Black Box 12 VDC load User manual

December 2011
A/B SWITCH WITH REMOTE INTERFACE
USERS MANUAL
December 2011
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CUSTOMER
SUPPORT
INFORMATION

A/B SWITCH WITH REMOTE INTERFACE Page 2 of 22
FEDERAL COMMUNICATIONS COMMISSION
AND INDUSTRY CANADA
RADIO FREQUENCY INTERFERENCE STATEMENTS
This equipment generates, uses, and can radiate radio-frequency energy, and if not installed and used properly, that
is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication It has
been tested and found to comply with the limits for a Class A computing device in accordance with the
specifications in Subpart B of Part 15 of FCC rules, which are designed to provide reasonable protection against
such interference when the equipment is operated in a commercial environment Operation of this equipment in a
residential area is likely to cause interference, in which case the user at his own expense will be required to take
whatever measures may be necessary to correct the interference
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s
authority to operate the equipment
This digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in
the Radio Interference Regulation of Industry Canada
1. Specific tions
Connectors:
A/B Switch Ports: (3) RJ45 CAT6, or (3) DB9F, or (3) ST, SC, FC or LC (depending on model)
Ethernet Control Port: (1) RJ45 10Base-T port for remote control interface (E/N controllable models only)
Serial Control Port: Female DB9 (serial controllable models only)
Remote Control/Status Port: (1) 6 Position Pluggable Phoenix Terminal Block
Power: (1) 3 5-mm power input
Indic tors:
Switch position LEDs: (2) position A and position B
Command status LED: (1) command executing
Switches: (2) momentary push button switches for A/B switch port control
Power: 100-240VAC, 50/60-Hz wall mount supply, 12VDC output
Power Consumption (typical):
Model 12 VDC load 120 VAC load
Base Model without Serial Control 20 mA DC 15 mA (AC RMS)
Serial Control Model 40 mA DC 20 mA (AC RMS)
Ethernet and Serial Control Model 110 mA DC 35 mA (AC RMS)
Switching Load (CAT6) Additional 65 mA DC Additional 20 mA (AC RMS)
Switching Load (DB9) Additional 80 mA DC Additional 20 mA (AC RMS)
Switching Load (Multimode Fiber) Additional 95 mA DC Additional 25 mA (AC RMS)
Switching Load (Singlemode Fiber) Additional 75 mA DC Additional 20 mA (AC RMS)
On latching units, the switching load is applied for approximately 0 15 seconds during switching On non-latching units, the
switching load is constant in the B state, and therefore must be added to the steady state load
Remote Control Inputs: External dry contact not to exceed 100 ohms resistance including cable
Output St tus Rel y Cont ct R ting: 30 VDC, 1A maximum (resistive)
D t R tes: switch ports on all models are transparent to data rates, formats & protocols
RJ45 CAT6 models support 10/100/1000 and 10G Ethernet
DB9 models support data rates in excess of 10 Mbps
Fiber Optic models support data rates in excess of 10Gbps

A/B SWITCH WITH REMOTE INTERFACE Page 3 of 22
Oper ting W velength: 800 to 1600 nm (multimode models)
1310/1550 nm (single mode models)
Insertion Loss: less than 2 dB (single mode or multimode models)
Optic l Crosst lk: less than -45 dB (multimode models)
less than -55 dB (single mode models)
Physic l:
2 5”(H) 6 25”(W) X 8 1”(D) desktop enclosure, Plastic
4 lbs, including power supply
Switching Dur bility: 1,000,000 operations (all models)
Altitude Toler nce: 10,000 ft (3048 m)
Temper ture Toler nce:
Operating: 32° to 104° F (0° to 40° C)
Storage: -4° to 158° F (-20° to 70° C)
Humidity Toler nce:
Up to 95% non-condensing
2. Introduction
The A/B Switch with Remote Interface device is available in various models with different interface options and
user control capabilities All models provide the same basic A/B switch functionality which is to connect port A or
port B to the C (Common) port, through latching or non-latching relays or fiber optic switch mechanisms For
models using latching mechanisms, the connection state will be maintained if power fails or is removed Non-
latching versions will revert to the port C to port A connection state when power is lost, and will remain in that state
when power is restored until a new switch command is received
Manual control of the switch port connection state is supported through pushbutton switches on the front of the unit
A 6 position pluggable terminal block connector on the rear of the unit provides remote control capability and
accepts external dry contact closures as inputs See section 5 1 and section 5 2 for additional details
Models with Serial control capability include an RS232 console port that can be used to control the switch port
connection state, as well as monitor switch status using a serial RS232 terminal type device See section 5 3 and
section 7 for additional details
Models with Ethernet control include an Ethernet network interface that can be used to control the switch port
connection state, as well as monitor switch status via a web browser, telnet, or using SNMP These models also
have intelligent automatic switching capabilities, and they support sending SNMP traps or syslog messages (user
configurable) for various events and errors See sections 5 4, 5 5, 7, 10 and 11 for additional details

