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 […]
Another World Cup is in the books, and it’s fair to say that most people will remember 2014 for the inglorious and improbable performance of the host nation, losing 7-1 and 3-0 in its semifinal and consolation matches. Brazil’s sad exit capped off a year of soul-searching about the nation’s massive investment in hosting the […]
Today, we’re announcing the acquisition of Renesys by Dyn, the leading provider of Internet Performance solutions. Dyn and Renesys represent the perfect combination of Internet Intelligence assets from Renesys and Traffic Management and Message Management solutions from Dyn. We’re excited to become part of the Dyn team! Those who know both companies may ask, “What […]
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? […]
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 […]
Traffic interception has certainly been a hot topic in 2013. The world has been focused on interception carried out the old fashioned way, by getting into the right buildings and listening to the right cables. But there’s actually been a significant uptick this year in a completely different kind of attack, one that can be […]
In an attempt to impose sanctions on its own ISPs over their failure to follow its pricing guidelines, the Iraqi Ministry of Communications last week resorted to an unorthodox regulatory tactic: shutting down the Internet at the GBI cable landing in Al Faw (Basra), and across the border with Jordan. Media reports suggest that the […]
As Iranian President Hasan Rouhani addressed the United Nations for the first time this week, people all over the world took to the Internet to hear and discuss his message, many for the first time. They saw a statesman exercising what Ayatollah Khamenei has called “heroic flexibility” — the will to consider all possibilities for […]
We’ve been asked all day to comment on the potential for Internet shutdowns in Turkey. At this point, Renesys observes no significant changes in Turkey’s Internet routing, no significant outages affecting the routing of Turkey’s networks, no reduction in the number of inbound active measurements to Turkish hosts within the country from our infrastructure […]
Update (15:26 UTC, 15 May): Routes to Syrian networks have been restored, at 18:26 Damascus time. Outage duration: 8h25m
Update (14:20 UTC, 15 May): Plot of latency measurements to Syrian hosts from various locations, indicating that replies stopped returning shortly after 7am UTC, aligned with the withdrawal of routes to Syrian networks. (Click image for details)
Update (07:30 UTC, 15 May): Syrian Internet down again since 07:01 UTC (10:00 Damascus time), Wednesday, 15 May 2013. Syrian news agency reports that they’re working to fix. Potentially related to forthcoming UN decision today?
Update: Syrian Internet has returned. Outage lasted 19.5 hours, from 18:45 UTC May 7th to 14:13 UTC May 8th.
As we write, the Syrian people are still disconnected from the global Internet at the most fundamental level, nearly all of their paths withdrawn from the global routing table. Since 18:45 UTC on May 7th, Renesys hasn’t seen a flicker of activity. We haven’t been able to successfully send a ping or a traceroute to any host inside Syria. Government websites, universities, domain name servers, core infrastructure routers, banks, businesses, DSL customers, smartphones: all silent.
As I look back at what we’ve written about Internet outage over the years, I see a sort of evolution in our perspective. We’ve covered Internet failures due to war, politics, censorship, central planning, earthquakes, hurricanes, cable cuts, business disputes, terrorism, undersea mud volcanoes, and (perhaps) cyberwarfare.
In the early days, we reported each outage breathlessly, shocked that the Internet could fail in such spectacular ways. If you look around the web this morning, you’ll see a lot of that same shock-and-awe reporting from companies who are just discovering the fragilities visible in Internet data.