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Ether232

Plus

 User Guide

 6 

System 

Settings

02-CML000057

Precidia Technologies Inc.

55

6.10Disable TCP Keep-Alives

This option can be enabled for bandwidth-sensitive applications. When enabled, the 
TCP connections affected include HTTP, Telnet, and protocol traffic. Keep-alive 
requests responded to include requests with a data length of zero (0).

I

MPORTANT

!  

By enabling this option, you are no longer able to detect dead connec-

tions and will hold the connections open. The default, and recommended setting for 
this option, is: <no>.

If it is necessary to change the 

Disable TCP keep-alives 

option:

1

Choose 

System Setting

 from the 

Device Settings

 menu.

2

Choose

 Disable TCP keep-alives

 from the

 System Settings 

sub-menu.

You are prompted to choose a 

Disable TCP keep-alives

 option, shown below: 

Setting the Disable TCP Keep-Alives

3

Type the letter that corresponds to the desired setting, then press 

Enter

.

TCP can send keep-alive messages to determine if the peer is still
responding.  Normally these are sent (every 4 minutes) on idle
connections.  Disabling keep-alives will prevent sending these
packets and make it impossible to detect dead connections.  It
is not recommended that you change this setting.
NOTE that the unit will always respond to keep-alive packets.

Do you wish to DISABLE the TCP keep-alive packets?

  A. yes              B. no

Choose desired setting or press ESC to cancel:

Содержание Ether232Plus

Страница 1: ...Ether232Plus User Guide Software Version 4 04 00 Document No 02 CML000057 Revision Date 15 MAR 04 Document Revision 2 0 www precidia com...

Страница 2: ...ecidia com Disclaimer and Confidentiality Notice The content of this document is furnished for informational use only is subject to change without notice and should not be construed as a commitment by...

Страница 3: ...uration 9 2 2 Setting Up the Terminal 10 2 3 Understanding the Configuration Screen 11 2 4 Timeout During Configuration 12 2 5 Resetting to Factory Default Configuration 13 3 Configuring the Ethernet...

Страница 4: ...e Access Password 41 Viewing the Access Password 41 Clearing the Access Password 42 5 6 SNMP Server 42 5 7 SNMP Settings 42 5 8 IPsec Tunnels 1 and 2 43 Protocol 44 Secure Address 45 SPI 46 Network Ad...

Страница 5: ...L000057 Precidia Technologies Inc iii Appendix A Glossary of Terms and Acronyms A 1 Appendix B Troubleshooting and Support B 1 Appendix C Specifications and Warranty C 1 Appendix D Connecting with Tel...

Страница 6: ...Table of Contents Ether232Plus User Guide iv Precidia Technologies Inc 02 CML000057...

Страница 7: ...4 Configuring the Serial Port Settings Configure the protocol speed connection control and port information 5 Configuring the Security Settings Configure the remote console and Web passwords SNMP and...

Страница 8: ...rver The figure below illustrates an example configuration of the Ether232PPlus in a network Ether232Plus Network Configuration Features The Ether232Plus has many useful features allowing you to Confi...

Страница 9: ...ains active COM Port Redirector Software compatibility using the Com Port Control protocol option Modem Connection Control that allows the Precidia unit to appear as a Hayes compatible modem to your s...

Страница 10: ...hen network conges tion results in collisions Collisions are resolved by the Ether net protocol and do not necessarily indicate data loss Lamp flashes to indicate this activity TRANSMIT Illuminates wh...

Страница 11: ...ecessed CONFIGURE button for several seconds to activate local configuration through the COM port ETHERNET Accepts RJ 45 connector for direct connection to 10BaseT Ethernet network NOTE If connecting...

Страница 12: ...configuration and one 1 RS 422 serial cable with an RJ 45 connector For RS 485 connections one 1 null modem serial cable for configuration and one 1 RS 485 serial cable with an RJ 45 connector IMPORTA...

Страница 13: ...ngs depending on your set up and the protocol you are using Ethernet Settings IP Address Subnet Mask Gateway These are the addressing information of the unit and the network Leave at zero if using a D...

