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CHAPTER 3: INSTALLATION
3.3 SERIAL PORT CONNECTION
Console servers all come with four to forty eight serial ports, marked SERIAL or SERIAL PORTS. These ports connect to serially Managed
Devices. Each console server also has either a dedicated Local Console (or modem) port marked LOCAL or CONSOLE, or one of its
SERIAL ports can be software configured in Local Console mode. This Local Console port can be used for local command-line access
(or an external serial modem out-of-band connection).
All console server models except the LES1600 have a dedicated local RS-232 Console port. This is an RJ-45 connector (Cisco Straight)
located on the front of the LES1700, LES1516A, LES1532A and LES1548A models.
LES1600 models have four or eight serial ports presented as RJ-45 ports 1–x. By default, port 1 on all these models is configured in Local
Console mode.
Conventional CAT5 cabling with RJ-45 jacks is generally used for serial connections. Black Box supplies a range of cables and adapters
that may be required to connect to the more popular servers and network appliances.
Before connecting the console port of an external device to the console server serial port, confirm that the device supports the RS-232C
(EIA-232) standard.
The console servers come with four to forty eight serial connectors for the RS-232 serial ports:
The RJ-45 serial ports are located on the rear panel of the LES1600 and on the rear panel of the rackmount LES1700.
The LES1600, LES1516A, LES1532A, and LES1548A models have Cisco Straight serial pinouts on the RJ-45 connectors.
All serial ports on the LES1700 are RJ-45 and are software-selectable for Cisco Straight or Cisco Rolled pinout.
Some console server models support RS-422 and RS-485 as well as RS-232.
The four RJ-45 serial ports on the LES1604A are each RS-232/422/485 software-selectable.
See Appendix C for RS-422/485 pinout and connection details.
TABLE 3-1. SERIAL PORT PINOUTS
PRODUCT FAMILY
CONNECTOR
SERIAL PORTS PINOUT
RS-232
RS-422/485 CONSOLE PORT
LES1600 series
RJ
X2 Cisco
yes
yes
no
1
LES1700 series
RJ
X2 Cisco
yes
no
no
1
LES1500 series
RJ
X2 Cisco
yes
no
yes
1
NOTE. The first serial port can be reassigned to be a console port.