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NDS/6000 Description |
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What is the NDS/6000?
The NDS/6000 family of remote communications servers connects to 10/100 Mbps Ethernet and provides one, two or four DB-9 serial ports that are software selectable to RS-232, RS-422, or RS-485. The NDS/6000 uses the TCP/IP family of protocols to provide terminal connectivity and communications services in open systems environments.
Features and benefits
The NDS/6000 offers the following features and benefits:
- Easy set up and configuration
- Open systems communications for multi-site data networks
- Can be used in a variety of data communications applications
- Reduces cost and complexity
- 1, 2 or 4 DB-9 serial ports
- 1 Ethernet port with optional 3 port ethernet hub, ethernet port cross-wired for easy connection to another hub
- High-speed serial connections
- Software selectable RS-232, RS-422, or RS-485 modes on each port
- Dial-up LAN/Internet access
- IP packet routing
- Operating system independent
- Modem and serial printer pooling
- Complete remote diagnostics
- LEDs for each port, signaling port status and error conditions
- Industry standard interoperability
- Developer's API for custom, on-board applications and protocols
- Raw reverse telnet option so you can access ports without using special protocol or processing
- Standard lpd printing option that is efficient and easy to use
- Multiple services per port allows setting up both incoming and outgoing services on the same port
- Standard lpd printing option that is efficient and easy to use
- Dial on demand to automatically dial and make a connection with a remote system
- Multiple services per port allows setting up both incoming and outgoing services on the same port
- Reverse telnet support for a variety of UNIX operating systems
- Full SSL Security
- Phone-to-IP Mapping
NDS/6000 Connectors
The front panel of the NDS/6000 provides 1,2 or 16 DB-9 serial ports, with its number by each connector. Each serial port connector has an associated LED, also numbered, that signals normal operation or error conditions. A larger status LED on the lower right indicates the overall status of the port server. A reset button is provided. The hardware reset button reboots the port server, restarting it as if it had been powered off and back on, putting the unit into operating mode. The reset button also allows restoration of the default configuration to the unit.
The back panel provides up to four RJ-45 Ethernet hub ports. The port labeled LAN is wired for connection to a hub. In addition, LEDs for the Ethernet ports are located on the rear panel, conveniently located next to the Ethernet ports. The power connector is located on the right side.
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| NDS/6000 Port Ethernet |
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| NDS/6000 Back Panel - 4 Port Ethernet Hub |
Configuring the NDS/6000
IP Addresses
The NDS/6000 provides flexibility in assigning the necessary IP address. You can assign the IP address using one of five methods:
- If you are using Windows, you can install and use the NativeCOM software, setting the IP address as part of the configuration process. The NativeCOM software is provided free of charge with your Systech port server.
- directly assign the address on the RCS/6000 via terminal
- assign the IP address using ARP on a host
- assign the IP address using a BOOTP server allow a DHCP server to assign the IP address
Session settings
When the NDS/6000 is booted, the configuration information that defines the operation of the NDS/6000 during the session (the active configuration) is loaded into memory from the current configuration database in flash memory. You can change any configuration setting in the active configuration. In addition, you can save the active configuration into the current configuration database (in flash memory) so that the changed settings will be available after reboot/restart.
When the NDS/6000 is delivered, the current configuration database contains factory default settings. In addition, a factory default configuration database (a copy of the current configuration database) is stored in flash memory. The factory default configuration database is stored as a backup configuration which can be restored into the current configuration database if necessary. If the NDS/6000 encounters an error condition while loading the current configuration database into the active configuration, it will load the factory default configuration database into the active configuration instead, in order to complete the boot. The status LED on the back panel will flash alternately yellow and green to indicate that a problem occurred and the factory default configuration was loaded.
Changing Settings
The configuration settings can be changed:
- using a web browser to connect to the IP address of the NDS/6000; or
- for Windows users, using the NativeCOM port redirector software developed by Systech and provided free of charge with the NDS/6000.
At any point, you can restore the factory default configuration settings.
Settings
Some of the commonly changed configuration items are.
Passwords
- User login
- Administrative
Networking
- Internet address
- Subnetwork mask
- Initial route list
- Host name list
- Domain name
- DNS server list
Asynch serial ports
- Service definition
- Speed
- Character length
- Stop bits
- Parity
- Input flow control
- Output flow control
- Inactivity timeout
- Switch character
- dcd modem signal
Possible Configurations
Terminal dedicated to a host
Automatically connects a terminal to a host located anywhere on the network. Useful for applications that require a user's terminal to communicate with one and only one host computer, perhaps running a specialized application program.
Terminal for Rlogin/telnet using multiple sessions
Supports up to four sessions for each connected terminal.
Dial-in modem for telnet
Can dial-in and automatically start a telnet session.
Dial-out modem (rtelnet)
Can access the modem for dial-out using telnet or using a reverse telnet connection and application program, such as terminal emulator, tip, cu.
Printing to a serial port
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