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 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.

Table 19 lists the pinout for the serial cable's RS-232 connector.

Table 19: SRP I/O Module—RS-232 Serial Connector Pinout

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.

Table 20 lists the pinouts for the Ethernet cable's RJ-45 connector.

Table 20: 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 21 lists the pinouts for the crossover adapter.

Table 21: DB-9—RJ-45 Crossover Adapter Pinout

Table 22 lists the pinout for the straight-through adapter.

Table 22: DB-9—RJ-45 Straight-Through Adapter Pinout