 5 5 2 6 30 6 33 Circuit timer 6 12 Groups 6 13 Identification 6 13 LEDs 2 1 2 3 2 6 Link LED 2 1 2 3 Loadfil...

Page 115: ...ctor 2 1 2 2 Rlogin 1 5 3 4 4 3 5 5 6 21 6 31 Routing NetWare 4 4 6 17 RS 485 1 2 2 1 C 1 Four wire mode 1 2 Master 1 3 Protocols 1 2 Slave 1 3 Two wire mode 1 2 RTS CTS 4 7 S Serial connector 2 1 2 2...

Page 116: ...type 6 26 Test command 6 36 TFTP E 3 Timers Circuit 6 12 Inactivity 6 11 Troubleshooting Boot B 1 Error messages B 2 Flash ROM updates E 4 Modems B 5 Power up B 1 U UDP 1 4 5 8 6 7 Users 6 34 V Verifi...

Page 117: ...found 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 pro tection against such interference when operating in a...

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