Страница 14: ...1 Before You Start Ether232Plus User Guide 8 Precidia Technologies Inc 02 CML000057...

Страница 15: ...THERNET port of the unit 3 Connect the null modem cable to the COM port of the unit 4 Plug the power adapter into a power outlet 5 Connect the null modem cable to one of the COM ports on your PC 6 Fol...

Страница 16: ...s stan dard with Windows operating systems or Procomm Plus Symantec For further help on using Hyper Terminal please refer to our Help Guide Working With HyperTer minal at http www precidia com product...

Страница 17: ...g the Configuration Screen The left half of the Configuration screen displays the Device Settings menu and the right half of the screen displays the sub menu of the option you select Table 2 1 provide...

Страница 18: ...nfigure the local network information before the device is placed on a network so it does not cause a problem with the existing LAN or configure auto matically with a DHCP server 2 Serial Port Configu...

Страница 19: ...ll delete your previous configuration and revert all settings to factory default 1 Unplug the power cord from the back of the unit 2 Press and hold the recessed CONFIGURE button and plug the power cor...

Страница 20: ...2 Setting up the Ether232Plus Ether232Plus User Guide 14 Precidia Technologies Inc 02 CML000057...

Страница 21: ...enu appears on the right side of the Configuration screen as shown below NOTE Remember to save your changes by typing to exit configuration Precidia Ether232Plus Configuration v4 04 00 Device Settings...

Страница 22: ...automatically enables DHCP configuration If you are using a DHCP server leave all Ethernet Settings at zero 0 0 0 0 The settings will always appear as zeros in the menu regardless of the values assign...

Страница 23: ...rnet from the Device Settings menu 2 Choose Subnet Mask from the Ethernet Settings sub menu You are prompted to enter the subnet mask of the device 3 Type the subnet mask e g 255 255 255 0 at the prom...

Страница 24: ...atches this Network Address and the Network Mask it is forwarded to the second gateway address defined below To enter or change the Network Address 1 Choose Ethernet from the Device Settings menu 2 Ch...

Страница 25: ...be on the same subnet as the device To enter or change the Gateway 1 Choose Ethernet from the Device Settings menu 2 Choose Gateway under Additional Gateway from the Ethernet Settings sub menu You are...

Страница 26: ...3 Configuring the Ethernet Settings Ether232Plus User Guide 20 Precidia Technologies Inc 02 CML000057...

Страница 27: ...otocol option first NOTE Remember to save your changes by typing to exit configuration Precidia Ether232Plus Configuration v4 04 00 Device Settings Serial Port Settings 1 Ethernet 0 0 0 0 A Protocol T...

Страница 28: ...om the message and sets the following parameters of the serial port baud rate data length parity bits stop bits DTR signal often used to disconnect a call and flow control Once the serial port is set...

Страница 29: ...te IP address and Remote Port Telnet Server To create a telnet server select tcp server as the session mode when configuring this protocol The Ether232Plus lis tens on port 23 and the Remote Password...

Страница 30: ...1 Any zeroes after the first terminator are ignored Table 4 2 Session Mode Options Menu Item Description tcp tunnel Typical configuration for most applications Use tcp tunnel mode when the Ether232Pl...

Страница 31: ...ntrol NOTE To avoid data loss choose hardware flow control if you set the port speed to 19 200 bps or higher udp Similar to tcp tunnel mode use UDP mode when reception acknowledgement of the data pack...

Страница 32: ...data as fast as it is received from the Ether232Plus the remote end negates CTS and the Ether232Plus suspends data transfer When the remote end is ready for more data it asserts CTS again When the Eth...

Страница 33: ...Port configurations of 9 12 or 13 bits are automatically converted by adding an extra stop bit to 9 bit transfers and dropping stop bits and parity bits if necessary from 12 and 13 bit transfers 4 3 P...

Страница 34: ...otocol connection to the status of the network Ethernet Attempts to keep the connection permanently open DTR DSR Control Uses the DTR DSR lines to open and close connections In tcp client mode the Eth...

Страница 35: ...re effective to set it yourself If the terminal type is incorrect the full screen telnet applications will not work properly To enter or change the Terminal Type Telnet only 1 Choose Serial Port from...

