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REVIEW DRAFT —CISCO CONFIDENTIAL
C H A P T E R 1
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
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Cisco 1800
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122331
This chapter describes the features and specifications of the router and includes the following sections:
•Product Description, page 1-1
•Hardware Features, page 1-2
•Chassis Views, page 1-5
•Interface Numbering, page 1-6
•Specifications, page 1-6
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.
Cisco 1805 DOCSIS Cable Router Hardware Installation Guide
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Chapter 1 Product Description
Hardware Features
REVIEW DRAFT—CISCO CONFIDENTIAL
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, page 1-2
•Built-In Interfaces, page 1-3
•Memory, page 1-3
•LED Indicators, page 1-4
•Chassis Ventilation, page 1-4
•Real-Time Clock, page 1-4
•Chassis Security, page 1-5
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
CISCO 1841
100-240 VAC- 1 A 50/60 Hz
SN: AAANNNNXXXX
122334
SN: AAANNNNXXXX
Note The serial number for Cisco 1805 cable router is 11 characters long.
Cisco 1805 DOCSIS Cable Router Hardware Installation Guide
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Chapter 1 Product Description
Hardware Features
REVIEW DRAFT —CISCO CONFIDENTIAL
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 |
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Description |
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Specification |
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SDRAM |
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128 MB, expandable to 384 MB; default is 128 MB |
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Flash memory |
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32, 64, or 128 MB; default is 64 MB |
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Boot or NVRAM |
2/4 MB flash memory |
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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.
Cisco 1805 DOCSIS Cable Router Hardware Installation Guide
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