1-28
Hardware Installation Guide for the Cisco 4000 Series Integrated Services Router
OL-32185-02
Chapter 1 Overview of Cisco 4000 Series ISRs
Hardware Features of Cisco 4000 Series ISRs
FAN Fan Status Green All fans are operating. Bezel side All models
Amber One fan has stopped working.
Blinking
Amber
Two or more fans have stopped working, or the fan
tray has been removed.
Off Fans are not being monitored.
L
(left)
Ethernet
ports 0 and 1
Link
Green Ethernet cable is present and link is established with
other side or PoE power is enabled for this port.
I/O side All models
Off No link.
S
(left)
Speed of
Ethernet
ports 0 and 1
Green
Blinking
Blink frequency indicates port speed:
• 1 blink+ pause - FE or GE port operating at 10
Mb/s
• 2 blinks + pause - FE or GE port operating
at100 Mb/s
• 3 blinks + pause - GE port operating at1000
Mb/s
I/O side All models
Off No link or a non-Ethernet 802.3af/t capable device
is plugged in and powered over the PoE.
L
(right)
Ethernet
ports 2 and 3
1
and
Management
Ethernet
Link
Green Ethernet cable is present and link is established with
other side.
I/O side All models
Off No link.
S
(right)
Ethernet
ports 2, and
3
1
and
Management
Ethernet
Speed
Green Blink frequency indicates port speed:
• 1 blink+ pause - FE or GE port operating at 10
Mb/s
• 2 blinks + pause - FE or GE port operating
at100 Mb/s
• 3 blinks + pause - GE port operating at1000
Mb/s
I/O side All models
Off No link
SFP EN Port 0, 1, 2,
and 3 Enable
Green Present and enabled. I/O side All models
1
Amber Present with failure.
Off Not present.
SFP S Status of
Ports 0, 1, 2,
and 3
Blinking
Green
Blinking frequency indicates port speed. See the
definition for the S LED.
I/O side All models
1
Amber Initialized with error.
Off Not present.
Table 1-2 LED Descriptions (Applies to the Cisco 4451-X ISR, Cisco 4431 ISR, and Cisco 4351 ISRs) (continued)
LED Represents Color Description Location Available On
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