Страница 36: ...the Serial Port Settings sub menu You are prompted to enter the port number on the local system 3 Type the port number at the prompt and press Enter 4 7 Remote IP Remote IP is the IP address of the r...

Страница 37: ...s sub menu You are prompted to enter the port number on the remote system 3 Type the remote port number at the prompt and press Enter 4 9 Fallback IP Fallback IP is the IP address of the machine the u...

Страница 38: ...avoid using reserved port numbers NOTE If the session mode is set to udp this option is ignored To enter or change the Fallback Port 1 Choose Serial Port from the Device Settings menu Table 4 5 Fallba...

Страница 39: ...must be specified in their ASCII decimal form For example Carriage Return is entered as 13 The most common terminators are listed in Table 4 6 NOTE To use zero null as a terminator you must set it as...

Страница 40: ...s with ETX and has a 2 byte CRC that follows you will want to terminate on 3 with 2 tail bytes However if you get an ACK you may not want to collect any tail bytes at all so you would terminate on 6 w...

Страница 41: ...character delay specifies the maximum elapsed time in milliseconds between received characters before the Ether232Plus forwards the data packet to the destination to a maximum of 60 000 ms This optio...

Страница 42: ...Type your preferred packet size and press Enter 4 15 Initial String Transparent Protocol Only Initial String allows you to insert a string of characters that are prepended to the initial data packet a...

Страница 43: ...ppears on the right side of the Configuration screen as shown below NOTE Remember to save your changes by typing to exit configuration Precidia Ether232Plus Configuration v4 04 00 Device Settings Secu...

Страница 44: ...assword from the Security Settings sub menu You are prompted to enter a console access password with a maximum of 8 charac ters 3 Type your password appears as a series of asterisks and press Enter Vi...

Страница 45: ...st of uppercase letters lowercase letters numbers or symbols 1 Choose Security Settings from the Device Settings menu 2 Choose Remote Password from the Security Settings sub menu You are prompted to e...

Страница 46: ...d System Log If you enable the Web Server and do not configure Access Userid and Access Password default anyone who knows the IP address of the unit can access the pages through a Web browser NOTE HTT...

Страница 47: ...security against unauthorized access to the Precidia unit s dynamic Web pages Setting the Access Password NOTE Passwords are case sensitive and can consist of uppercase letters lowercase letters numbe...

Страница 48: ...as shown below 3 Type the letter that corresponds to the desired setting and press Enter 5 7 SNMP Settings Precidia products support SNMPv2c SNMP Simple Network Management Protocol is a protocol for...

Страница 49: ...two separate networks IMPORTANT IPsec contains computationally intensive algorithms Enabling IPsec may cause a significant decrease in the speed performance of the Precidia unit If your application ha...

Страница 50: ...ot been altered en route from the sender MD5 is described in RFC1321 Choose IPsec Tunnel 1 or IPsec Tunnel 2 from the Security Settings sub menu The Secure IP Association 1 or 2 sub menu appears as sh...

Страница 51: ...ynamic IP Address of the unit To enter or change the Secure IP address 1 Choose Secure Address from the Secure IP Association sub menu You are prompted to enter the secure IP address of this device 2...

Страница 52: ...dress of the remote device To enter or change the Network Address 1 Choose Network Address from the Secure IP Association sub menu You are prompted to enter the IP address of the secure network 2 Type...

Страница 53: ...s a 128 bit number in hex format The Auth Key is configured in two parts of 64 bits each To set or change the Encode Key 1 Choose Encode Pt1 from the Secure IP Association sub menu You are prompted to...

Страница 54: ...oose Auth Pt2 from the Secure IP Association sub menu You are prompted to enter bits 65 128 of the authentication key in hex 4 Type the second half of the authentication key 16 characters in hexadecim...

Страница 55: ...own below NOTE Remember to save your changes by typing to exit configuration Precidia Ether232Plus Configuration v4 04 00 Device Settings System Settings 1 Ethernet 192 168 1 28 A Unit ID value 00 01...