A/B SWITCH WITH REMOTE INTERFACE Page 4 of 22
3. Configur tion
There are no DIP switch or jumper settings that need to be modified in order to operate the basic functrions of the
A/B Switch There are however, several parameters related to Ethernet remote access/control and the automatic
switching features that are configurable These settings are described later in this manual
The internal jumpers and DIP switches inside the A/B Switch have been pre-configured at the factory and should not
be changed from their default settings They are shown here for reference only
Jumper W1 1-2 position = no Ethernet control module
2-3 position = Ethernet control module installed
Jumper W2 1-2 position = no Ethernet control module
2-3 position = Ethernet control module installed
Dipswitch SW1 (resistors may be installed for “closed” positions)
Position 1: open – Latching Relays, closed – Non-Latching Relays
Position 2: open – No Ethernet control module, closed – Ethernet control module installed
Positions 3 thru 8: open (reserved for future use)
4. Inst ll tion
• Find a location suitable for installing the A/B Switch, with access to AC power and the connections you
intend to switch through the unit
• If you intend to use serial control, connect a serial cable to the DB9 RS232 console port The baud rate is
fixed at 9600 baud, no parity, 8 data bits, and 1 stop See table 6 1 for the console port connector pin
assignments
• If you intend to use external dry contact closures to control the A/B Switch, connect the external contacts to
the 6 position terminal block as described in section 5 2
• Connect the provided 12 VDC power supply to an AC source and to the 3 5 mm power supply connector
on the A/B Switch When power is first applied, it is recommended that the user change connection states
on the A/B Switch from A to B and back again to be sure that all the relays are in a known state, prior to
connecting any external devices Press and hold (for approximately 1 second) the appropriate front panel
pushbutton switch until the A/B Switch changes connection state One of the LEDs, A or B, on the front of
the unit will indicate the selected connection state and also serves to show that the switch has power
• Depending on the model of the A/B Switch being installed, connect RJ45 cables, DB9 cables or fiber optic
cables between the A, B and C ports on the switch and your devices The A/B Switch connects the C
(Common) port to either the A or B port Note that the A/B Switch ports provide straight thru connections
and are bidirectional, i e they have no preference to signal direction If your application requires a cross-
over cable, use only 1 cross-over cable in that path Use a straight through cable on the other side of the
switch
• If you are connecting the Ethernet control interface on the A/B Switch to your network, you must first set
the IP address, subnet mask and gateway address parameters of the A/B Switch using the serial port You
should set these parameters before attaching a cable to the NETWORK port, as the default parameters may
not work or could interfere with the operation of your Ethernet network See section 6 for more information
regarding IP setup

A/B SWITCH WITH REMOTE INTERFACE Page 5 of 22
5. Oper tion
When power is applied to the A/B Switch, one of the LED switch position indicators (A or B) on the front of the
unit will illuminate to show the connection state of the switch Indicator A lights when the switch is in position A,
and Indicator B lights when the switch is in position B If neither or both LEDs are lit, then a fault has occurred, or
power has been removed
5.1 M nu l Switching
All A/B Switch models can be manually switched using the push button switches located on the front of the unit To
select the connection state, the appropriate push button switch must be held for one second before the unit will
switch This is to minimize the risk of inadvertently switching the A/B Switch
5.2 Dry Cont ct Closure Switching
You can also switch connection states and monitor the status of the A/B Switch using the remote control
connections on the six position terminal block, located on the rear of the unit Connecting (shorting) input A (pin 1)
to Ground (pin 2) for a minimum of approximately 100 msec will cause the unit to switch to the A position, and
connecting (shorting) input B (pin 3) to Ground (pin 2) for a minimum of approximately 100 msec will cause the
unit to switch to the B position If desired, the A or B control input can remain connected to the Ground input,
which will disable all other control interfaces including the front panel pushbutton switches from being able to
switch connection states of the A/B Switch Note that to insure reliable operation, the external dry contacts and any
associated cable connected to the 6 position terminal block should not exceed 100 ohms resistance Once the A/B
Switch has switched connection states, the status relay contact pin 5 will be internally connected (shorted) to either
pin 4 (switch in position A) or pin 6 (switch in position B) See table 5 1 for the pin assignments on the 6 position
terminal block
Pin 1 A control input
Pin 2 Ground
Pin 3 B control input
Pin 4 (connected to pin 5 = A) Status Relay A contact
Pin 5 Status Relay COMMON
Pin 6 (connected to pin 5 = B) Status Relay B contact
T ble 5.1 Six position termin l block pin ssignments
5.3 Seri l RS232 Switching
A/B Switch models that support serial remote control can be switched using commands over a serial RS232
communications line The parameters of the A/B Switch console port are fixed at 9600 baud, no parity, 8 data bits,
and 1 stop bit (commonly abbreviated as 9600, 8, N, 1) To communicate with the A/B Switch you will need a
serial terminal or similar device configured to these settings Use a straight thru M/F cable to connect the A/B
Switch console connector to this terminal or other device that follows the standard IBM PC DB9 serial port pinout
See table 6 1 for the A/B Switch console port connector pin assignments
When the A/B Switch powers up, it will send a sign-on message followed by a prompt character “>” to your serial
terminal device After each command and the associated response, the A/B Switch will again issue a prompt
character For systems where the console port is being commanded by software, the software should wait for this
prompt character before sending each and every command to the A/B Switch All commands are case insensitive

