( D R A F T L A B E L ) A L P H A D R A F T - C I S C O C O N F I D E N T I A L
3-14
Cisco 7204 Installation and Configuration Guide
OL-5101-02
Chapter 3 Installing the Cisco 7204
Connecting I/O Controller Cables
Figure 3-12 Cisco 7204 I/O Controller Connections
Console and Auxiliary Port Connection Equipment
The I/O controller has two EIA/TIA-232 ports: a DCE-mode console port and a DTE-mode auxiliary
port. (Refer to
Figure 3-13
.) The console port is a DCE DB-25 port for connecting a data terminal, which
you will use to configure the interfaces and bring up the router. The auxiliary port is a DTE DB-25 plug
for connecting a modem or other DCE device (such as a CSU/DSU or other router) to the Cisco 7204.
Note
Both the console and auxiliary ports are asynchronous serial ports; any devices connected to these ports
must be capable of asynchronous transmission. (Asynchronous is the most common type of serial device;
for example, most modems are asynchronous devices.)
Before connecting a terminal to the console port, configure the terminal to match the router console port
as follows: 9600 baud, 8 data bits, no parity, 2 stop bits (9600 8N2). You need an EIA/TIA-232 DCE
console cable to connect the terminal to the console port. After you establish normal router operation,
you can disconnect the terminal.
You must supply your own interface cable between the auxiliary port and the equipment you are
connecting. For console and auxiliary port pinouts, refer to the following sections “
Console Port
Signals
” and “
Auxiliary Port Signals
.”
2
ETHERNET 10BT
EN
A
B
LE
D
0
2
1
3
LI
N
K
0
1
2
3
FAST SERIAL
EN
TD
TC
R
D
R
C
LB C
D
TD
TC
R
D
R
C
LB C
D
TD
TC
R
D
R
C
LB C
D
TD
TC
R
D
R
C
LB C
D
ENABLED
M
II
L
IN
K
R
J4
5
FAST ETHERNET
0
0
4
1
3
ETHERNET-10BFL
E
N
R
X
0
1
2
3
4
TX
R
X
TX
R
X
TX
R
X
TX
R
X
TX
H7407
MII
EN
RJ45
EN
RJ45
LINK
1O PWR
OK
R
J-
45
C
P
U
R
E
S
E
T
FAST ETHERNET INPUT/OUTPUT CONTROLLER
ENABLED
PCMCIA
EJECT
SLOT 0
SLOT 1
FE MII
Auxiliary
port
Console
port
Optional Fast Ethernet port
(MII receptacle and RJ-45 receptacle)