Страница 56: ...ION Do not attempt a Firmware Download without first consult ing the instructions and obtaining the correct firmware file from Pre cidia Improper downloading may render the warranty null and void Use...

Страница 57: ...The status information appears an example of which is shown below See Section 7 1 System Status on page 57 for a description of the System Status page 6 5 Dump System Log Dump System Log allows you to...

Страница 58: ...eed to use this feature during the normal course of opera tion The self test takes a few minutes to run and the unit is unable to process any information during this time To run Perform Self Test 1 Ch...

Страница 59: ...t session without saving any changes to the configuration menu 6 9 SNTP Settings Simple Network Time Protocol SNTP is used to synchronize computer clocks on the Internet Every 5 minutes a request is s...

Страница 60: ...f the device 3 Type the unique IP address at the prompt in the format xxx xxx xxx xxx and press Enter 6 9 2 Secondary Server 1 Choose SNTP Settings from the System Settings sub menu 2 Choose Secondary...

Страница 61: ...ption 1 Choose System Setting from the Device Settings menu 2 Choose Disable TCP keep alives from the System Settings sub menu You are prompted to choose a Disable TCP keep alives option shown below S...

Страница 62: ...6 System Settings Ether232Plus User Guide 56 Precidia Technologies Inc 02 CML000057...

Страница 63: ...age 37 Additionally you have the ability to create custom Web pages through which you can remotely control the serial device connected to the Precidia unit Refer to 7 3 Static Web Page for further inf...

Страница 64: ...er locally or remotely 2 Choose System Settings from the Device Settings menu Ether232Plus Status Current time is 2004 03 12 20 03 23 System Uptime Up 0 days 0 08 01 Load Average 5sec 0 30sec 0 5min 0...

Страница 65: ...4 00 2004 03 05 Port 1 serial transparent tcp server idle Received Transmitted Bytes 0 Bytes 0 Packets 0 Packets 0 Avg BpP 0 Avg BpP 0 Network Routing Local Network Subnet Mask Gateway Iface Pkts I n...

Страница 66: ...g This section reveals how the system is handling the data going through the Precidia unit in the same style as the print route command Table 7 2 describes each param eter in the Network Routing secti...

Страница 67: ...days 09 07 22 Port 1 Connection was established with 192 168 1 2 2569 00000 days 09 07 37 Port 1 Connection closed by remote host at 192 168 1 2 2569 00000 days 09 07 37 Port 1 Connection closed by u...

Страница 68: ...the Ether232Plus Configuration screen either locally or remotely 2 Choose System Settings from the Device Settings menu 3 Choose Dump System Log from the System Settings sub menu Ether232Plus Log Jum...

Страница 69: ...sage Ether232Plus Log Deleted The Ether232Plus had its log deleted If present this message will always be the first entry in the log CONSOLE login accepted The unit went into console configu ration mo...

Страница 70: ...ion on tcp port pppp The unit will allow incoming TCP connections on port pppp Port n Connection attempt to xxx xxx xxx xxx pppp The unit is contacting the remote server at the IP address and port ind...

Страница 71: ...erid pass word protected HTTP pages Internet Explorer may attempt access using old data from previous connections resulting in this error Configuration changes saved restarting system A configuration...

Страница 72: ...the unit which does not need renewal DHCP address xxx xxx xxx xxx acquired for xxx seconds DHCP assigned an IP address to the unit for the indicated number of sec onds Before expiration DHCP attempts...

Страница 73: ...nother port Check that the port num ber is available for use Change configuration if necessary 10 requested port number is already in use 11 requested address was not valid for operation 12 operation...

Страница 74: ...ory for static web page s HTML pages and associated files must be converted to a hex file format for download Refer to the Help Guide Coverting and Downloading Static Web Pages at http www precidia co...

Страница 75: ...nsmitted with a block of data in order to detect corruption CSU Channel Service Unit A device that performs protective and diagnostic functions for a telecommunications line CTS Clear To Send A modem...

Страница 76: ...en computers DTR Data Terminal Ready A modem signal line pin 4 of DB 9 connectors used for RS 232 hardware flow control It is the counterpart to Data Set Ready DSR Ethernet An industry standard local...