A/B SWITCH WITH REMOTE INTERFACE Page 6 of 22
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 Seri l 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 Seri l 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 Page 7 of 22
A/B Switch receives a command from the Ethernet network interface or from the serial RS232 interface In addition
the STATUS LED will blink when a switching command is issued via the remote control contacts or front panel
push button switches
The A/B Switch also has the ability to issue either SNMP traps, or UDP syslog messages These messages can be
sent to one or more network administrator systems to provide notification when the A/B Switch changes connection
states either automatically (auto bypass switching or auto recovery switching) or via manual control (front panel
toggle switch or commands received on the RS232 or Ethernet interfaces), and when certain other events occur See
section 10 and section 11 for additional details
To restrict access to the A/B Switch, each of the Ethernet interface options (SNMP, telnet, and web browser) can be
independently enabled/disabled, and if enabled, can be configured to require a login password Additionally, user
access can be restricted by IP address so only commands received from pre-defined “administrator” IP addresses
will be acknowledged and acted upon See section 7 for additional information regarding these commands
5.5 Autom tic Switching
The A/B Switch models that support Ethernet remote control can also be configured to automatically switch
between a “normal” connection state (port C connected to port B) and a “bypass” or “failover” connection state (port
C connected to port A) User configurable failover and recovery parameters control the auto-switching functions to
allow the switch to be used in a variety of applications In order to be able to perform the auto bypass and auto
recovery switching functions, the A/B Switch issues ICMP echo request (PING) packets from its Ethernet network
interface to a user configurable IP address on the network If the “normal” network path connections between the
A/B Switch and the device being monitored go down for any reason, the A/B Switch will no longer be able to PING
the specified IP address, and will then automatically switch from the “normal” connection state (port C connected to
port B) to the “bypass” or “failover” connection state (port C connected to port A) Once the problems on the
primary path have been identified and corrected, the user can issue a command to cause the A/B Switch to switch
from the failover connection state back to the normal connection state If auto recovery is enabled, the A/B Switch
will automatically re-connect the normal path connections when it is again able to PING the user specified IP
address When using the auto recovery feature, it is important that the Ethernet network port on the A/B Switch be
connected to the user’s network such that the normal path is continuously being monitored even when the backup
path has been selected, otherwise the A/B Switch could repeatedly switch (flap) back and forth between the failed
primary path and the functioning backup path See the diagrams below for examples of auto switching
configurations
Auto Failover & Manual Recovery
1.1.10.1
A/B Switch
PING 2.2.20.1
C
A
B
Network
Port
Network 1
primary
WAN
Note: The A/B Switch monitors the WAN
connections by PINGing the far side router
thru the primary WAN link. If the primary WAN
link fails, the A/B Switch auto switches to the
backup WAN link. Auto recovery is disabled
in this configuration to prevent flapping.
router
2.2.20.1
primary
WAN
backup
WAN
backup
WAN
Network 2
router

A/B SWITCH WITH REMOTE INTERFACE Page 8 of 22
The monitorip address and monitormac address parameters can be configured to allow the A/B Switch to monitor
connectivity to any device within, or outside of the A/B Switch’s subnet If monitoring connectivity to a device on
the same subnet as the A/B Switch’s internal Ethernet node, set the A/B Switch’s monitorip address and monitormac
address parameters to the IP address and MAC address of the device being monitored If monitoring connectivity to
a device on a different subnet/network than the A/B Switch’s internal Ethernet node, set the A/B Switch’s
monitormac address parameter to the MAC address of the gateway router on the A/B Switch’s subnet, and set the
monitorip address parameter to the IP address of the device being monitored This allows the PING packet issued by
the A/B Switch to be routed through the gateway router to the target device on a different subnet/network If you
don’t know the MAC address of the target device or the gateway router on the A/B Switch’s subnet, one method is
to open a command prompt window on a P C attached to that same subnet and use the “arp -a” command to retrieve
this information from the P C ’s arp cache (you may need to PING the IP address first before the entry will appear in
the arp cache)
In most network environments rather than manually configuring the monitormac address, you can configure the A/B
Switch to automatically determine the proper MAC address required for the PING packet Enter the monitorip
address information as noted above, and then set the monitormac address parameter to 00 00 00 00 00 00 This
causes the A/B Switch to issuing an ARP request to the gateway router which will respond with the appropriate
MAC address information needed
NOTE: When the Auto Switch fe ture is en bled, m nu l switching c n be performed, but will be overridden
by ny uto switching comm nds th t re subsequently issued by the A/B Switch.
Auto Failover & Auto Recovery
1.1.10.1
A/B Switch
PING 2.2.20.1
C
A
B
Network
Port
Network 1
primary
WAN
Note: The A/B Switch monitors the WAN
connections by PINGing the far side router
thru the primary WAN link. If the primary WAN
link fails, the A/B Switch auto switches to the
backup WAN link. When the primary WAN
link is available again, the A/B Switch auto
switches back to the primary.
router
2.2.20.1
primary
WAN
backup
WAN
backup
WAN
Network 2
router
E/N
switch

