Specifications

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Cisco TV CDS 2.5 ISA Software Configuration Guide
OL-24788-01
Chapter 1 Product Overview
Content Delivery System Architecture
Streamer
A Streamer server receives content from the Vault and delivers that content to subscribers. Streamers can
be of different capacity, depending on the needs of the network, and have different applications,
depending on the type of content being delivered. Currently, the highest-capacity Streamer can
simultaneously stream approximately 2500 streams of MPEG-2 TS standard definition VOD. Streamers
can be colocated with Vaults or distributed to remote locations. The Stream Group is responsible for the
personalization and streaming of content in response to user requests.
Caching Node
The Caching Node provides a 10-Gbps throughput to facilitate the distribution of content from the Vaults
to the Streamers. The Caching Nodes allow for the ability to create a tier-based hierarchy in the CDS.
Caching Nodes are deployed in VVIs. Vaults can be strategically located for storing content on a national
network, while the Streamers are located in a regional network. The Caching Node can be colocated with
the Vaults or distributed closer to regional locations across an IP or Ethernet network. A Cache Group
consists of several Caching Nodes that divide the responsibility for distribution among the members of
the group.
The Caching Nodes use CCP to communicate with the Vaults and Streamers. Alternatively, the Caching
Nodes can use HTTP instead of CCP to communicate with Streamers.
Integrated Streamer-Vault
The Integrated Streamer-Vault (ISV) server offers the functionality of both a Vault and Streamer in one
server.
The ISV server ingests content delivered over a standard interface, performs whatever processing is
required, and stores the processed content reliably on disk. An ISV array consists of a scalable number
of ISV servers that divide the responsibility for ingest, storage, and streaming among the members of the
array.
Content Delivery System Manager and Virtual Video Infrastructure Manager
The Content Delivery System Manager (CDSM) and the Virtual Video Infrastructure Manager (VVIM)
are each a browser-based user interface accessible by a web browser program and designed to manage a
TV CDS or a TV VVI network.
The CDSM provides centralized management functions for the TV CDS, including configuration,
monitoring, troubleshooting, reporting, and maintenance.
The VVIM provides centralized management function for the TV VVI, including configuration,
monitoring, troubleshooting, reporting, and maintenance. The VVIM in a centralized domain
management configuration manages the Vaults, Caching Nodes, and Streamers, The VVIM in a
split-domain management configuration manages the Vaults and Caching Nodes, while the Streamers are
managed by the Stream Manager. For more information about split-domain management, see the “TV
VVI Management” section on page 2-6.