Specifications

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Cisco Internet Streamer CDS 2.0-2.3 Software Configuration Guide
OL-13493-04
Chapter 1 Product Overview
Content Delivery System Architecture
In content-based routing, the Service Router redirects the request based on the Uniform Resource
Identifier (URI). Requests for the same URI are redirected to the same Service Engine, provided the
Service Engine’s thresholds are not exceeded.
The number of redundant copies of content is configurable for content-based routing. The same content
can be stored in more than one Service Engine if the number of redundant copies is set to more than one.
Redundancy is used to maximize the cache hit ratio. If redundancy is configured with more than one
copy, multiple Service Engines are picked for a request with the same URI hash.
Content-based routing is best suited for cache, prefetched, and live program requests in order to
maximize the cache hit ratio.
Request Redirection
The Service Router supports the following redirections:
Content Delivery System Manager
The Internet Streaming Content Delivery System Manager (CDSM) is a web browser-based user
interface. The Internet Streaming CDSM allows the administrator to configure, manage, and monitor
delivery services and devices in the Cisco Content Delivery System (CDS). Application programming
interfaces (APIs) are provided for backoffice integration with the Internet Streaming CDSM.
Authentication, Authorization, and Accounting
The Internet Streaming CDSM uses HTTPS to secure the administrator’s session. Multiple users can
perform administrative operations by using the Internet Streaming CDSM. The administrator can
configure certain users to have either view-only rights for monitoring the CDS, or full rights that allow
configuration changes as well as monitoring capabilities.
User accounts and groups can be added to the Internet Streaming CDSM and given roles and rights for
accessing configuration information. It is also possible to segregate and group objects and give access
to a limited group of users.
User authentication can be configured to use RADIUS servers when available, otherwise the Internet
Streaming CDSM provides its own authentication server.
The CDS-wide policy and status information is maintained in a relational database on the Internet
Streaming CDSM. This information is propagated and synchronized with all devices in the CDS
network.
• HTTP ASX Redirection Used if the requested file has an.asx extension. This redirection method
is used for Windows Media Technology.
• HTTP 302 Redirection Used if the protocol is HTTP and the file extension is not .asx. This is
the native HTTP redirection.
• RTSP 302 Redirection Used if the protocol is RTSP and the client is QuickTime or Windows
Media. This is the native RTSP redirection.
• RTMP 302 Redirection Used if the protocol is RTMP and the client is Adobe Flash Player,
Adobe Media Player, or Adobe Flash Lite Player.