A/B SWITCH WITH REMOTE INTERFACE Page 9 of 22
6. Ethernet Network Interf ce Setup (Ethernet remote control c p ble models)
To perform initial setup of the network management interface on the A/B Switch you will need a serial terminal
capable of 9600 baud, no parity, 8 data bits, and 1 stop bit Connect this terminal to the DB9 console connector on
the A/B Switch A straight thru M/F cable is required to connect to an IBM PC standard DB9 serial port For
connection to other device types a custom cable pinout may be required - see Table 6 1 below for the DB9 pin
assignment on the A/B Switch
Table 6 1 – DB9 Pin Assignment
DB9 SIGNAL DIRECTION
2 RECEIVED DATA TO TERMINAL
3 TRANSMITTED DATA FROM TERMINAL
5 GROUND
Apply power to the system
After initialization is complete you will see a sign-on message displayed on the serial console, e g
D1000 Network Agent Version 2 9h MAY 2008
Copyright 2008 (c)
All rights reserved
System starting …
Rack position A
Console ready
>
At this point the A/B Switch is ready to accept the configuration commands that are necessary before you will be
able to communicate with the unit over an Ethernet network You will need to enter an IP address, subnet mask, and
gateway address information for basic access You will also need to set the read and write SNMP community names
if using SNMP, or a web password to allow web browser access, or a telnet password if you plan to control the A/B
Switch via telnet After entering these parameters you will need to save them into non-volatile memory on the A/B
Switch Any time one or more of these parameters is changed; they must be saved followed by a system RESET in
order for the changes to become permanent The following shows a typical setup session Change the entered
parameters to suit your application requirements All of the console level commands are described in detail in
section 7
>set ipaddress 192 168 1 200
OK
>set subnetmask 255 255 255 0
OK
>set gateway 192 168 1 1
OK
>set readcommunityname public
OK
>set writecommunityname private
OK
>save
OK
>reset
resetting, please wait
After the system reinitializes, you will again be greeted by the sign-on message as before At this time you can
connect an Ethernet cable to the 10Base-T network port on the A/B Switch and to an available port on your Ethernet
switch or router The A/B Switch will respond to SNMP, telnet and HTTP messages at the assigned IP address

A/B SWITCH WITH REMOTE INTERFACE Page 10 of 22
7. Console Comm nds
The following commands are available from the RS232 console port or from the Ethernet network port on models of
the A/B Switch that support these remote control interfaces All commands are case insensitive, although several
parameters are case sensitive (read/write community names and web and telnet passwords) GET, SET, and
SYSTEM can all be abbreviated by the first letter of the command This allows shorthand entry of switching
commands Each available command is shown along with an example of a typical response
GET ALL
Displays all parameters and settings An example output is shown here
System Status: B
IP Address: 192 168 1 39
MAC Address: 00 06 57 00 01 02
Subnet Mask: 255 255 255 0
Gateway IP Address: 192 168 1 1
PING Reply: Enabled
SNMP Enable: Enabled
Read Community Name: public
Write Community Name: private
Web Enable: Enabled
Web Password: mctech
Web Timeout: 300
Web Port: 80
Telnet Enable: Enabled
Telnet Password: dataman
Telnet Timeout: 80
Telnet Port: 23
Monitor IP Address: 192 168 1 113
Monitor MAC Address: 00 00 00 00 00 00
Monitor Interval: 10
Monitor Fail Count: 5
Monitor Ok Count: 5
Authentication Trap: Disabled
Alert Type: TRAP
D1000: 2 9N JUL 2010, d1000 Rev B
ADMIN IP Addresses:
SNMP Managers:
1: 192.168.1.113
2: 192.168.1.115
3: 192.168.1.149
GET VERSION
Displays the software revision of the system
D1000: 2 9h MAY 2008, d1000 Rev B
GET SYSTEM
Displays the system status This is the same as the status returned by the SNMP variable d1000SwitchControl It
will report “A” if the switch is in position A, and “B” if the switch is in position B

