Location
Description
LED Color
Port
I/O side
Green On
—
Console
enabled.
Green and Amber
Console/AUX
Amber On
—
AUX
enabled.
I/O side
Off
—
No USB device
discovered.
Green
USB Console
On
—
USB device
discovered.
I/O Side
Off: No USB device
discovered.
Green
USB
On: USB device
discovered.
Reset Button
The actuation of the Reset button is only recognized during Rommon boot, that is, as the router comes to the
Rommon prompt.
The Reset button does not require much force to be actuated. The Reset button should be actuated only with
a small implement such as the tip of a pen or a paper clip. When the Reset button is pressed at startup, the
system LED will turn green.
For more information, see the "Reset Overview" section of the Cisco 1100 Series Software Configuration
Guide.
Slots and Interfaces
About Slots, Subslots, and Port Numbering
Cisco 1100 Series ISRs do not support physical and removable modules. It has only one slot, that is, slot 0.
Slot 0 is the motherboard and not removable. It is reserved for integrated ports. The front panel GE ports (or
native interface ports) always reside in slot 0 and bay 0. The ports are called Gigabitethernet 0/0/0 and
Gigabitethernet 0/0/1.
Each interface type has its own 'bay', and port is a unique port of an interface type.
In most cases, the router designates its interfaces using a 3-tuple notation that lists the slot, bay, and port. The
3-tuple value is zero based. An example of a 3-tuple is 0/1/2. This refers to slot 0, the second bay in slot 0
(the first bay is 0 so the second bay is 1), and the third port in bay 1. See this section for more examples.
Hardware Installation Guide for the Cisco 1100 Series Integrated Services Router
10
Overview of Cisco 1000 Series Integrated Services Routers
Slots and Interfaces