In 1949 a Bell Laboratory researcher, Claude Shannon, published a paper on a new science of "Information". Bell Labs had sponsored the research with the goal of improving phone networks but was not prepared to embrace the full implications of the new science which made explicit the distinction between information in the information sense and information encoded in numbers or bits... more
Yesterday morning (26-April-2011), in US Bankruptcy Court for the District of Delaware, Judge Kevin Gross signed an order authorizing Nortel's sale of IPv4 addresses to Microsoft. This is an important moment for the Internet community, as it represents the beginning of a new market-based mechanism for the distribution of scarce IPv4 address resources. As the various Regional Internet Registry (RIR) organizations exhaust their supply, traditional "needs-based" distribution will become impossible. more
Recently I was asked for my opinion on Google paying France Telecom (FT) to deliver traffic into FT's network, i.e. Google paying to peer with FT. I wasn't aware Google pays FT. I don't even know if it's true. But I do know this is a topic fraught with misunderstandings. Also, if there is a "problem" here, the problem is one of competition (or lack thereof) in portions of the French broadband access market. It is not a problem that can be or should be fixed by "network neutrality" regulations or legislation. more
Exponential growth of networks combined with the complexity introduced by IT initiatives e.g. VoIP, Cloud computing, server virtualization, desktop virtualization, IPv6 and service automation has required network teams to look for tools to automate IP address management (IPAM). Automated IPAM tools allow administrators to allocate subnets, allocate/track/reclaim IP addresses and provide visibility into the networks. Here are some examples of what a typical IPAM tool can do... more
On Monday, 11 April 2011, Level 3 announced they had entered a definitive agreement to acquire Global Crossing. According to the Renesys Market Intelligence rankings, this merger would bring together the world's #1 and #2 global providers, with over half the Internet market on earth dependent on the combined entity. If the deal gained regulatory approval in the US and elsewhere today, how would the Internet provider landscape change? We'll answer that question in this blog, giving the proposed union a fictional name of Level Crossing for the purposes of our discussion. more
Over the last ten years we have heard a lot about edge-based services. These were needed to enable the operation of applications at the edge of the network, as the lack of available bandwidth capacity made it difficult to do so over the core network. However, with the prospect of limitless bandwidth the design of the network is changing again. more
The broadband sector, like the wireless sector, is one of the strongest growth areas of telecommunications. Unlike most OECD countries, where DSL tends to dominate, the majority of subscribers in the US fixed broadband market are cable subscribers. During 2010 the gap continued to widen as the cable companies accounted for 70% of new broadband subscribers compared to the telcos' 30%. Although new broadband networks such as FttH and WiMAX are being widely deployed, broadband competition in each region is still generally limited to one DSL and one cable operator. more
Research from Infonetics shows that last year was a strong year for data centre network equipment sales, due to a rebound from bare-bones 2009 spending levels and, more importantly, fundamental trends favouring investments in the data centre, such as the explosion of content and traffic, use of virtualization, and increasingly, cloud-based services and architectures. more
Images of clouds have been used when discussing networks for quite some time. When traditional telecoms companies were selling point-to-point circuits a drawing of a cloud was sometimes used. The cloud symbol helped indicate the provider?s domain of responsibility, effectively hid the internal complexity of the network and focused on the end user. This was all fine when the product offered was an end-to-end circuit. more
I don't know about you, but I'm starting to think that DNSSEC being so hot these days is a mixed blessing. Yes, it's wonderful that after so many years there is finally broad consensus for making DNSSEC happen. But being so prominent also means the protocol is taking shots from those who don't want to make the necessary software, hardware and operational modifications needed. And DNSSEC has taken some shots from those who just want to be contrarian. more
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