A/B SWITCH WITH REMOTE INTERFACE Page 11 of 22
System Status: A
SET SYSTEM A[B]
Sets the system to position A or B
SET IPADDRESS X X X X
GET IPADDRESS
Set or display the current IP address of the network module Any change will not become permanent until a SAVE
and RESET operation sequence is performed
SET SUBNETMASK X X X X
GET SUBNETMASK
Set or display the current subnet mask of the network module Any change will not become permanent until a
SAVE and RESET operation sequence is performed
SET GATEWAY X X X X
GET GATEWAY
Set or display the current gateway IP address of the network module Any change will not become permanent until a
SAVE and RESET operation sequence is performed
SET PINGREPLY ON[OFF]
GET PINGREPLY
Set or display whether or not the A/B Switch will respond to incoming PINGs (ICMP echo requests) Any change
will not become permanent until a SAVE operation is performed
SET SNMPENABLE ON[OFF]
GET SNMPENABLE
Set or display whether or not the SNMP interface on the A/B Switch is enabled Any change will not become
permanent until a SAVE operation is performed
SET READCOMMUNITYNAME string
GET READCOMMUNITYNAME
SET WRITECOMMUNITYNAME string
GET WRITECOMMUNITYNAME
Set or display the current read or write community name as specified Note that in general these are case sensitive
fields Any change will not become permanent until a SAVE and RESET operation sequence is performed
SET WEBENABLE ON[OFF]
GET WEBENABLE

A/B SWITCH WITH REMOTE INTERFACE Page 12 of 22
Set or display the current state of web based access The network module will not accept any HTTP requests when
web enable is off Any change will not become permanent until a SAVE and RESET operation sequence is
performed
SET WEBPASSWORD string
GET WEBPASSWORD
Set or display the current web password Note that this is a case sensitive field Any change will not become
permanent until a SAVE and RESET operation sequence is performed
SET WEBTIMEOUT seconds
GET WEBTIMEOUT
Set or display the current web timeout in seconds After a period of inactivity of this many seconds, the network
module will request a login Note that the web timeout cannot be disabled any change will not become permanent
until a SAVE and RESET operation sequence is performed
SET WEBPORT N
GET WEBPORT
Set or display the current web port number Changing the web port number from the default can be used to provide
an additional level of security Any change will not become permanent until a SAVE and RESET operation
sequence is performed
SET TELNETENABLE ON[OFF]
GET TELNETENABLE
Set or display the current state of telnet based access The network module will not accept any telnet requests when
telnet enable is off Any change will not become permanent until a SAVE and RESET operation sequence is
performed
SET TELNETPASSWORD string
GET TELNETPASSWORD
Set or display the current telnet password Note that this is a case sensitive field Any change will not become
permanent until a SAVE and RESET operation sequence is performed
SET TELNETTIMEOUT seconds
GET TELNETTIMEOUT
Set or display the current telnet timeout in seconds After a period of inactivity of this many seconds, the network
module will disconnect any current telnet session Note that the telnet timeout cannot be disabled, it can however,
be set arbitrarily large Any change will not become permanent until a SAVE and RESET operation sequence is
performed
SET TELNETPORT N
GET TELNETPORT
Set or display the current telnet port number Changing the telnet port number from the default can be used to

A/B SWITCH WITH REMOTE INTERFACE Page 13 of 22
provide an additional level of security Any change will not become permanent until a SAVE and RESET operation
sequence is performed
SET MONITORIP [X X X X]
GET MONITORIP
Set or display the IP address of the device that the A/B Switch is to PING to determine the active port alternate (A)
or normal (B) Setting this to 0 0 0 0 disables the auto switch/recovery function Any change will not become
permanent until a SAVE operation is performed The MONITORIP is the IP address used to control an optional
auto recovery function If enabled, the auto switch/recovery function will PING the monitor IP address When the
PING is successful, the A/B Switch will auto-switch to the normal path (B), connecting port B to the common port
C When the PING is not successful, the A/B Switch will auto-switch to the alternate path (A), connecting port A to
the common port C
SET MONITORMAC [X X X X X X]
GET MONITORMAC
Set or display the MAC (Ethernet) address of the device that the A/B Switch is to PING to determine the active port
switch (A) or normal (B) This value is entered as a series of six HEX characters with spaces between each HEX
character If monitoring connectivity to a device on the same subnet as the A/B Switch internal Ethernet node, set
the monitormac address parameters to the MAC address of the device being monitored If monitoring connectivity to
a device on a different subnet/network than the A/B Switch internal Ethernet node, set the monitormac address
parameter to the MAC address of the gateway router on the A/B Switch subnet If the monitormac address is set to
00 00 00 00 00 00, the A/B Switch will automatically determine the proper MAC address required for the PING
packet by issuing an ARP request to the gateway router Any change will not become permanent until a SAVE
operation is performed
SET MONITORINTERVAL [N]
GET MONITORINTERVAL
Set or display the time interval between PINGs issued by the internal Ethernet node in the A/B Switch, measured in
100 msec increments To issue PINGs every 1 5 seconds, set this value to 15 The valid range is 1 to 255 (0 1
seconds to 25 5 seconds) A value of 0 disables the automatic switch/recovery function Any change will not
become permanent until a SAVE operation is performed
SET MONITORFAILCOUNT [N]
GET MONITORFAILCOUNT
Set or display the number of successive PING attempts that must fail before the A/B Switch automatically switches
to the alternate path and removes the normal path connection path The valid range is 1 to 255 A value of 0 disables
the automatic switch/recovery function Any change will not become permanent until a SAVE operation is
performed
SET MONITOROKCOUNT [N]
GET MONITOROKCOUNT
Set or display the number of successive PING attempts that must succeed before the A/B Switch automatically
switches back to the normal path and removes the alternate connection path The valid range is 1 to 255 A value of
0 disables only the automatic recovery function – automatic switching will still operate if enabled If auto recovery
is disabled the user must manually switch back to the normal path via the front panel toggle switch or by issuing a
“set system B” command Any change will not become permanent until a SAVE operation is performed

