Specifications

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Cisco Internet Streamer CDS 2.0-2.3 Software Configuration Guide
OL-13493-04
Chapter 2 Network Design
Delivery Service
Figure 2-2 Delivery Service Distribution Tree Example
The Cisco CDS supports two types of delivery services:
1. Prefetch/caching delivery services
For prefetch delivery services, called content delivery services in the CDSM, content is forwarded
from Service Engine to Service Engine through the delivery service distribution tree until all Service
Engines in the delivery service have received it. The delivery service distribution architecture
provides unicast content replication using a hop-by-hop, store-and-forward methodology with the
forwarder Service Engines systematically selected on the basis of the manually configured location
hierarchy. For caching delivery services, the content need not be fully stored before forwarding.
2. Live delivery service
The live delivery services are only used for managed live stream splitting. The prefetch/caching
delivery services are used for prefetch ingest, dynamic ingest, and hybrid ingest.
There are two methods that can be used to configure a delivery service:
1. Specifying the content by using an externally hosted Manifest file.
2. Specifying the content by using the Internet Streaming CDSM.
The Internet Streaming CDSM provides a user-friendly interface for adding content and configuring
crawl tasks. All entries are validated and a Manifest file is generated. The Internet Streaming CDSM
offers the most frequently used parameters, a subset of the Manifest parameters. For a complete set
of parameters, use a Manifest file.
The following sections describe the main building blocks of a delivery service:
• Origin Servers
• Manifest File
• Content Acquirer
• Internet Streamer
211782
San Francisco - Financial
Origin
server
Content Aquirer
South San Francisco
San MateoDaly City
San Francisco - Mission Walnut CreekPleasant Hill
San Francisco -
Bay View District
San Ramon
Concord
Tier 1
Tier 2
Tier 3
Tier 4
Half Moon Bay