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GUEST POST: Net Neutrality: Practical or Political?

By 3 March 2010 3 Comments

We have invited Jeff Turner, Principal/CTO of Interstream, to share his perspective on the technical implications (vs. the philosophical digressions and debates) of net neutrality.   He has gained this perspective over his many years as an executive at some of the top hardware firms that built the web (including Cisco and Novell).

Over the past several months, I’ve spent time in Washington D.C. attempting to better understand the participants and issues at the center of the Net Neutrality debate.  As in many Washington debates, while both sides are passionate about their positions, the challenge is to separate rhetoric from core concerns and identify specific areas where common ground exists as the basis to establish a consensus driven solution.  Moreover, since net neutrality concerns are not limited to within domestic boundaries, solutions designed to address net neutrality should work anywhere in the world. Thus, this blog seeks to engage commercial interests and public interest groups worldwide in meaningful discussion and work toward achievable consensus on  “net neutrality” and “reasonable network management” practices.  Achieving consensus definitions to these key terms is the first step in the process to toward arriving at workable solutions amongst all parties – domestic and international.

Toward that goal, we present a model for consideration that is straightforward.  As noted above, net neutrality attracts a wide spectrum of positions, from the more extreme and controversial, to the moderate that advocate reasonable practices through industry self-restraint or group consensus, which could be a starting point for consensus amongst Internet Service Provider (ISP) and public interest participants.

The right side of the diagram above, depicts the broad agreement that exists to reaffirm a consumer or business’ right to connect an IP-based (i.e. IP as in Internet TCP/IP protocol) device to a wired or wireless network.  In addressing the right to connect an IP device to the network, I take no position on concerns raised regarding any specific relationship and/or offering between a carrier and device manufacturer for example, between AT&T (T) and Apple (AAPL) – and whether such relationship or offering constitutes a violation of device exclusivity net neutrality principles.

This discussion’s focus is solely on IP-based connectivity and does not address ancillary wireless services that involve specific wireless carriers, hardware makers, or other value-added services above that Internet Protocol (IP) layer (this is not to say that wireless IP-based connectivity cannot or should not fall under the model). Communication services that offer IP-based connectivity should clearly allow for any IP-based device to access the Internet via a wired or wireless connection.   Therefore, a sustainable broadband solution need not address value-added relationships (e.g., the iPhone or new iPad) or specific carrier partnerships. Instead, our main focus is on preserving IP connectivity for end-to-end services across the network.  When the diagram says any device on the network, we infer that any IP-connected device can access other IP-level services on the other side of the network.

Reading to the left, pricing transparency refers to giving consumers greater information and clarity regarding their service beyond providing more definition of “up to” speeds. For example, advertisements promise 10 Megabit per Second (Mbps) broadband services for consumers’ homes or offices. Yet, descriptions of the actual speeds contained in terms of service typically reveal why, in most cases, these connections represent “up to” speeds.  These “up to” speeds result from many homes and businesses that share an upstream connection to the Internet’s backbone networks, while also sharing downstream 10 Mbps connections all through a much smaller link with limited bandwidth.  Under these network realities, American households and small businesses cannot possibly receive 10 Mbps everywhere, all the time, irrespective of what “up to” speed the broadband ISP represents in its marketing.

Therefore, the typical consumer or small business rarely receives the “advertised” 10 Mbps connection directly to the Internet, since the connection is shared amongst many in a neighborhood or region. This network configuration is actually similar to the old phone system, where many households and businesses shared common network equipment that supported the basic telephone.  While many consumers typically shared these phone connections, a high degree of reliability existed in getting a dial tone and making a call whenever you picked up the phone.  This superior reliability is due in large part to the engineers who designed and operated the network based on the fact that every person would not make calls at the same time.  To design the properly sized network, however, they used complex statistical models to predict peak call loads and call duration on how telephony connections were statistically shared.

The difference between the phone system and the Internet lies in the fact that an “Erlang model or formula” existed for the phone system.   The Internet, however, lacks a similar formula because no stable and reliable statistics exist by which ISPs can easily ascertain how much capacity they must offer in order to guarantee objective measures for service quality and provide a customer experience that meets or exceeds expectations.  In the telephone network, it is commonly known that Mother’s Day is the typical peak load period for use by residential consumers.  During this day, calling volumes above the statistical norm would often result in higher rates of a lack of dial tone or blocked calls.  Similarly, broadband networks can also be overwhelmed both on a daily and during certain peak usage hours. Without an Erlang formula for broadband, there is no way to quantitatively measure the broadband consumer’s quality of experience for the variety of applications they consume.

