Cisco 1900 Series Integrated Services Router Hardware Installation Guide

Safety Warnings for Finland, Norway and Sweden

Warning statement 1017 applies to the countries of Finland, Norway, and Sweden.

Warning This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security. Statement 1017

Product Serial Number Location

The serial number and common language equipment identifier (CLEI) label for the Cisco 1905 and Cisco 1921 router is located on the rear of the chassis. (See Figure 1-6.) The product ID (PID) label for the Cisco 1905 and Cisco 1921 series routers is located on the bottom of the chassis. (See Figure 1-8.) The serial number label for the Cisco 1940 series routers is located on the rear of the chassis on a pull-out tab. (See Figure 1-8.)

Figure 1-6 Serial Number and CLEI Location on Cisco 1905 and Cisco 1921 Routers

Figure 1-7 PID and Compliance Label on Cisco 1905 and Cisco 1921 Routers

Figure 1-8 Serial Number, PID/VID, and CLEI Number Location on Cisco 1940 Series Routers

Note The serial number for Cisco 1900 series routers 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. It includes the following features:

• A search option that allows browsing for models using a tree-structured product hierarchy
• A search field on the final results page making it easier to look up multiple products
• End-of-sale products are clearly identified 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

Table describes the interfaces available on the Cisco 1900 series routers.

Note Either the RJ-45 console port or USB console port may be used. They can not both be used at the same time.

Removable, Interchangeable, and Optional Modules

Some modules can be installed either by inserting them into slots on the chassis, or by opening the chassis and plugging them into connectors inside. The WLAN is factory installed.

• CompactFlash memory and enhanced high-speed WAN interface cards (EHWICs) fit into slots on the Cisco 1940 series chassis, and can be installed or removed without opening the chassis.
• A connector inside the Cisco 1940 series chassis accommodates an optional field installable Internal Service Module (ISM). See Installing and Upgrading Internal Modules and FRUs in Cisco 1900 Series ISRs.
• The ISM connector inside the Cisco 1941W chassis accommodates an optional factory installed wireless LAN card. The WLAN card is permanently installed in the ISM connector.
• Cisco 1940 series ISRs feature an optional upgrade to the internal power supply providing in-line power (802.3af-compliant Power-over-Ethernet (PoE) and Cisco standard inline power) to optional integrated switch modules. The Cisco 1905, and Cisco 1921 have an external feed for PoE. (See Figure 1-2.)
• There are no user-installable or replaceable modules on the Cisco 1905 or Cisco 1921 routers. The chassis cover should never be removed.

Caution Power off the PoE before installing an EHWIC in the Cisco 1905 and Cisco 1921 ISRs.

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Table 1-2 summarizes the optional modules:

Memory

Cisco 1900 series routers contain the following types of memory:

• DRAM—Stores the running configuration and routing tables and is used for packet buffering by the network interfaces. Cisco IOS software executes from DRAM memory.
• Boot/NVRAM—Internal flash memory. Stores the bootstrap program (ROM monitor), the configuration register, and the startup configuration.
• Flash memory—External flash memory (1940 series only). Stores the operating system software image.

Table 1-3 summarizes the memory options for Cisco 1900 series routers. The default memory numbers for RAM represent the minimum usable memory. You can install additional RAM in multiples of the default amount, up to the maximum amount on the Cisco 1940 series ISRs. The Cisco 1905 and Cisco 1921 have factory installed, fixed memory modules and no expansion slots.

LED Indicators

Table 1-4 summarizes the LED indicators that are located in the router bezel or chassis, but not on the interface cards. Not all models have every LED.

Chassis Ventilation

An internal 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 the higher speeds when necessary under conditions of higher ambient temperature. See the “Chassis Airflow Diagram” section.

Real-Time Clock

An internal real-time clock with battery backup provides the system software with time of day on system power up. This allows the system to verify the validity of the certification authority (CA) certificate. The Cisco 1900 series router has a 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 1900 ISR should fail, the router must be returned to Cisco for repair.

Although the battery is not intended to be field-replaceable, the following warning must be heeded:

Warning Dispose of used batteries according to the manufacturer’s instructions. Statement 1015

Chassis Security

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

Wireless LAN Connectivity

The embedded Wi-Fi CERTIFIED™, 802.11a/b/g/n-compliant wireless access point is preinstalled in the router as an optional feature. The Cisco 1900 routers support both autonomous and unified features and network configurations.

The wireless access point does not have an external console port for connections. To configure the wireless device, you must use a console cable to connect a PC to the host router’s console port as described in “Cable Information and Specifications for Cisco 1900 Series Routers,” and then use the Cisco IOS command-line interface (CLI) to access the interface.

Table 1-5 describes the radios and antennas for the wireless routers.

Baud Reset Button

The Cisco 1905 and Cisco 1921 ISRs have a baud reset button on the back panel. When the button is pressed during power on, ROMMON resets the router to the default console port configuration. If the baud reset button is pressed for longer than 30 seconds, the router defaults to the read-only ROMMON image. The default console port configuration is 9600 baud, 8 data bits, 1 stop bit, no parity, and flow control is set to none.