Table 4
Front-Panel LEDs (continued)
LED
Color
ACT
Green
COL
Yellow
SLOTØ
PORTØ
Green
PORT1
–
Green
78-6169-02
Cards
Supported
LED Meaning
–
Blinks when there is network activity on the Ethernet port.
–
Blinks when there are packet collisions on the local
Ethernet network.
ISDN
On when the first ISDN B channel is connected.
Serial and
Blinks when data is being sent to or received from the port.
CSU/DSU
2-port serial
VIC-2E&M
VIC-2FXO
VIC-2FXS
Serial and
Off.
CSU/DSU
ISDN
On when the first ISDN B channel is connected.
2-port serial
Blinks when data is being sent to or received from the port.
VIC-2E&M
VIC-2FXO
VIC-2FXS
Cisco 1750 Router Hardware Installation Guide
Front-Panel LEDs
vii