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Author Archives: Larry Peterson
SDN in the Operator Network
I’ve written before about the power of delivering CDN and related services on virtualized commodity servers deployed deep in operator networks (see Extending the Cloud to the Network Edge and A Perfect Storm). The arguments in favor of such an … Continue reading
From Caches to CDNs
With an assortment of open source proxy caches readily available (e.g., NGINX, Varnish, ATS), it isn’t surprising to hear network operators ask about the value of commercial CDN solutions. After all, how hard can it be to build a CDN … Continue reading
Posted in CDN Architecture
Tagged ATS, CDN, CDN solution, commercial CDN, NGINX, open source proxy caches, Varnish, Verivue
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CDNI at IETF
Now a full-fledged IETF Working Group, CDN Interconnection (CDNI) is making sure and steady progress towards a common understanding of the problem space, but is treading precariously close to several slippery slopes. The risk to producing a practical set of … Continue reading
Transparent Caching: A Means Rather than an End
[This article originally appeared as a guest post on Broadband Traffic Management Blog.] Transparent caching is often viewed as something distinct from an Operator CDN—it is used to cache over-the-top (OTT) content from content providers and aggregators with which the … Continue reading
Posted in Uncategorized
Tagged CDN-assisted VoD, Operator CDN, transparent caching, Verivue
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Devices vs Services
Having spent my career in the IT world, where I’ve participated in the design of high-level services, including CDN-related technologies, I now find myself helping to make a case for why network operators should consider CDNs as a core element … Continue reading
Posted in CDN Architecture, Content Cloud Computing Strategies
Tagged CDN, content delivery banwith, Verivue
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Asynchronous Multicast
Multicast is widely regarded as an essential part of live (linear) content delivery, but there is an intriguing alternative. The case for multicast is straightforward—content delivered down a multicast tree traverses internal network links only once. But a second “content … Continue reading
Posted in CDN Architecture, HTTP Adaptive Streaming
Tagged asynchronous multicast, CDN, linear content delivery, Verivue
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A Perfect Storm
In an earlier post I argued that CDNs are the killer app that will pull the cloud to the edge of the network. The storyline is straightforward. The explosion of video is causing operators to deploy caches deeper in their … Continue reading
DNS Extension Good for Operator CDNs
The ongoing effort to add a client subnet extension to DNS has recently gained attention due to its being a center-piece of The Global Internet Speedup initiative. The idea behind the extension is simple – to include in DNS request … Continue reading
Posted in CDN Architecture
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Measurement Lab Tracking Broadband Usage
I often use this forum to talk about the impact of increasing video traffic on operator networks, but it usually goes unstated that the impact is a combination of more video content being made available and more users with sufficiently … Continue reading
Posted in Network Measurement
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Impressions from CDN World Forum
I just returned from the CDN World Forum with two take-aways… The first involves the relationship between CDNs and the Cloud, a topic that was front-and-center at the CDN World Forum for the simple reason that it was co-located with … Continue reading