Achieving service transparency in the broadband world will require some form of statistical certainty. Any advertised residential or commercial Internet service offering should have a statistical probability. Formulating greater statistical certainty becomes more challenging as broadband networks become more tiered and managed.  For example, there are certain applications, such as peer-to-peer (P2P), which may be throttled back during periods of congestion so that other users do not receive a degraded experience.  Given these challenges, both consumers and the industry require specific proposals for offering quantifiable metrics for transparency under tiered (or network managed) service offerings. We should encourage industry and public interest groups to support integrating simple best-effort transparency metrics with a more sophisticated tiered approach. Industry and public interest groups have recently been making good progress in this area, and are attempting to reach consensus on how best to inform and represent the broadband consumer data and information on what they are purchasing in terms of performance, reliability, and application compatibility.

In addressing these issues, the topic of non-discrimination creates greater challenges– particularly in the context of the FCC’s NPRM’s paragraph 106. Traditionally, non-discrimination refers to offering a customer the same rate, terms and conditions that was previously offered to a similar (e.g. residential or commercial) customer. During the net neutrality debate, certain proponents advocating net neutrality regulation and legislation appear to conflate non-discrimination with a ban on access tiering.

How do these two issues overlap when parties presume that the broadband networks and Internet in general will, going forward, remain “flat” under a best-effort service model?  If broadband networks remain “flat” and no form of tiered (or network managed) services exist, then some would consider it discrimination if an application service provider (e.g. website operator) were to pay for enhanced or prioritized service to speed up one website over another. Some net neutrality advocates have encapsulated this notion in a sound bite that it would be “unfair for some web sites to receive preferential treatment to reach consumers over others due to special behind-the-scenes business deals struck with their broadband providers.” However, the sound bite is inaccurate because site operators don’t typically buy service directly from a broadband ISP. In fact, they host their content at some data center, which, in turn, purchases bandwidth from another ISP that ultimately reaches the consumer’s broadband network. Only firms with significant IP traffic, like Google (GOOG) or Microsoft (MSFT) have direct service agreements with broadband networks. On the other hand, small website operators that seek to distribute video from their sites typically buy content delivery network (CDN) services from providers such as Akamai (AKAM) or Limelight (LLNW). Those CDNs save costs in terms of bandwidth in addition to offering better performance due to the anomaly (or some might say “bug”) in the way the TCP protocol works over shorter latencies on the net today.

The average peer-to-peer downloads, whether feature-length movies or Linux distribution consumes an enormous amount of bandwidth that can take hours if not days. During that period, a consumer initiating this type of peer-to-peer download would consume the existing limited bandwidth and would interfere with a neighbor’s web surfing experience. The core issue is not whether speeding one web site over another is discriminatory, but rather how to offer service levels appropriate for different types of applications. All consumers are entitled to receive their desired quality of experience for each application they wish to use via broadband.  Neutral third party standards are a mechanism that can be implemented as a foundation to establish “non-discriminatory” tiered, managed networks, with bedrock rational industry practices that advance non-discrimination across all tiers of service. These practices must work hand-in-hand with the pricing and service level policies so that consumers and web site owners alike are informed more transparently of their levels of service.  By offering hard metrics for each application’s service level, and insuring that those metrics are reported via a neutral third party, the Internet’s current best-effort delivery model can bolster an objective means to prohibit discrimination.

Many advocates for “keeping the net neutral” argue against byte metering or bandwidth caps.  Some contend that if cable or telephone companies, for instance, could set overly low or restrictive limits on the amount of data consumed, then these same companies could directly encourage their subscribers to stick with their ordinary broadcast television service instead of seeking other competitive “over the top” Internet video offerings. As industry analyst Colin Dixon recently pointed out with regard to Netflix (NFLX), bandwidth caps would “kill the[ir] streaming business overnight.” Caps, particularly small ones, as proposed by Time Warner cable last year, could represent a barrier or delay to pervasive Internet video adoption. Countries like New Zealand and Australia already charge by the byte when it comes to Internet usage. Internet broadband application usage patterns in Australia and New Zealand are quite different from the rest of the world, where users are charged by the byte for consumption. Since Internet video streams and files tend to be quite large, users tend not to consume as much.

Arguments against best-effort usage bandwidth caps or charges come fundamentally down to economics. Wired broadband and wireless networks both share the characteristic of having high fixed capital cost outlays with the traffic flowing across those networks having little to no incremental cost of operation. Therefore, some net neutrality proponents make the case that charging for best-effort bandwidth under ordinary peering and transit agreements and infrastructure simply takes advantage of the consumer. However, charging for premium service (i.e. enhanced or prioritized) service might make sense since it involves deployment of new infrastructure and higher ongoing operational costs to guarantee those services.

