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 52 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.
Figure 52: SRP I/O Module Serial Port
Table 19 lists the pinout for the serial cable's RS-232 connector.
Table 19: SRP I/O Module—RS-232 Serial Connector Pinout
Pin |
Signal |
---|---|
1 |
DCD |
2 |
RXD |
3 |
TXD |
4 |
DTR |
5 |
GND |
6 |
DSR |
7 |
RTS |
8 |
CTS |
9 |
RNG |
After 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 53 shows the location of the Ethernet port and the sequence of the pins in the RJ-45 connector.
Figure 53: SRP I/O Module Ethernet Port
Table 20 lists the pinouts for the Ethernet cable's RJ-45 connector.
Table 20: SRP I/O Module—RJ-45 Connector Pinout
Pin |
Signal |
---|---|
1 |
TX + |
2 |
TX – |
3 |
RX + |
4 |
no connect |
5 |
no connect |
6 |
RX – |
7 |
no connect |
8 |
no connect |
To facilitate connecting the system to a terminal, the system is shipped with one of each of the following cable adapters:
Table 21 lists the pinouts for the crossover adapter.
Table 21: DB-9—RJ-45 Crossover Adapter Pinout
DB-9 Pin |
Signal |
RJ-45 Pin |
---|---|---|
1 |
DCD |
1 |
2 |
RXD |
3 |
3 |
TXD |
2 |
4 |
DTR |
6 |
5 |
GND |
5 |
6 |
DSR |
4 |
7 |
RTS |
8 |
8 |
CTS |
7 |
9 |
RNG |
no connect |
Table 22 lists the pinout for the straight-through adapter.
Table 22: DB-9—RJ-45 Straight-Through Adapter Pinout