All posts tagged with: "Route Leak"

Best Practices to Combat Route Leaks and Hijacks

Posted by on January 26, 2017

In past blogs, we’ve explored how you can alert for and diagnose BGP route leaks and hijacks. Route leaks and hijacks—routing events where illegitimate prefixes are wrongly propagated through the Internet—are notoriously difficult to troubleshoot and have the potential to bring down entire swaths of the Internet.… Read More »

Top Internet Outages of 2016

Posted by on December 20, 2016

As we sip on warm holiday beverages and gradually wind down the year, it’s rather customary to reflect on the past and contemplate the future. Following traditions, we took a stroll down memory lane analyzing the state of the Internet and the “cloud”. In today’s blog post we discuss some of the most impactful outages of 2016, understand common trends and evaluate some of the key learnings.… Read More »

NANOG 68: Decoding Performance Data from Large-Scale Internet Outages

Posted by on November 7, 2016

At NANOG 68 in Dallas, TX on October 18, 2016, ThousandEyes CEO Mohit Lad presented on recent outages that had large-scale effects on Internet infrastructure and availability. During his talk, Mohit discussed three recent, impactful events: the June 2016 DNS root server DDoS, the May 2016 Sea-Me-We-4 cable cut and the April 2016 AWS route leak. … Read More »

Internet Censorship Around the World

Posted by on February 2, 2016

As the Internet has evolved, so too has its censorship. In the beginning, many believed that censoring the Internet was impossible, since networks were to designed to adapt to major disruptions and simply route around any barriers—including intentional ones. However, countries like Singapore, China, Saudi Arabia and Iran found ways to leverage the design of their network infrastructure to make… Read More »

Top Internet Outages of 2015

Posted by on January 4, 2016

Now that we’ve rung in the new year, let’s look back at the state of Internet performance in 2015. We went through our archives to find the most impactful application and network outages and selected eight whose effects reverberated through many services, users and geographies.… Read More »

Route Leak Causes Amazon and AWS Outage

Posted by on June 30, 2015

There was quite a bit of chaos on the Internet today, including major fiber cuts in California. To add to this confusion, between 5:24pm and around 6:10pm Pacific on June 30th, social media and outage reports indicated some issues with Amazon, AWS and a variety of services that run on AWS. In our office, we realized HipChat (our internal messaging system) and Okta (our SSO provider) were not working. And neither was our corporate website, which is hosted on AWS EC2 and fronted by AWS CloudFront.… Read More »

Route Leak Causes Global Outage in Level 3 Network

Posted by on June 15, 2015

On June 12th, a major BGP route leak occurred with wide geographic impacts across dozens of important internet services. Because Internet routing is determined in a distributed fashion (unlike DNS), the Border Gateway Protocol (BGP) exists to communicate routing information between the networks of the Internet. Networks, called Autonomous Systems (AS), advertise routes among one another, in the process learning the route that traverses the fewest networks (the AS Path).… Read More »

Finding and Diagnosing BGP Route Leaks

Posted by on April 1, 2015

There have been a number of high profile routing leaks in the past few weeks. So today we’re going to review several of these leaks in detail to understand how the work, how you can detect them and how you can determine their severity. Our examples cover the Google / Hathway route leak and the Enzu route leak, both in March 2015.… Read More »

4 Real BGP Troubleshooting Scenarios

BGP Troubleshooting Scenarios
Posted by on April 30, 2014

Border Gateway Protocol (BGP) is a key component of Internet routing and is responsible for exchanging information on how Autonomous Systems (ASes) can reach one another. When BGP issues occur, inter-network traffic can be affected, from packet loss and latency to complete loss of connectivity. This makes BGP an important protocol for network operators to be able to troubleshoot. … Read More »