Cisco 2821 Series Информационный лист - Страница 3

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APPLICATIONS

Figure 2

Secure Network Connectivity with Converged IP Communications

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Architecture—Features and Benefits

The Cisco 2800 Series architecture has been designed specifically to meet the expanding requirements of enterprise branch offices and small-to-

medium-sized businesses for today's and future applications. The Cisco 2800 Series provides the broadest range of connectivity options in the

industry combined with leading-edge availability and reliability features. In addition, Cisco IOS Software provides support for a complete suite

of transport protocols, Quality-of-Service (QoS) tools, and advanced security and voice applications.

Table 1.

Architecture—Features and Benefits

Feature

Modular architecture

Embedded security

hardware acceleration

Increased default memory

Integrated dual Fast Ethernet

or Gigabit Ethernet ports

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Benefit

A wide variety of LAN and WAN options are available. Network interfaces can be upgraded in the field

to accommodate future technologies.

Several types of slots are available to add connectivity and services in the future on an "integrate-as-you-

grow" basis.

The Cisco 2800 supports more than 90 modules, including most of the existing WICs, VICs, network

modules, and AIMs (Note: the Cisco 2801 router does not support network modules).

Each of the Cisco 2800 Series routers comes standard with embedded hardware cryptography

accelerators, which when combined with an optional Cisco IOS Software upgrade help enable WAN

link security and VPN services.

The Cisco 2811, 2821, and 2851 Routers offer 64 MB of Flash and 256 MB of DRAM memory.

The Cisco 2801 router comes with 64 MB Flash and 128 MB DRAM memory.

The Cisco 2800 Series provide two 10/100 on the Cisco 2801 and Cisco 2811 and two 10/100/1000 on

the Cisco 2821 and Cisco 2851

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