Access tiering deserves a more detailed description of what it means and an explanation of how it has been conflated with some of the other net neutrality concerns.  Some economists, most notably Hal Varian and Jeffrey Mackie-Mason, have done a substantial amount of work on the potential extraction of “monopoly rents” (i.e., exorbitant prices) by carriers providing networks with access to subscribers. Thus the term “access network” describes networks with broadband or “last-mile” connections to consumers. “Tiering” refers to charging for different grades of service in order to reach those subscribers.

Speaking in broad terms, there are three pervasive viewpoints on the issue of access tiering. One set of economists argue that access tiering would harm the Internet by encouraging broadband and wireless network providers to promote congested networks in order to extract “monopoly rents.” A second set of economists argue that there has been no demonstration of harm to consumers or bandwidth buyers under the Internet’s current peering and transit regime. These arguments and econometric models that have been developed over the years don’t reflect industry realities.  A third group of economists regard access tiering as a potentially harmful practice that may require regulation in the future; however, until economic harm has been demonstrated, they believe that proscriptive ex ante regulation via the FCC or congressional action is not warranted.

Access tiering appears to be the core issue of debate amongst the two opposing net neutrality camps. There are those that wish to push for a ban on access tiering prior to demonstration of monopoly rent extraction, and those who either don’t believe it is an issue or feel it should be dealt with on a jurisdiction by jurisdiction basis. The issue, furthermore, has become tightly intertwined with the verbiage surrounding non-discrimination, transparency, network management practices, and tiering. The Internet is vastly different from telephony and today it is lightly regulated under Title I of the Communications Act. Hence, one of the key regulatory challenges is how to modernize the language used to define these concepts and shift focus to the technical realities that exist in today’s Internet using the Commission’s existing regulatory framework. The process to address some of these initial issues has already started within key groups and organizations including the FCC.

Some net neutrality advocates, however, seek to ban or disallow tiering or network management altogether. Advocates such as Timothy Wu and Susan Crawford have, in the past, taken a rather hard line. Their philosophical position is akin to the argument that cities, counties, and states should be required to ever increase the width of their highways so as to ensure that traffic, even during rush hour, can move at some minimum acceptable speed. Under this philosophy, “diamond lanes”, “truck lanes”, and toll-booths are inherently unfavorable to the common good; and the Internet, as a whole, should be managed a public good whereby those traffic engineering standards are in place so that any new application or service can be on a level playing field with all of the others. While the goal is laudable, it is also seems to ignore the rather simple fact that the Internet is a network of networks which are all independently operated by cooperating and competing business interests. Thinking of it like an interstate highway system is simply not apropos. In addition, certain applications do place different requirements on the network. Some applications require extremely low latency and packet loss while others can more robustly accommodate widely varying congestion conditions.

A third party, comprised of various members of the entire Internet ecosystem, is needed to marry the new (and proposed) rules of the road with the technical realities of the Internet and its surrounding consumer marketplace. By allowing the competing and cooperative business, academic, and government interests who all operate their own portions of the Internet to have the freedom to innovate and improve Quality of Service (QoS) standards while experimenting with different business models, the net will continue to flourish with a whole new set opportunities through unanticipated innovation.

Reconciling Transparency and Non-Discrimination

The most controversial issue for both sides of the debate is access tiering. This calls for a neutral party to begin the challenging process of creating a governance body that can effectively deal with the remaining issues of application compatibility, pricing, transparency and nondiscrimination. This body must remain neutral on the policy issues related to the access tiering economic model, no matter which framework or frameworks emerge globally. Today, we have the unique opportunity of establishing a process for self-regulation and the development of a global brand enabling all market participants to support their business interests while also supporting new entrants to innovate in ways yet imagined.

Jeff Turner
Principal & CTO
InterStream

3 Comments »

  • Brett Glass said:

    The above article is an earnest attempt at an analysis, but is mistaken on some key points. For example, it characterizes a requirement to be able to use “any device on any network” as a “moderate” requirement, when in fact it is a crippling and onerous one for fixed wireless broadband providers (WISPs) like myself. See my comments to the FCC at http://www.brettglass.com/nprmcomment.pdf to understand why.

  • Wes Felter said:

    Brett, can you fix that problem by putting the demarc on the Ethernet side of the CPE rather than the RF side? In other words, the customer can attach any device they want… as long as it’s Ethernet. This is how many cable networks work AFAIK, where the cableco owns and controls the modem but the customer owns the router.

  • Brett Glass said:

    The FCC rules say nothing about a “demarc” (point of demarcation). Remember, they’re written with cell phones in mind and ignore the existence of fixed wireless providers like mine. A good example of a way in which the rules would hinder innovation and ossify business models and technology.