Black Box 12 VDC load User Manual page 13

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
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