1-10
Cisco 7100 Series VPN Router Installation and Configuration Guide
78-6341-03
Chapter 1 Overview
Cisco 7120 Series Overview
Figure 1-9
shows the back of the Cisco 7120-E3. Access to the interfaces is located at the back of the
router.
Figure 1-9
Cisco 7120-E3—Back View
The Cisco 7120-E3 WAN port has one enabled LED and six uplink port status LEDs. After system
initialization, the enabled LED goes on to indicate that the port has been enabled for operation. If the
initialization fails for any reason, the enabled LED will not go on. The LEDs are shown in
Figure 1-10
and described in
Table 1-3
.
Figure 1-10 Cisco 7120-E3 WAN Port LEDs
18488
SLOT 0
SLOT 1
XMTR
RCVR
EN
RCLK FERF RL
AIS OOF LL
FE 0 / 0
FE
AUX
7120 - E3
5
I
CONS
ACT
0 / 1
ACT
LNK
0
LNK
1
PWR
SYS
RDY
0
2
Console and
auxiliary ports
Fixed LAN ports
Power supply
E3 WAN port
serial 1/0
LEDs
LED
Modular port adapter
Fast Ethernet 0/0
Fast Ethernet 0/1
PC Card
slots (covered)
Service module
Table 1-3
Cisco 7120-E3 LED Descriptions
LED Label
Color
State
Function
EN
Green
On
Indicates the port is ready.
RCLK
Green
On
Indicates a receive clock has been detected.
FERF
Yellow
On
Indicates the framer detected far-end receive failure.
RL
Yellow
On
Indicates the port is in remote loopback mode.
AIS
Yellow
On
Indicates the framer detected an alarm indication signal.
OOF
Yellow
On
Indicates the framer detected out of frame.
LL
Yellow
On
Indicates the port is in local loopback mode.
18489
XMTR
RCVR
EN
RCLK FERF RL
AIS OOF LL
5
I
RCLK FERF RL
AIS OOF LL
LEDs
EN