Cox Communications will push broadband speed upgrades as high as a gigabit to customers over an upgraded network heavy on fiber and much lighter on copper coaxial cable.

In an effort to stay competitive and reduce operational and maintenance costs, Cox will begin major upgrades of its cable plant, removing as much copper and as many signal amplifiers as possible to simplify upkeep and make future upgrades simpler.

Cox chief technology officer Kevin Hart told Light Reading he wants to push fiber optics deeper into Cox’s network, bringing optical fiber closer to the neighborhoods where customers live and work. This will allow Cox to reduce the number of customers sharing the same bandwidth. It also eases Cox’s forthcoming upgrade to DOCSIS 3.1 technology.

“We’re […] taking fiber deeper as a part of our multi-year network transformation plan, working towards a node-plus-zero architecture that allows us to take fiber to the home, and allows us to bring gigabit speeds on demand. And of course we’re aligning around DOCSIS 3.1,” Hart said.

Cox is planning its first rollout of DOCSIS 3.1, which gives cable companies to ability to offer gigabit download speeds, in the fourth quarter of this year. It will choose one of the smaller communities it serves as a test market. If all goes well, Cox will push DOCSIS 3.1 across all of its markets between 2017-2020, likely focusing on Phoenix and San Diego first.

Cox is evaluating DOCSIS 3.1 cable modems from a number of vendors, with Arris and Technicolor likely contenders.

Cox continues to support data caps and usage-based billing in some of its markets and has become one of the stingiest with data allowances:

Customers in Cleveland, Ohio are the unluckiest of all, because they also face an overlimit fee when they exceed their allowance: $10 for each additional 50GB block of data. Some customers in Cleveland’s downtown area have found a loophole around the data cap, however. If they access the Internet over Cox WiFi and Cable WiFi hotspots, it does not count against one’s allowance at this time.

If you own or lease a Motorola/Arris SurfBoard 5100, 6121, or 6141 cable modem, security researchers have uncovered an annoying vulnerability that could expose you to a denial of service attack.

David Longenecker first discovered the flaw with the world’s most popular cable modem — the SB-6141, a highly recommended DOCSIS 3 model. The firmware does not password protect access to the cable modem’s configuration menu, accessible by visiting 192.168.100.1 in a web browser.

In addition to technical information about the modem and the cable system’s current cable broadband configuration, there are two user accessible reset buttons, one to reboot the modem and another to reset it to its original factory settings. Rebooting the modem will disrupt your Internet connection for under a minute, but doing a factory reset could bring the modem offline until someone reaches the cable company to request the modem be reauthorized. An individual with nefarious intent can repeatedly reset the modem, bringing the user offline again and again.

SB6141 is a DOCSIS 3 modem

The Houston Chronicle explains how this could become a widespread problem:

Included within this interface is the ability to reset the modem. A user can be tricked into clicking on a simple link that will reboot the SB6141, and you can see a proof of concept here. Note that if you have one of these modems with this flaw, and you click the link, your modem WILL reboot.

Normally, you’d have to be sitting at a computer on the same network as the modem to trigger a reboot. But the link above takes advantage of the fact that you can mask a local Web page address as an image file. As Longenecker describes it:

Did you know that a web browser doesn’t really care whether an “image” file is really an image? Causing a modem to reboot is as simple as including an “image” in any other webpage you might happen to open – which is exactly the approach taken on the RebootMyModem.net proof of concept:

<img src=”http://192.168.100.1/reset.htm”>

Of course it’s not a real image, but the web browser doesn’t know that until it requests the file from the modem IP address – which of course causes the modem to reboot. Imagine creating an advertisement with that line of code, and submitting it to a widely-used ad network…

Advanced users can go into their router’s configuration page and block access to the IP address 192.168.100.1 (the modem’s configuration page) for anyone inside their network. That step prevents you or anyone else on your network from accidentally clicking a link that tricks your modem into rebooting. But most users will probably wait until Arris has distributed firmware updates that cable operators will eventually apply to correct this vulnerability. The upgrade will occur in the background and most users will never notice it.

Fixed (wired) broadband is now the most important revenue component of the TV-Internet-Phone package.

Despite ordering 41 percent more downstream network equipment in 2015 than the year before, cable operators enjoyed a 3% drop in broadband equipment expenses, according to researcher SNL Kagan.

While your cable operator blames the cost of upgrades and usage growth for your latest broadband rate hike, cable company spending on broadband actually declined thanks to lower prices and more efficient broadband networks.

ARRIS, a major supplier of cable broadband equipment, also saw its revenue from equipment sales decline as cable operators used software virtualization to cut the price of DOCSIS channels over new, more efficient converged cable access platforms.

Cable operators are feeling heat in some markets from emerging fiber-based competitors, but the imminent arrival of DOCSIS 3.1 has made meeting those competitive challenges easy and less costly than ever before.

