Cisco 1805 DOCSIS Cable Router Hardware Installation Guide
Product Description
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Product Description

Table Of Contents

Product Description

Product Description

Hardware Features

Product Serial Number Location

Cisco Product Identification Tool

Built-In Interfaces

Memory

LED Indicators

Chassis Ventilation

Real-Time Clock

Chassis Security

Chassis Views

Interface Numbering

Specifications


Product Description


Cisco 1805 DOCSIS cable routers are fixed-configuration routers with LAN and WAN connections. The Cisco 1805 cable router supports three SKUs:

CISCO1805-D

CISCO1805-E

CISCO1805-D/K9

The Cisco 1805 DOCSIS cable router is a data-only device for desktop use. (See Figure 1-1.)

Figure 1-1 Cisco 1805 Cable Router

This chapter describes the features and specifications of the router and includes the following sections:

Product Description

Hardware Features

Chassis Views

Interface Numbering

Specifications

Product Description

The Cisco 1805 cable router ships with a Cisco cable modem high-speed WAN interface card (HWIC) installed in slot 0 and with a Cisco 10/100BASE-T Ethernet switch HWIC installed in slot 1. Both of these cards must be installed in order for the router to be operational. If either card is removed, the router will default to ROMMON state.

The Cisco cable modem HWIC installed in slot 0 is designed to be fully compliant with DOCSIS 2.0 standards in the United States, Europe, and Japan. The cable modem HWICs provide secure, high-speed connections over cable modem hybrid fiber-coaxial (HFC) cable network.

With the Cisco 10/100BASE-T Ethernet switch HWIC installed in slot 1, the Cisco 1805 cable router provides Layer 2 switching for traffic between one port on the HWIC and any other port on the same HWIC. This HWIC also supports Layer 3 traffic to and from the HWIC and any of the other platform interfaces. Traffic between different VLANs on the switch is routed through the router.

Hardware Features

This section describes the basic features of the Cisco 1805 cable router. It contains the following:

Product Serial Number Location

Built-In Interfaces

Memory

LED Indicators

Chassis Ventilation

Real-Time Clock

Chassis Security

Product Serial Number Location

The serial number label for Cisco 1805 cable router is located on the back of the chassis, below interface card slot 0. (See Figure 1-2.)

Figure 1-2 Serial Number Location


Note The serial number for Cisco 1805 cable router is 11 characters long.


Cisco Product Identification Tool

The Cisco Product Identification (CPI) tool provides detailed illustrations and descriptions showing where to locate serial number labels on Cisco products. The tool includes the following features:

A search option that allows browsing for models by using a tree-structured product hierarchy

A search field on the final results page which makes it easier to look up multiple products

Clearly identified end-of-sale products in results lists

The tool streamlines the process of locating serial number labels and identifying products. Serial number information expedites the entitlement process and is important for access to support services.

The Cisco Product Identification tool can be accessed at the following URL:

http://tools.cisco.com/Support/CPI/index.do

Built-In Interfaces

This section summarizes the interfaces available on the Cisco 1805 cable router:

Two Fast Ethernet ports (RJ-45 connectors)

High-speed console and auxiliary ports, up to 115.2 kbps each (RJ-45 connectors)

One USB port (version 1.1), intended for future use

Memory

The Cisco 1805 cable routers contain the following types of memory:

SDRAM—Serves two functions. It stores the running configuration and routing tables, and it is used for packet buffering by the network interfaces. The Cisco IOS software executes from SDRAM.

Flash memory—Stores the operating system software image, configuration files, and log files, implemented in an external CompactFlash memory card.

Boot/NVRAM—Serves two functions. It stores the ROM monitor, which allows you to boot an operating system software image from flash memory. It also stores the system configuration file and the virtual configuration register.

Table 1-1 lists the memory specifications for Cisco 1805 cable routers.

Table 1-1 Router Memory Specifications

Description
Specification

SDRAM

128 MB, expandable to 384 MB; default is 128 MB

Flash memory

32, 64, or 128 MB; default is 64 MB

Boot or NVRAM

2/4 MB flash memory



Note SDRAM and the flash memory are user upgradable, but the boot or NVRAM is permanently soldered to the router's motherboard and is not upgradable.


LED Indicators

Table 1-2 summarizes 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.
This LED blinks while booting or in the ROM monitor.

Front panel

SYS ACT

Green

Blinking when any packets are transmitted or received on any
WAN or LAN, or during monitoring system activity.

Front panel

CF

Green

On when flash memory is busy. Do not remove the CompactFlash
memory card when this light is on.

Back panel

FDX (FE 0/0)

Green

On indicates full-duplex operation. Off indicates half-duplex
operation.

Back 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
LAN through Ethernet port 0.

Back panel

FDX (FE 0/1)

Green

On indicates full-duplex operation. Off indicates half-duplex
operation.

Back 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
LAN through Ethernet port 1.

Back 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.


Note If the lithium battery in a Cisco 1805 router should fail, the router must be returned to Cisco for repair. Do not replace the battery yourself. Although the battery is not intended to be field replaceable, the safety agencies require the following warning to be included in this document.



