Cisco 7204 - VXR Router, Руководство по установке и настройке

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1-13
Cisco 7204 Installation and Configuration Guide
OL-5101-02
Chapter 1 Product Overview
Physical Description
Figure 1-9 I/O Controller—without Fast Ethernet Port
Table 1-3 lists the I/O controller memory components.
Depending on whether the Fast Ethernet port is present, up to five LEDs on the I/O controller faceplate
indicate system status; two additional LEDs indicate the status of the Flash memory cards installed in
either PCMCIA slot.
Figure 1-10 shows the LEDs on the I/O controller with the Fast Ethernet port that is equipped with a
single MII port. Figure 1-11 shows the LEDs on the I/O controller with the Fast Ethernet port that is
equipped with an MII port and an RJ-45 port. Figure 1-12 shows the LEDs on the I/O controller without
the Fast Ethernet port. Table 1-5 lists I/O controller LEDs and their functions. To use the LEDs for
troubleshooting the I/O controller, refer to the “Identifying Startup Problems” section on page 5-3 in
“ Chapter 5, “Troubleshooting the Installation.” .”
A CPU reset button is located next to the IO power OK LED or the auxiliary port on the I/O controller
faceplate. The CPU reset button resets the entire system.
Caution To prevent system errors and problems, use the CPU reset button only at the direction of your service
representative.
H7400
A
U
X
C
O
N
S
O
LE
Midplane
connectors
Temperature
sensor
Flash SIMM [U99]
NVRAM [U41]
Temperature
sensor
Boot ROM [U20]
PC Card slots
Console
port
Captive
installation
screw
LED and
CPU reset
button
Auxiliary
port
P
C
M
C
IA
E
JE
C
T
S
LO
T
0
C
P
U
R
E
S
E
T
IO
P
O
W
E
R
O
K
S
LO
T
1
INPUT/OUTPUT CONTROLLER
E
N
A
B
LE
D
Table 1-4 I/O Controller Memory Components
Memory Type Size Quantity Description Location
Boot ROM 256 KB 1 DIP-type integrated circuit for the ROM
monitor program U20
Flash SIMM
Flash memory
card
4 MB
8 to 20 MB
1
Up to 2
Contains the default boot helper image
Contains the default Cisco IOS image
U99
PCMCIA
slot 0 and
slot 1
NVRAM 128 KB 1 Nonvolatile EPROM for the system
configuration file U41