Research and writing @thousandeyes. Co-host of #TheInternetReport. I write about Internet performance, DNS, BGP, and other topics. TCK. Tweets are my own.

San Francisco, CA
Joined May 2011
FB's statement on the outage perfectly aligns with what we reported on our blog (and that no one else has highlighted) - their backbone network went down first. That’s why we saw receive errors BEFORE DNS went down and even after DNS came back up. thousandeyes.com/blog/facebo…
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What a week for @thousandeyes ! But we've saved the best for last. By combining observability with the most technologically advanced absurdability, we've delivered the industry's only full-stack, full-sense, and full-of-it observability solution. thousandeyes.com/hearability
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A Vision of Where Networking is Headed with @Cisco and ThousandEyes >> tune in to @bitprints and @NetworkingNerd at @GestaltIT for a conversation on network visibility and how you ensure remote employees can reliably connect to the services they need: buff.ly/3lo6KXG
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Last week Telstra had a #BGP mishap that impacted @ProtonMail @Quad9DNS and others. Here's an interactive link showing how the incident impacted Quad9 when Telstra started announcing routes to their service. zyrirevtf.share.thousandeyes…
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Telstra's peer Verizon was one of the service providers that began preferring Telstra's announced route.
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During the incident, both Telstra and Quad9 were advertising a /24 prefix.
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Deep dive on the Centurylink/Level 3 outage. Lots of lessons to take away on the complexities of Internet routing and specific actions their customers could have taken to reduce outage impact. blog.thousandeyes.com/centur…
Will be a good one! Maybe we should livestream it @archana_k7? 🤔 #CenturyLinkdown #TheInternetReport
Sunday Funday? Looking forward to dissecting @CenturyLink’s outage with @bitprints on the #TheInternetReport tomorrow.
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Big outages last week. @archana_k7 and I go deep on the IXP outage, plus our guest expert discusses TLS certs, the role of browser providers, and why we're seeing more outages related to expired certs. youtu.be/pWfq21r4mEo
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The proliferation of underlay options from players like @Cloudflare and public cloud providers is going to be interesting to watch play out. Will enterprises find the Internet is good enough? Only way to know is to measure your options. blog.cloudflare.com/cloudfla…
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Angelique Medina retweeted
*rips mask off DNS* "It was you all along, BGP!" "And I would have got away with it if it weren't for you meddling kids" @Cloudflare says one of its global backbone routers "announced bad routes," causing today's outage. theregister.com/2020/07/17/c…
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Cloudflare DNS going down is a big deal. They are critical dependency for many businesses to run their #DNS, and they are a commonly used public resolver. Plus they support two of the DNS roots! Check out this interactive look at 1.1.1.1 down: bkgtycvd.share.thousandeyes.… #Cloudflare
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Plus they are one of the trusted DoH resolvers for Mozilla Firefox.
Content and content delivery providers have played a big role in keeping the #internet healthy in recent months. Hear about the role they are playing in submarine cable rollouts on this week's #TheInternetReport with @TeleGeography. youtu.be/3234Nk6U_Bg
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ThousandEyes tests confirm that users around the globe experienced issues accessing Slack for just under an hour starting at ~4:45 PDT. During the service outage, network paths connecting to Slack’s edge servers did not show any disruption.
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Great chat with @packetpushers and @archana_k7 on @DayTwoCloudShow. Packet Pushers has been a longstanding resource for networking practitioners. Nice to see them tackle public cloud deployment and operations.
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