ARRIS closed out the year as the global revenue leader in broadband equipment, grabbing 53% of total revenue among providers of cable broadband infrastructure. ARRIS benefitted immensely from the focus of its primary North American customers, including Comcast and Time Warner Cable, on dramatically increasing throughput to stay competitive with Verizon FiOS, AT&T U-verse, and Google Fiber.

“The imminent availability of DOCSIS 3.1 linecards and full-spectrum channels won’t slow the continued purchase and deployment of current DOCSIS 3.0 channels as cable operators must continue to increase throughput to reduce the likelihood of churn among their broadband subscribers,” said Jeff Heynen, senior research analyst for SNL Kagan.

But the costs to deliver those service improvements are now so low, providers are enjoying actual declines in their annual expenses for equipment upgrades, while at the same time many are raising prices and introducing or increasing modem rental fees and usage caps.

The original DOCSIS 3.1 standard offers up to 10/1Gbps speeds. Adding “full duplex” technology could boost that upstream speed as high as 10Gbps.

The cable industry is seeking to confront one of the strongest selling points of fiber broadband – identical upload and download speeds – by enhancing the DOCSIS 3.1 standard to support “full duplex” technology.

Since inception, cable broadband has been designed to deliver asymmetrical speeds, with priority given to download speeds. To this day, cable systems typically offer customers only a fraction of those fast download speeds for uploads. Cable broadband engineers originally assumed that since the majority of customer broadband usage would be on the download side, less bandwidth was needed for upstream activity. During the late 1990s, it was not uncommon to receive 6-10Mbps of download speed, while being offered just 384kbps for uploads. Today, 1-5Mbps is more typical for entry-level broadband upload speed, but that may no longer be sufficient.

The ongoing buzz for fiber broadband has called out this speed disparity. Most fiber to the home networks offer identical upload and download speeds, which can be as fast as 1,000Mbps or in some cases even faster. That marketing advantage may be costing some cable companies broadband customers. CableLabs, the engineering association of the cable industry, has been tasked with closing that gap and this week announced symmetrical speeds using the newest DOCSIS 3.1 specification are on the fast track and a release schedule could be announced as early as mid-2016.

Dan Rice, CableLabs’s senior vice president of R&D, told Multichannel News “full duplex” will be an extension of DOCSIS 3.1, not a replacement, which guarantees a faster rollout of the enhancement.

The delivery of symmetrical Internet speeds will likely require some cable operators to make hardware changes to their infrastructure. Key to that may be ridding cable plant of multiple amplifiers and filters installed between the cable company’s nearest fiber node and the customer’s home. As cable operators push more reliable fiber further out into their networks, reducing the amount of coaxial copper cable in use, network advancements become easier and less costly.

Whether cable companies will use the enhanced upstream broadband capacity to match their download speeds or just moderately improve them isn’t known. The completion of the enhanced specification will likely give engineers and accountants at each cable company a better idea of how much upload bang for the buck makes the most sense.

Comcast customers in Atlanta, Nashville, Chicago, Detroit, and Miami will be the first to get Comcast’s new DOCSIS 3.1 modems and faster Internet plans likely to accompany the introduction of the latest cable broadband standard.

Multichannel News reports after field trials in Pennsylvania, Northern California and Atlanta, Comcast is ready to deploy the newest cable modem standard for residential and business class customers to deliver gigabit broadband services delivered over the company’s traditional hybrid fiber-coaxial cable network.

The company expects to begin distributing new modems to customers early this year, starting in Atlanta and Nashville. Comcast is still finalizing pricing on its fastest gigabit-range plans, but the cost is expected to be less than Comcast’s Gigabit Pro offering, which is delivered over fiber-to-the-home service. The cable company now charges Gigabit Pro customers $299.95 a month for the gigabit fiber service with a two-year contract. It is likely Comcast will have to price its cable gigabit offering under $100 a month to compete effectively with Google Fiber and AT&T’s U-verse with GigaPower. Google and AT&T are readying gigabit networks in both of Comcast’s first launch markets.

Comcast exempts Gigabit Pro customers from its growing field trial of data caps, but the company had nothing to say about whether its DOCSIS 3.1-powered plans will receive similar treatment. If not, customers can expect a 300GB monthly allowance.

During the second half of this year, Comcast will expand DOCSIS 3.1 to Chicago, Detroit and Miami. Beyond that, Comcast would not say when the rest of its customers across the country would be upgraded to DOCSIS 3.1 service.

Customers who own their own modems and do not plan to upgrade to a faster plan can continue to use that equipment. Customers looking to upgrade will have to lease a modem from Comcast or buy an authorized DOCSIS 3.1 capable modem, which is expected to cost 30-50% more than traditional DOCSIS 3.0 equipment.