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
With pass-through authentication, the Windows Media Engine establishes a tunnel between the client
and the origin server so that the origin server can authenticate the client.
Bandwidth Management
Bandwidth management of Windows Media content can be controlled by setting limits for incoming and
outgoing bandwidth and session bit rate and Fast Start maximum bandwidth. In addition, in the case of
live streaming, contributing origin servers can by identified to allow incoming content to exceed the
bandwidth check to support high demand scenarios. The Windows Media bandwidth management
capabilities are described in Table 1-3.
Policy Server Integration
The Windows Media Engine uses HTTP and RTSP to send start, stop, and pause messages to the policy
server.
Movie Streamer Engine
Note In Release 2.0, Movie Streamer Engine was in a demonstration state for live streaming, prefetched,
cached, and dynamically cached content.
In Releases 2.1 on, live streaming is in full production. Prefetched, cached, and dynamically cached
content remain in a demonstration state.
For details of live streaming performance for Movie Streamer Engine, please refer to the Release 2.1
performance bulletin.
The Movie Streamer Engine is an open-source, standards-based, streaming server that delivers hinted
MPEG-4, hinted 3GP, and hinted MOV files to clients over the Internet and mobile networks using the
industry-standard RTP and RTSP. Hinted files contain hint tracks, which store packetization information
that tell the streaming server how to package content for streaming.
Table 1-3 Bandwidth Management Capabilities
Bandwidth
Management Description
Incoming
Bandwidth
The bandwidth for Windows Media content coming into the Service Engine, from
either an upstream Service Engine or from the origin server.
Outgoing
Bandwidth
The bandwidth for streaming Windows Media content to the end user from the
Service Engine.
Incoming Session
Bit Rate
The maximum bit rate per session that can be delivered to the Service Engine from
the origin server or upstream Service Engine.
Outgoing Session
Bit Rate
The maximum bit rate per session that can be delivered to a client.
Incoming
Bandwidth
Bypass List
The list of identified hosts allowed to bypass the incoming bandwidth check for
broadcast or multicast live content.
Fast Start
Maximum
Bandwidth
Maximum bandwidth allowed per player when Fast Start is used to serve packets to
each player. Increased bandwidth initially used by the Fast Start feature can
overburden a network if many players connect to the stream at the same time. To
reduce the risk of network congestion caused by the Fast Start feature, limit the
amount of bandwidth the Fast Start feature uses to stream to each player.