Страница 77: ...t Significant Bit Byte Bit zero the bit in a binary number giving the number of ones the last or rightmost bit MD5 Message Digest 5 An algorithm used to verify data integrity through the creation of a...

Страница 78: ...ress correspond to the network address and subnet portions of the address The subnet mask has ones in positions cor responding to the network and subnet numbers and zeros in the host number posi tions...

Страница 79: ...modem use a specialized null modem serial cable See Specialized Null Modem Serial Cable on page E 1 Some POS terminals may also require this type of cable 3 If you know the IP address of the unit you...

Страница 80: ...Appendix B Troubleshooting and Support Ether232Plus User Guide B 2 Precidia Technologies Inc 02 CML000027 Troubleshooting Configuration Access Troubleshooting Flow for Set Up Connection...

Страница 81: ...bleshooting Table B 1 Basic Troubleshooting Problem Solution The Configuration screen does not appear when I press the CONFIGURE button 1 Follow the troubleshooting flow diagram on the previous page B...

Страница 82: ...net work Ensure the IP Address Subnet Mask and Gateway are correctly configured This can be done manu ally or through a DHCP server The unit is not communicating with the serial device 1 Ensure all ca...

Страница 83: ...232Plus Check to confirm the opposite end with the black transformer is plugged into a power outlet Check the power outlet by plugging in a known operational power plug Replace the power adapter with...

Страница 84: ...rsts Table B 4 COLLISION Lamp Troubleshooting Lamp Status Standard Troubleshooting Procedure On Collision between data streams has occurred Ensure the Ethernet cable is properly plugged into the Ether...

Страница 85: ...from configuration mode Flashing OK data is being trans mitted None Off No data is being trans mitted Ensure the serial cable between the Ether232Plus and the serial device is properly connected Was...

Страница 86: ...ou within one business day General information User Guides and Help Guides available at http www precidia com See Appendix C Specifications and Warranty for warranty information Off Unit may be incorr...

Страница 87: ...nterface Ethernet IEEE 802 3 10baseT Ethernet connector RJ 45 Ethernet speed 10 Mbps Indicators Power on Ethernet link collision transmit COM transmit sta tus Protocols Services ARP ICMP UDP TCP IP HT...

Страница 88: ...ees Warranty exclusions This warranty shall not apply to appearance or any accessory items including but not limited to cables This warranty shall in addition not apply to damages due to handling tran...

Страница 89: ...Address and Subnet Mask or automatically with DHCP the Gateway address if necessary or automatically with DHCP the Remote Password Refer to the User Guide for more information on configuring these set...

Страница 90: ...e Telnet in the Port field 5 Click Connect You are prompted to enter your password in the Telnet window 6 Type the Remote Password you created during local configuration and press Enter The Configurat...

Страница 91: ...r the Precidia device is acting as a Hayes compatible modem modem connection control you will need a null modem cable with the wiring below This cable may also be required for certain POS terminals Th...

Страница 92: ...pply Ether232Plus User Guide E 2 Precidia Technologies Inc 02 CML000027 RS 485 Serial Cable If you are connecting an RS 485 serial device to the Ether232Plus you will need a 2 wire cable with an RJ 45...

Страница 93: ...logies Inc E 3 Connectors COM Port Pinout DB 9 Pin Signal Type 1 Data Carrier Detect DCD In 2 Receive Data RD In 3 Transmit Data TD Out 4 Data Terminal Ready DTR Out 5 Signal Ground GND Power 6 Data S...

Страница 94: ...also used for RS 485 connections using an RS 485 cable with an RJ 45 connector as illustrated on page E 2 Pin Signal Type 1 Transmit positive TX Out 2 Transmit negative TX Out 3 Receive positive RX I...

Страница 95: ...forming to the specifications below Customers in other parts of the world should obtain a power supply that meets these requirements Output Voltage 9 VDC 500 mA Polarity Center Pin Negative or Positiv...

Страница 96: ...Appendix E Pinouts and Power Supply Ether232Plus User Guide E 6 Precidia Technologies Inc 02 CML000027...

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