Ethernet Switching - Black Box 12 VDC load User Manual

and can be entered in upper or lower case. Note however, that password parameters are case sensitive. All
commands must be terminated with a carriage return (ASCII 13 or hex 0x0D) before they will be accepted by the
A/B Switch. Several commands can be abbreviated by using just the first character of each command word, for
example the set/get system commands can be abbreviated using "g s" for "get system" or "s s a" for "set system a".
5.3.1 Serial RS232 Switching on models without Ethernet modules
Typing the word "help" or typing the question mark character "?" followed by a carriage return will cause
the A/B Switch to display a list of available commands. Models of the A/B Switch that include an RS232
console port but that do not also include an Ethernet module support a basic set of serial commands as
shown in the example output below.
>help
d1000 Rev B
Commands:
get system
set system X (X = A or B)
help or ? (displays this list)
>
These commands allow you to switch connection states to either the A or B state by using the "set system
A" command or the "set system B" command, and you can query the switch port connection status by using
the "get system" command.
5.3.2 Serial RS232 Switching on models with Ethernet modules
A/B Switch models that have an Ethernet module installed support the same serial commands as listed in
section 5.3.1 above, but also include a number of additional commands. These additional commands
provide access to the configuration parameters and auto switching features that are supported via the
Ethernet module. Refer to section 7 for a complete list of the enhanced console commands.

5.4 Ethernet Switching

A/B Switch models that support Ethernet remote control can be switched using commands sent over an Ethernet
network. In order to use the Ethernet Network port on the A/B Switch you must set the IPADDRESS,
SUBNETMASK and GATEWAY address parameters before connecting to your network. See section 6 for more
details on how to do this. After setting up the system and powering up for the first time, you may also need to
change other parameters for your application. All configuration parameters are stored in non-volatile memory.
They are immediately active when a change is made, but they will not become permanent until the SAVE command,
followed by the RESET command has been executed.
Once the Ethernet remote control port has been configured, the A/B Switch can be switched using SNMP commands
- see the MIB path summary in the appendix for a list of SNMP variables and their functions.
The A/B Switch also supports remote telnet access, and can be controlled via a telnet session using the same
commands as supported by the RS232 serial interface. Refer to section 7 for the complete list of console commands.
As an additional option, A/B Switch models that support Ethernet remote control also include a built in http server
application that allows all of the console commands listed in section 7 to be accessed via a web browser interface.
See section 8 for more details about the web browser interface feature.
Note that the NETWORK port on the A/B Switch is 10base-T only. The STATUS LED will blink whenever the
A/B SWITCH WITH REMOTE INTERFACE
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