SRP I/O Module
The SRP I/O module provides two management ports. You can connect a console directly to the RS-232 serial port using a shielded straight-through cable with a female DB-9 connector on one end and a male DB-25 with a crossover adapter on the DB-25 end. This port is called the serial port, the RS-232 port, or the console serial port. Figure A-1 shows the location of the serial port and the sequence of the pins in the RS-232 connector.
The console port is considered a data terminal equipment interface (DTE). Direct connection to a terminal or PC (which also have DTE interfaces) requires a crossover cable.
Table A-2 lists the pinout for the serial cable's RS-232 connector.
Table A-1 SRP I/O module - RS-232 serial connector pinout
Once you have configured an IP address on the system, you can connect using a host running Telnet over the 10/100Base-T Ethernet port on the SRP I/O module. The router ships with a straight-through cable having a male RJ-45 Ethernet connector on each end. Figure A-2 shows the location of the Ethernet port and the sequence of the pins in the RJ-45 connector.
Table A-2 lists the pinouts for the Ethernet cable's RJ-45 connector.
Table A-2 SRP I/O module - RJ-45 connector pinout
To facilitate connecting the system to a terminal, the system is shipped with one of each of the following cable adapters:
- DB-9 female to RJ-45 female crossover null modem adapter
- DB-9 female to RJ-45 female straight-through adapter
Table A-3 lists the pinouts for the crossover adapter.
Table A-3 DB-9 - RJ-45 crossover adapter pinout
Table A-4 lists the pinout for the straight-through adapter.
Table A-4 DB-9 - RJ-45 straight-through adapter pinout