
Chapter 1 Cisco XR 12406 Router Overview
Physical and Functional Description
1-12
Cisco XR 12406 Router Installation Guide
OL-13831-01
Figure 1-6 PRP-2 Port Activity LEDs—Partial Front Panel
Figure 1-7 PRP-3 Port Activity LEDs—Partial Front Panel
PRP Auxiliary and Console Ports
The auxiliary and console ports on the PRP are EIA/TIA-232 (also known as
RS-232) asynchronous serial ports. These ports connect external devices to
monitor and manage the system.
• The auxiliary port—A (male) plug that provides a data terminal equipment
(DTE) interface. The auxiliary port supports flow control and is often used to
connect a modem, a channel service unit (CSU), or other optional equipment
for Telnet management.
• The console port—A (female) receptacle that provides a data
circuit-terminating equipment (DCE) interface for connecting a console
terminal.
RX
TX
PRIMARY
SLOT-1
SLOT-0
LINK
EN
RX
TX
ETH 1ETH 0
LINK
PRIMARY
EN
70693
ACT
SIG
ACT
SIG
BITS 0
DATA
LINK
DATA
LINK
ETH 1ETH 0
272388
BITS 1 AUX CONSOLE
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