Cisco Systems CISCO1805-D LED Indicators, Chassis Ventilation, Real-Time Clock, Color, Location

Chapter 1 Product Description

Hardware Features

REVIEW DRAFT — CISCO CONFIDENTIAL

LED Indicators

Table 1-2summarizes the LED indicators that are located in the router bezel or chassis, but not in the interface cards installed in slot 0 or slot 1.

Table 1-2	Summary of Cisco 1805 DOCSIS Cable Router LED Indicators
LED		Color	Description	Location:
SYS PWR		Green	Router has successfully booted up and the software is functional.	Front
			This LED blinks while booting or in the ROM monitor.	panel
SYS ACT		Green	Blinking when any packets are transmitted or received on any	Front
			WAN or LAN, or during monitoring system activity.	panel
CF		Green	On when flash memory is busy. Do not remove the CompactFlash	Back
			memory card when this light is on.	panel
FDX (FE 0/0)		Green	On indicates full-duplex operation. Off indicates half-duplex	Back
			operation.	panel
100 (FE 0/0)		Green	On indicates a 100-Mbps link. Off indicates a 10-Mbps link.	Back
				panel
Link (FE 0/0)		Green	On when the router is correctly connected to a local Ethernet	Back
			LAN through Ethernet port 0.	panel
FDX (FE 0/1)		Green	On indicates full-duplex operation. Off indicates half-duplex	Back
			operation.	panel
100 (FE 0/1)		Green	On indicates a 100-Mbps link. Off indicates a 10-Mbps link.	Back
				panel
Link (FE 0/1)		Green	On when the router is correctly connected to a local Ethernet	Back
			LAN through Ethernet port 1.	panel
AIM		Green	On indicates presence of an AIM in the internal AIM slot.	Back
				panel

Chassis Ventilation

An internal three-speed fan provides chassis cooling. An onboard temperature sensor controls the fan speed. The fan is always on when power is applied to the router. Under most conditions, the fan operates at the slowest speed to conserve power and reduce fan noise. It operates at higher speeds when necessary in conditions of higher ambient temperature.

Real-Time Clock

On system power up, an internal real-time clock with battery backup provides the system software with time of day. This allows the system to verify the validity of a certification authority (CA) certificate. The backup battery is a socketed lithium battery. This battery lasts the life of the router under the operating environmental conditions specified for the router, and is not field replaceable.

Cisco 1805 DOCSIS Cable Router Hardware Installation Guide

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