3-30
Cisco 2900 and 3900 Series Hardware Installation
OL-18712-01
Chapter 3 Installing and Connecting the Router
Connecting to a Console Terminal or Modem
Connecting to Backup Power
The redundant power supply (RPS) for the Cisco 2911, Cisco 2921, and Cisco 2951 router is an external
Cisco RPS 2300. To connect the RPS, the router must be fitted with an RPS adapter. See the
“Installing
and Removing a Redundant Power Supply Adapter” section on page 5-42
before connecting to a backup
power source.
If your router uses the Cisco Redundant Power System (RPS), see the
Cisco Redundant Power System
2300 Hardware Installation Guide
for instructions about the power connections. You can access this
document at:
http://www.cisco.com/en/US/docs/switches/power_supplies/rps2300/hardware/installation/guide/2300
hig.html
Caution
Before connecting the RPS to the router, make sure that either the RPS is in standby mode or the RPS
AC power is disconnected. Connecting the RPS to AC power automatically places the RPS in active
mode.
Note
The Cisco 2901 router does not support an RPS.
Connecting to a Console Terminal or Modem
The router has asynchronous serial ports and auxiliary ports. These ports provide administrative access
to the router either locally (with a console terminal or a PC) or remotely (with a modem).To configure
the router through the Cisco IOS CLI, you must establish a connection between the router console port
and either a terminal or a PC.
Use the following cables and adapters to establish a local or remote connection.
Connecting to the Serial Port with Microsoft Windows
Note
Install the USB device driver before establishing a physical connection between the router and the PC
using the USB Console cable plugged into the USB serial port, otherwise the connection will fail. See
the
“Installing the Cisco Microsoft Windows USB Device Driver” section on page 3-35
.
Table 3-4
Local and Remote Connections
Port Type
Cable
Section
Serial (RJ-45)
EIA RJ-45
Connecting to the Serial Port with
Microsoft Windows
Serial (USB)
USB 5-pin mini USB Type-B-to-USB
Type-A
Auxiliary (Modem)
DB-9-to-DB-25
Connecting to the Auxiliary Port