A/B SWITCH WITH REMOTE INTERFACE Page 14 of 22
SET AUTHENTICATIONTRAP ON[OFF]
GET AUTHENTICATIONTRAP
Set or display the current state of authentication error traps Authentication traps will be generated when this
parameter is set to ON, and not when OFF Note that this setting only affects the trap generation, and not how the
network module handles an authentication failure An authentication failure generally means that an SNMP access
was attempted with an incorrect community name Any change will not become permanent until a SAVE and
RESET operation sequence is performed
SET ALERTTYPE [TRAP/SYSLOG]
GET ALERTTYPE
Set or display the type of alert messages sent by the A/B Switch when certain events such as a change in switch state
occur The A/B Switch can be configured to issue either syslog messages, or SNMP traps Note that at least one IP
address must be entered using the “SET MANAGER N X X X X” command before either syslog messages or traps
will be issued See section 9 for a list of the traps supported by the A/B Switch, and see section 10 for a list of the
supported syslog messages
SET ADMINIP N X X X X
Set administrator N (1-8) IP address Up to 8 different administrator IP addresses can be entered To remove an
entry from the list, set the IP address to 0 0 0 0 If all 8 ADMIN IP addresses are 0 0 0 0 (no ADMIN IP addresses
are configured) the A/B Switch will allow access via the Ethernet interface from any IP address, subject to the
existing password and enable flags for each interface If one or more ADMIN IP addresses are non-zero, the A/B
Switch will only process messages received from the configured (non-zero) ADMIN IP addresses All other
messages will be ignored This ADMIN IP address filtering feature applies to the telnet, web browser and SNMP
Ethernet interfaces and to the PING reply functions The ADMIN IP address filtering does not affect outgoing PING
and ARP messages so the A/B Switch is still able to monitor any IP address for the “auto-switch” features The
administrator IP addresses can be different than the manager IP addresses Any change will not become permanent
until a SAVE operation is performed
GET ADMINIP N
Display the IP address of administrator N (1-8) If no value is entered for “N”, then all administrator IP addresses
will be displayed
ADMIN IP Addresses:
1: 192.168.1.113
2: 192.168.1.115
3: 192.168.1.149
SET MANAGER N X X X X
Set SNMP manager N (1-16) IP address Up to 16 SNMP MANAGER IP addresses can be entered for destinations
of trap messages Trap messages will be sent to all enabled MANAGER IP addresses To remove an entry from the
list, set the IP address to 0 0 0 0 Any change will not become permanent until a SAVE and RESET operation
sequence is performed
SNMP Manager Table:
1: 192 168 1 113
2: 192 168 1 115

A/B SWITCH WITH REMOTE INTERFACE Page 15 of 22
GET MANAGER N
Display SNMP manager N (1-16) IP address
GET MANAGER
Display all SNMP manager IP addresses
PING X X X X
Causes the A/B Switch to issue a single ICMP echo request packet to the designated IP address If a response is
received, the A/B Switch will display the message “Reply from X X X X” If no response is received within 5
seconds, the A/B Switch will display the message “Request timed out”
SAVE
Save settings for next startup All settings are stored in NV memory and restored upon power on Any change will
not become permanent until a SAVE and RESET operation sequence is performed
RESET
Causes a network system reboot and reloads all parameters from stored settings Note that you will lose your
connection and have to log in again if giving this command from a telnet or web interface session
SET DEFAULTS
Causes the A/B Switch configuration parameters to be restored to the factory settings Any changes to the settings
will not become permanent until a SAVE and RESET operation sequence is performed
HELP
Displays a list of commands
>help
D1000 CONSOLE COMMANDS:
GET ALL (display all parameters)
GET VERSION (display software versions)
GET[SET] SYSTEM [A/B] (control all system ports)
GET[SET] IPADDRESS [X X X X]
GET[SET] SUBNETMASK [X X X X]
GET[SET] GATEWAY [X X X X]
GET[SET] PINGREPLY [ON/OFF]
GET[SET] SNMPENABLE [ON/OFF]
GET[SET] READCOMMUNITYNAME [string]
GET[SET] WRITECOMMUNITYNAME [string]
GET[SET] WEBENABLE [ON/OFF]
GET[SET] WEBPASSWORD [string]
GET[SET] WEBTIMEOUT [N] (seconds)
GET[SET] WEBPORT [N]
GET[SET] TELNETENABLE [ON/OFF]
GET[SET] TELNETPASSWORD [string]

