The figure shows how an Intelligent CDN could be created in MSO/cable network architectures by integrating MediaWarp (yellow circles) on existing network elements such as VOD servers, CMTS and QAM gateways.

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Intelligent CDN Framework

MediaWarp’s intelligent CDN framework supports a hierarchical cluster-based architecture that automatically balances load across all the CDN edge nodes without any manual intervention. New nodes can be added to the cluster in a seamless fashion. Moreover, ‘hot content’ is migrated automatically to SSD and RAM storage to ensure low latency. The cluster architecture also prevents hotspots and ensures high availability even during individual node failures. The hierarchical, cluster-based CDN architecture can be used to deploy an Origin, Mid-tier and Edge caching solution. As shown in the figure, the edge VOD servers can be used to cache and deliver premium VOD content in a distributed fashion, closer to the end user. Integrating transparent caching functionality in next-generation CCAP (Converged Cable Access Platform) elements would serve to significantly reduce the volume of traffic transiting the metro rings, saving on expensive router and switch ports.
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Bandwidth Efficiency

As video streaming and rich media downloads continue to flood cable networks with no end in sight, cable operators can benefit by deploying transparent Internet caching and video pacing inside their networks. For example, some cable operators have realized bandwidth savings upwards of 35% by deploying transparent caching functionality close to the location of the CMTS. Not only are the network infrastructure costs reduced due to reduced router ports, the users also see significantly higher throughput – since the content is cached closer to the end user.
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Ease of Integration

MediaWarp can be seamlessly integrated on blades in existing network elements, or deployed on inexpensive, industry standard server and storage solutions. MediaWarp is processor-independent and can be ported onto a Linux environment in less than four weeks. MediaWarp has also implemented an innovative plug-in architecture that allows 3rd parties to develop and integrate plug-ins in order to implement customer-specific features.
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