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Cisco Content Delivery Engine 205/220/250/280/285/420/460/475 Hardware Installation Guide
Chapter 1 Overview of the Content Delivery Engines
Cisco VDS Internet Streamer Overview
The Service Engine can function as a Content Acquirer and Internet Streamer, or just as an Internet
Streamer.
Figure 1-1 shows the major elements of a VDS-IS network. The content delivery services determine how
content flows from ingest to distribution within the VDS-IS, and to the client devices. A delivery service
is a configuration defined by using the CDSM and consists of configuration parameters that dictate how
content is ingested and distributed, and what content is delivered to the client devices. Some of the
primary delivery service definition parameters are as follows:
• Origin server
• Service routing domain name
• Service Engines participating in the delivery service
• Service Engine designated as the Content Acquirer
The Content Acquirer is active on only one Service Engine in each delivery service.
Table 1-1 CDA Mapping to Functionality and IS CDSM
CDA Name Functionality
CDSM Device
Name
Internet Streamer (+ Content Acquirer) Ingest, distribution, and delivery Service Engine (SE)
Service Router Redirection of client requests for
delivery
Service Router (SR)
Internet Streaming Content Delivery
System Manager
Management CDSM
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