A/B SWITCH WITH REMOTE INTERFACE Page 16 of 22
GET[SET] TELNETTIMEOUT [N] (seconds)
GET[SET] TELNETPORT [N]
GET[SET] MONITORIP [X X X X] (0 0 0 0 to disable)
GET[SET] MONITORMAC [X X X X X X] (X = HEX CHARS)
GET[SET] MONITORINTERVAL [N] (1/10 seconds, 0 to disable)
GET[SET] MONITORFAILCOUNT [N] (0 to disable)
GET[SET] MONITOROKCOUNT [N] (0 = no auto recover)
GET[SET] AUTHENTICATIONTRAP [ON/OFF]
GET[SET] ALERTTYPE [TRAP/SYSLOG]
GET[SET] ADMINIP N [X X X X] (0 0 0 0 to disable an entry)
GET ADMINIP (display all administrator IP addresses)
GET[SET] MANAGER N [X X X X] (0 0 0 0 to disable an entry)
GET MANAGER (display all SNMP managers)
PING X X X X (ICMP ECHO to remote host)
SAVE save settings for next startup
RESET restart (use after SAVE)
SET DEFAULTS (restore default user settings, save required)
>
Notes:
• Commands can be entered in upper or lower case
• All commands should be terminated with a carriage return (ASCII 13) or (hex 0x0D)
• Set/get system commands can be abbreviated using just first letters, i e “g s” for “get system” or “s s a” for
“set system a”
8. Web Interf ce ( Ethernet remote control c p ble models )
The network module installed in Ethernet remote control capable models of the A/B Switch also provides access to
console commands through a web browser interface When enabled (see SET WEBENABLE command) entering
the A/B Switch’s IP address (index html) in your web browser’s URL address line will present a log on page for the
A/B Switch similar to the following example Note: If using a pop up blocker on your web browser, be sure to
allow pop ups from the IP address of the A/B Switch, otherwise you could experience trouble receiving a response
through the interface
Web Interface Version 1 0
Copyright (c) 2008
All rights reserved
Ple se logon:
Password:
Submit
Figure 8 1 Logon Screen

A/B SWITCH WITH REMOTE INTERFACE Page 17 of 22
After successfully entering the correct web password (see SET WEBPASSWORD command) you will get the
following page (or similar)
Web Interface Version 1 0
Copyright (c) 2008
All rights reserved
Command console:
Enter new command:
Send Command Logoff
Figure 8 2 Initial Command Screen
At this point you may enter any valid command into the text box and click “Send Command” to execute The
following is an example result of the GET ALL command

A/B SWITCH WITH REMOTE INTERFACE Page 18 of 22
Web Interface Version 1 0
Copyright (c) 2008
All rights reserved
Command console:
Output from last command
System Status: B
IP Address: 192 168 1 30
Subnet Mask: 255 255 255 0
Gateway IP Address: 192 168 1 1
Web Enable: Enabled
Web Password: mctech
Web Timeout: 300
Web Port: 80
Telnet Enable: Enabled
Telnet Password: dataman
Telnet Timeout: 80
Telnet Port: 23
Monitor IP Address:192 168 1 199
Monitor MAC Address: 00 00 00 00 00 00
Monitor Interval: 5
Monitor Fail Count: 5
Monitor OK Count: 5
Read Community Name: public
Write Community Name: private
Authentication Trap: Disabled
AlertType:SYSLOG
D1000: 2 9h MAY 2008, d1000 Rev B
SNMP Managers:
Enter new command:
Send Command Logoff
Figure 8 3 Example Command Results Screen
The A/B Switch will only allow 1 telnet or web access session To free up a session without waiting for the web
timeout, click “Logoff” For this reason, the web timeout should be set to a workable time Resetting the A/B
Switch will also clear the current web session

