
82
Route Switch Processor (RSP8) Installation and Configuration Guide
OL-4920-02
Reference Information
Software Configuration Register Settings
Settings for the 16-bit software configuration register are written into the NVRAM. Following are some
reasons for changing the software configuration register settings:
•
To select a boot source and default boot filename
•
To enable or disable the Break function
Note
The Break function (software configuration register bit 8) when enabled allows you to send a Break
signal to the router during a system (re)boot. This stops the boot process and places the router into ROM
monitor mode. You can activate the Break function by using a dedicated Break key function on the
keyboard, or by entering the Ctrl-[ (left square bracket) key combination.
•
To control broadcast addresses
•
To set the console terminal baud rate
•
To load operating software from Flash memory card or Flash Disk
•
To enable booting from a Trivial File Transfer Protocol (TFTP) server
P1-6
J1-6 and J2-6
Data Set Ready (DSR)
P1-7
J1-7 and J2-7
Ground
P1-8
J1-8 and J2-8
Data Carrier Detect (DCD)
P1-13
J1-13 and J2-13
YCBL Detect Ground
P1-19
J1-19 and J2-19
YCBL Detect
P1-20
J1-20 and J2-20
Data Terminal Ready (DTR)
Table 8
Auxiliary Y-Cable Signals (Product Number CAB-RSP8AUX=)
Male DB-25 Pins
Female DB-25 Pins
Signal Description
P1-1
J1-1 and J2-1
Ground
P1-2
J1-2 and J2-2
TxD
P1-3
J1-3 and J2-3
RxD
P1-4
J1-4 and J2-4
RTS
P1-5
J1-5 and J2-5
CTS
P1-7
J1-7 and J2-7
Ground
P1-8
J1-8 and J2-8
DCD
P1-13
J1-13 and J2-13
YCBL Detect
P1-19
J1-19 and J2-19
YCBL Detect Ground
P1-20
J1-20 and J2-20
DTR
P1-22
J1-22 and J2-22
Ring
Table 7
Console Y-Cable Signals (Product Number CAB-RSP8CON=) (Continued)
Female DB-25 Pins
Male DB-25 Pins
Signal Description