Chapter 2 Overview of Cisco 1800 Series Routers (Modular)

Hardware Features

Table 2-1

Cisco 1861 Integrated Services Router: Interfaces

 

 

 

 

 

 

Description

 

Label

 

Value in Software Configuration

 

 

 

 

(Factory Option) VIC: FXO*

VIC2-2FXO and 0-1

 

port 0/2/0 to 0/2/1

 

 

VIC2-4FXO and 0-3

 

or

 

 

 

 

port 0/2/0 to 0/2/3

 

 

 

 

(Factory Option) VIC: FXS*

VIC3-2FXS/DID and 0-1

 

port 0/2/0 to 0/2/1

 

 

VIC-4FXS/DID and 0-3

 

or

 

 

VIC3-4FXS/DID and 0-3

 

port 0/2/0 to 0/2/3

 

 

 

 

 

* Only one optional VIC can be factory installed in a Cisco 1861 Integrated Services Router.

Removable and Interchangeable Modules

Various optional modules can be installed in the router to provide specific capabilities. These 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 chassis.

Flash memory and interface cards fit into slots on the chassis and can be installed or removed without opening the chassis.

There are three types of interface cards for the 1800 series modular routers:

WAN interface cards (WICs)

Voice WAN interface cards (VWICs—in data mode only on the Cisco 1841)

High-speed WAN interface cards (HWICs)

The following components plug into connectors inside the chassis and can be installed or removed only by opening the chassis:

Advanced integration module (AIM)

Synchronous dynamic RAM (SDRAM) small-outline dual in-line memory module (SODIMM) Table 2-2summarizes the optional modules:

Table 2-2

Summary of Cisco 1800 Series Removable and Interchangeable Modules

 

 

 

 

 

 

Model

 

CompactFlash Memory

Interface Cards

AIMs

SDRAM SODIMM

 

 

 

 

 

 

Cisco 1841

 

1

2 single-wide cards

1

1

 

 

 

 

 

 

Memory

Cisco 1800 series 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. Cisco IOS software executes from SDRAM.

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

Cisco 1800 Series Routers (Modular) Hardware Installation Guide

 

OL-5876-03

2-5

 

 

 

Page 23
Image 23
Cisco Systems CISCO1841-HSEC/K9-RF manual Removable and Interchangeable Modules, Memory

CISCO1841-HSEC/K9-RF specifications

The Cisco Systems CISCO1841-HSEC/K9-RF is a versatile and robust router designed to meet the demands of small to medium-sized businesses and branch offices. This model is part of the Cisco 1800 Series Integrated Services Routers, which are known for their performance, security features, and scalability, making them ideal for organizations seeking to enhance their network infrastructure.

One of the main features of the CISCO1841-HSEC/K9 is its modular architecture. This design allows businesses to customize and expand their networks according to changing needs by adding various modules and interfaces. The router supports multiple WAN interfaces, which include serial, Ethernet, and DSL, providing flexible connectivity options to accommodate various networking scenarios.

The CISCO1841-HSEC/K9 also boasts an integrated security architecture. This router is equipped with advanced security features, including firewall capabilities, VPN support, and intrusion prevention systems. These technologies ensure that data is protected while being transmitted across the network. The built-in security features help organizations safeguard sensitive information against potential threats and cyberattacks.

In terms of performance, the CISCO1841-HSEC/K9 is powered by a high-speed processor and dynamic routing capabilities, which allow it to efficiently handle high volumes of traffic without compromising performance. The router supports various routing protocols, including EIGRP, OSPF, and BGP, facilitating seamless data flow and efficient route management.

Another noteworthy characteristic of the CISCO1841-HSEC/K9 is its support for voice and video services. This capability enables businesses to deploy unified communications applications, such as VoIP and video conferencing, enhancing collaboration among team members and improving overall productivity.

Moreover, the router is designed for easy management and monitoring. Cisco’s IOS software provides a user-friendly interface, allowing network administrators to configure, operate, and troubleshoot the network with ease. The router also supports Cisco’s Smart Install feature for simplified deployment and management.

In summary, the Cisco Systems CISCO1841-HSEC/K9-RF is a powerful and adaptable router that combines security, flexibility, and performance. Its modular design, robust security features, support for various routing protocols, and capabilities for multimedia applications make it a compelling choice for businesses looking to enhance their network infrastructure while addressing current and future demands.