Why Far-Flung Parts of the Internet Broke Today

VolumeDrive is a Pennsylvania-based hosting company that uses Cogent and (since late May of this year) Atrato for Internet transit. A routing leak this morning by VolumeDrive was passed on to the global Internet by Atrato causing disruptions to traffic in places as far-flung from the USA as Pakistan and Bulgaria. Background The way Internet […]

Internet Touches Half Million Routes: Outages Possible Next Week

There was minor consternation in Internet engineering circles today, as the number of IPv4 networks worldwide briefly touched another magic “power of 2″ size limit. As it turns out, 512K (524,288 to be exact, or 2-to-the-19th power) is the maximum number of routes supported by the default TCAM configuration on certain aging hardware platforms. The […]

No turning back: Russia activates Crimean cable

The Crimean peninsula depends critically on the Ukrainian mainland for infrastructure services: power, water, and Internet. That has begun to change in the last few days, as Crimean ISPs began receiving their first Internet services over the newly constructed Kerch Strait Cable, linking Crimea with the Russian mainland. The message: there is no turning back […]

Serving the Global Consumer: Learning from WhatsApp

The $19B WhatsApp acquisition brings Facebook what they desperately need: 250M daily users in high-growth international mobile markets, many of them in the key under-20 demographic. But how do you design a service delivery infrastructure that can reliably reach the far corners of the earth to keep all these mobile eyeballs connected to each other? […]

Syria, Venezuela, Ukraine: Internet Under Fire

Renesys is headed to RightsCon next week, to bring some data to the discussions around evolving Internet localization, the economics of infrastructure diversification, and the role of the private sector in strengthening and stabilizing Internet service delivery worldwide. When we talk to our customers about Internet instability (international service providers, multinational enterprises, cloud and content […]

Why Internet Paths Matter: Performance

Remember the Information Superhighway? It’s what some folks used to call the Internet back in the 1990s. Those of us lucky enough to have access from home were using dial-up modems that were over 1,000 times slower than the cable modem I’m using right now. Nothing very Super about that and the Internet has never […]

Could It Happen In Your Country?

{Updated; see below for lists of countries for easier reference, and a special offer for WCIT attendees. —jim}

How hard is it to disconnect a country from the Internet, really?

That’s the number one question we’ve received about our analysis of the Egyptian and Syrian Internet blackouts, and it’s a reasonable question. If the Internet is so famously resilient, designed to survive wars and calamities, how can it fail so abruptly and completely at the national level?

The key to the Internet’s survival is the Internet’s decentralization — and it’s not uniform across the world. In some countries, international access to data and telecommunications services is heavily regulated. There may be only one or two companies who hold official licenses to carry voice and Internet traffic to and from the outside world, and they are required by law to mediate access for everyone else.

Under those circumstances, it’s almost trivial for a government to issue an order that would take down the Internet. Make a few phone calls, or turn off power in a couple of central facilities, and you’ve (legally) disconnected the domestic Internet from the global Internet. Of course, this level of centralization also makes it much harder for the government to defend the nation’s Internet infrastructure against a determined opponent, who knows they can do a lot of damage by hitting just a few targets.

Continue Reading

The Pirate Bay Still Afloat

The_Pirate_Bay_logo.png The popular torrent site The Pirate Bay (TPB) suffered a widespread outage today as reported by several media outlets: BBC, TorrentFreak, PC Magazine, ZDNet, The Huffington Post and many others.

To understand why The Pirate Bay disappeared, we’ll look at them from a routing perspective, noting that without widely accepted routes to their IP space, they will lack global connectivity. TPB operates an autonomous system, AS 51040, which has two Internet service providers, namely, ROBTEX (AS 48285) and Serious Tubes Networks (AS 50066). TPB also has several peers, the most prominent of which is Hurricane Electric (AS 6939). To provide their services, The Pirate Bay originates two IP networks or prefixes: (Pirate Networks) and (The Pirate Bay). The prefix appears to be TPB’s core network, while appears to host TPB’s main domains, such as piratebay.net, piratebay.org, thepiratebay.com etc.

Continue Reading

Return of SMW3

The new EPEG terrestrial cable through Russia and Iran cannot come fast enough for Oman. Last month, three major submarine cables were severed by a ship’s anchor in the shallow waters of the Red Sea, including SEA-ME-WE 3 (SMW3). epeg.jpg

Continue Reading

East African Internet Resilience

It is a fact of life of global Internet infrastructure that wherever shipping routes and cable routes overlap, submarine cable breaks are going to happen. In just the past two weeks, we’ve seen four major cable breaks: three at the same time in the Red Sea on Feb 17th, and a fourth right offshore near Mombasa, Kenya on Feb 25th.

East Africa has been hit hard by these breaks, but in fact, it’s easy to lose sight of how far Internet connectivity in this region has come in a few short years. It’s stunning to see how much of the Internet infrastructure in Kenya and Uganda is actually still up and running, although congested. East African ISPs have learned a tremendous amount in a short time about designing their networks for resilience and diversity, and that’s evident in the data pertaining to these cable breaks.

The graphic on the right illustrates the impact of the most recent TEAMS cable cut. Our data peg the time of the cut at 09:13 UTC on February 25, 2012, as providers throughout the region see sudden, massive shifts in their international Internet connectivity. Kenya normally has about 550 routed networks, and by this measure, over 60% of the country’s Internet became unreachable at this point. Uganda normally has about 180 routed networks, and experienced a similar degree of impairment. Rwanda and Tanzania do not appear to have been affected by this cable cut, which is not surprising, since TEAMS is a point-to-point cable connecting Kenya to the United Arab Emirates (see Telegeography’s online Submarine Cable Map).


Continue Reading

Page 1 of 812345...Last »