A/B SWITCH WITH REMOTE INTERFACE Page 19 of 22
9. SNMP MIB P th Summ ry
[internet] – 1.3.6.1
[private] – 1.3.6.1.4
[enterprises] – 1.3.6.1.4.1
[mctech] – 1.3.6.1.4.1.9477
[mctech] – 1.3.6.1.4.1.9477
Market Central, Inc. private enterprise number
[mcAgent] – 1.3.6.1.4.1.9477.1
Market Central, Inc. SNMP Agent
The following is a list of the SNMP variables corresponding to:
D1000 A/B Switch.
[d1000] – 1.3.6.1.4.1.9477.1.7
D1000 Switch
[d1000SwitchControl] – 1.3.6.1.4.1.9477.1.7.1
[d1000KeyStat] – 1.3.6.1.4.1.9477.1.7.2
[d1000PowerStat] – 1.3.6.1.4.1.9477.1.7.3
[d1000SoftwareVersion] – 1.3.6.1.4.1.9477.1.7.4
[d1000Name] – 1.3.6.1.4.1.9477.1.7.5
[mcIpRequester] – 1.3.6.1.4.1.9477.2
A/B Switch SNMP V ri ble Definitions:
[d1000SwitchControl] – 1.3.6.1.4.1.9477.1.7.1
D1000 Switch Control. This variable is used to control the selected channel. When set to A, the switch
will connect channel A to C. When set to B, the switch will connect channel B to C.
[d1000KeyStat] – 1.3.6.1.4.1.9477.1.7.2
D1000 Key-Lock Switch Status. This is a read only variable. This variable can be used to determine if the
Key-Lock Switch is in the OFF or ON position. Although the standard A/B Switch does not have a Key-
Lock Switch, this feature is supported and could be added on future models.
[d1000PowerStat] – 1.3.6.1.4.1.9477.1.7.3
D1000 Power Status. This is a read only variable. Since the A/B Switch is powered via a single power
supply, the Power Status will report “OneSupply”.
[d1000SoftwareVersion] – 1.3.6.1.4.1.9477.1.7.4
D1000 Software Version. This is a read only variable, and is limited to a maximum of 14 characters.
[d1000Name] – 1.3.6.1.4.1.9477.1.7.5
D1000 Identification String. The string is limited to a maximum of 14 characters.
[mcIpRequester] – 1.3.6.1.4.1.9477.2
The IP address of the remote entity that last accessed branch 1.3.6.1.4.1.9477.1. This variable can be
used to identify the last IP address to access any mcAgent variable. It is returned in the
authenticationFailure message.

A/B SWITCH WITH REMOTE INTERFACE Page 20 of 22
10. Tr ps Summ ry
The A/B Switch can be configured to issue an SNMP trap when certain events occur Use the “SET ALERTTYPE”
command to enable traps, and use the “SET MANAGER N X X X X” command to specify the IP addresses of up to
16 different NMS computers that you want to send these traps to (see section 7 for details regarding these
commands) The following traps are generated by the A/B Switch For additional details regarding theses traps, and
the SNMP MIB objects supported by the A/B Switch, please refer to the d1000 mib file supplied with your switch
generic trap 0 coldStart – issued when the unit is powered up, or after a RESET command
generic trap 4 AuthenticationFailure – issued when an invalid SNMP read/write community name is
used when attempting to access the A/B Switch
specific trap 6 SystemSwitchChange – issued in response to a switching action caused by a user initiated
command, front panel push button action, or remote dry contact closure
specific trap 8 AutoSwitchChange – issued when the A/B Switch automatically changes connection
states via the auto switch feature, or the auto recovery feature
11. Syslog Mess ges
The A/B Switch can be configured to issue a syslog message rather than an SNMP trap when certain events occur
To configure the A/B Switch to issue syslog messages, you must use the “SET ALERTTYPE” command to select
SYSLOG messages, and you need to specify the IP address(es) of the device(s) that will be receiving the syslog
messages by using the “SET MANAGER N X X X X” command (see section 7 for details regarding these
commands) Once these configuration changes have been made, the A/B Switch will issue syslog messages for the
following types of events:
• power up cold start, or restart using the RESET command
• SNMP authentication failure (access attempted using incorrect read or write community name)
• switching action caused by a user initiated command, front panel push button action, or remote dry contact
closure
• auto switch or auto recovery switch functions
The syslog messages issued by the A/B Switch conform where possible to the general recommendations as
described in rfc3164 There is no real time clock within the A/B Switch however, so each syslog message uses a
default timestamp value of Jan 1 00:00:00 The device receiving the syslog messages will need to apply a timestamp
or other identifier if this information is needed The general format for each syslog message from the A/B Switch is
as follows:
Jan 1 00:00:00 [IP address] Bypass Switch: [specific message based on the event that occurred]
Listed below is each type of syslog message that the A/B Switch can issue, followed by the actual syslog message
that the A/B Switch will send
Syslog Messages
power up cold start (or RESET command)
Jan 1 00:00:00 192 168 1 151 Bypass Switch: Switch has been reset
SNMP authentication failure
Jan 1 00:00:00 192 168 1 151 Bypass Switch: SNMP authentication failure
system switch A to B via S S B command (or toggle switch)
Jan 1 00:00:00 192 168 1 151 Bypass Switch: System switch from A to B position