Cisco CE-507 - Content Engine 507 User Manual - Page 8

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Chapter 1

Introducing the Content Engine

System Hardware Features

Internet or intranet to a distant server farm each time a request is made. The

Content Engine works in tandem with a router to handle web traffic, including

user requests to view pages and graphics (objects) on World Wide Web

servers—whether internal or external to your network.

To deploy Cisco Content Engines with Cisco Cache software within your existing

network, your network must support Cisco IOS software and the Web Cache

Coordination Protocol (WCCP). WCCP redirects Hypertext Transfer Protocol

(HTTP) traffic to a Content Engine, and the Content Engine responds to those

requests.

For example, when a user requests an object from a web server, the router first

sends the request to a Content Engine. If the Content Engine has a copy of the

requested object in storage, the Content Engine sends the user the object.

Otherwise, the Content Engine simultaneously obtains the requested objects from

the Web server, stores a copy of the objects (caches them), and forwards the

objects on to the user.

By caching web objects in this manner, the Content Engine can speed the

satisfaction of user requests when more than one user wants to access the same

objects. Caching in this manner also reduces the amount of traffic between your

network and the Internet, potentially improving your overall network

performance and optimizing your bandwidth usage.

System Hardware Features

Figure 1-3

shows the Content Engine front panel,

Figure 1-4

shows the

Content Engine rear panel with one AC power supply, and

Figure 1-5

shows the

Content Engine rear panel with one DC power supply.

Cisco Content Engine 500 Series Hardware Installation Guide

1-8

78-11199-03