Warning There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions. Statement 1015


Chassis Security

The chassis of the Cisco 1805 cable router is constructed with a Kensington security slot on the back panel. It can be secured to a desktop or other surface by using Kensington lockdown equipment.

Chassis Views

This section provides views of the front and back panels of Cisco 1805 cable routers, showing the locations of the power and signal interfaces, the interface card slots, and the status indicators.

Figure 1-3 shows the front panel of a Cisco 1805 cable router.

Figure 1-3 Front Panel of the Cisco 1805 Cable Router

1

System power (SYS PWR) LED

2

System activity (SYS ACT) LED


Figure 1-4 shows the back panel of a Cisco 1805 cable router.

Figure 1-4 Back Panel of the Cisco 1805 Cable Router

1

Input power connection

8

CompactFlash memory card slot

2

On/Off switch

9

CompactFlash LED

3

Slot 0 (cable modem HWIC)

10

AIM LED

4

Console port

11

USB port

5

Fast Ethernet ports and LEDs

12

Auxiliary port

6

Kensington security slot

13

Chassis ground connection

7

Slot 1 (4ESW HWIC)

   

Interface Numbering

Each individual interface (port) on a Cisco 1805 cable router is identified by a number. A Cisco 1805 cable router contains the following wide-area network (WAN) and local-area network (LAN) interface types:

Two onboard FastEthernet LAN interfaces

Slot 0 Cisco cable modem HWIC

Slot 1 Cisco 4-port 10/100BASE-T Ethernet switch HWIC

The numbering format for the slots is interface-type 0/slot-number/interface-number. Table 1-3 summarizes the interface numbering.

Table 1-3 Interface Numbering 

Slot Number
Slot Type
Slot Numbering Range
Example

Onboard ports

Fast Ethernet

0/0 and 0/1

interface fastethernet 0/0

Slot 0

HWIC

0/0/0 to 0/0/3

cable-modem 0/0/0

line async 0/0/0

Slot 1

HWIC

0/1/0 to 0/1/3

fastethernet 0/1/0

line async 0/1/0


Specifications

Table 1-4 lists the specifications for Cisco 1805 DOCSIS cable router.

Table 1-4 Cisco 1805 Cable Router Specifications 

Description
Specification

Dimensions (H x W x D)

1.73 x 13.5 x 10.8 in. (4.4 x 34.3 x 27.4 cm) without rubber feet

1.87 in. (4.75 cm) height with rubber feet

Weight

6.1 lb (2.77 kg)

Input voltage, AC power supply

100 to 240 VAC, autoranging

Frequency

47 to 63 Hz

Power consumption

20W maximum for an unloaded unit.
With two WICs and an AIM installed, power consumption will be
less than 50W.

Console and auxiliary ports

RJ-45 connectors

Operating humidity

5 to 95%, noncondensing

Operating temperature

32 to 104°F (0 to 40°C)

Nonoperating temperature shock

-13 to 158°F (-25 to 70°C) at 9° F (5° C)/minute minimum

Noise level

Normal operating temperature (< 78° F or 26°C): 34 dBa
From (78° F or 26°C) through (104° F or 40°C): 37 dBa
Higher than 104° F or 40°C: 42 dBa

Regulatory compliance

For detailed regulatory compliance information, see the
Regulatory Compliance and Safety Information for Cisco 1840
Routers
document available online.

Electromagnetic compatibility

FCC Part 15 Class A.

Safety compliance

UL 60950; CSA 60950; IEC 60950; EN 60950; AS/NZS 3260; NOM-019-SCFI-1998.


Table 1-5 lists the specifications for the Cisco 10/100BASE-T Ethernet switch HWIC LEDs.

Table 1-5 Cisco 10/100BASE-T Ethernet Switch HWIC LEDs

LED
Color
Definition
State

LNK

Green

Link status

ON = Link pulses detected

OFF = No link pulses detected

ILP

Green or amber

Inline power status

GREEN = Providing power to the device

AMBER BLINKING = Power delivery fault or denial

AMBER = Power administratively disabled

OFF = No external device detected, or inline power option not installed


Table 1-6 lists the specifications for the the Cisco cable modem HWIC LEDs.

Table 1-6 Cisco Cable Modem HWIC LEDs 

LED
State
Description

US

FLASHING

The cable modem is scanning for a DOCSIS channel and tries to lock on an upstream signal.

SOLID

The cable modem is locked on to the US DOCSIS channel.

ONLINE

FLASHING

The cable modem is establishing a connection to the router.

SOLID

The cable modem is synchronized with the router.

LINK

ON

A link is active when a CPE device is connected and the cable modem is not bridging data.

BLINKING

The cable modem is bridging data in the cable modem operational state.


Note The LINK LED does not pulse for data traffic that originates or terminates at the cable modem.


POWER

ON

The cable modem is powered on.

SOLID

It stays solid after the power-on self-test (POST).

RED

The self-test has failed.