Category: BGP instability

Country wide outage in Azerbaijan

Posted by Andree Toonk - November 16, 2015 - BGP instability
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It doesn’t happen often that a country with hundreds of prefixes is affected by a massive outage, however earlier today this unfortunately happened to Azerbaijan. Starting at 12:04 UTC approximately 94% of the prefixes out of Azerbaijan became unreachable.   The event was reported on @bgpstream and details plus a replay can be found here: […]

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Massive route leak causes Internet slowdown

Posted by Andree Toonk - June 12, 2015 - BGP instability
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Earlier today a massive route leak initiated by Telekom Malaysia (AS4788) caused significant network problems for the global routing system. Primarily affected was Level3 (AS3549 – formerly known as Global Crossing) and their customers. Below are some of the details as we know them now. Starting at 08:43 UTC today June 12th,  AS4788 Telekom Malaysia started […]

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What caused the Google service interruption?

Posted by Andree Toonk - March 12, 2015 - BGP instability
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This morning people on twitter reported that they were unable to reach Google services. Businessinsider followed up with a story in which they mentioned that the Google service interruption primarily involved European and Indian users. In this blog we’ll take a quick look at what exactly happened by looking at our BGP data. The first […]

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What caused today’s Internet hiccup

Posted by Andree Toonk - August 13, 2014 - BGP instability
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Like others, you may have noticed some instability and general sluggishness on the Internet today.  In this post we’ll take a closer look at what happened, including some of the BGP details! At around 8am UTC Internet users on different mailing lists, forums and twitter, reported slow connectivity and intermediate outages.  Examples can be found […]

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Looking at the spamhaus DDOS from a BGP perspective

Posted by Andree Toonk - March 30, 2013 - BGP instability, Hijack
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It’s been a busy week for network engineers world wide, rerouting around broken optical links and of course the 300Gb/s DDOS attack towards Spamhaus and Cloudflare. This DDOS has been classified as the largest DDOS attack ever recorded and has been written about quite a bit in mainstream media. There’s been a bit of discussion […]

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Syria shuts down the Internet

Posted by Andree Toonk - November 29, 2012 - BGP instability
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As of 10:27 UTC this morning the majority of the Internet in Syria is no longer connected to the rest of the world and can be considered as offline. Syria has only one major provider, AS29256 The Syrian Telecommunications Establishment. This provider is government owned and originates 56 out of 62 Syrian prefixes. This morning between […]

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Internet outage in Lebanon continues into second day

Posted by Andree Toonk - July 6, 2012 - BGP instability
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It’s not often we see large-scale outages such as the one that currently affect Internet users in Lebanon where Internet access has been severely damaged for over 36 hours now. The problems started on July 4th, 16:16 (UTC), which is 19:16 Lebanese time. The cause of the outage according to the Telecoms Ministry in Lebanon […]

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How the Internet in Australia went down under

Posted by Andree Toonk - February 27, 2012 - BGP instability
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This Wednesday for about 30 minutes  many Australians found themselves without Internet access. All these users were relying either directly of indirectly on the Telstra network, which at that point was isolated from the Internet. This story quickly hit the local headlines, in this blog we’ll look at the technical details of this event and […]

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Internet Syria offline

Posted by Andree Toonk - June 3, 2011 - BGP instability, BGPmon.net
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The unrest in Syria continues and as of this morning it seems that the Syrian government has shutdown about of all Syrian networks. The Internet in Syria is dominated by “The Syrian Telecommunications Establishment”, which routes its networks from AS29256 and AS29386. Besides these providers there are AS6453 – Tata communications which routes 6 Syrian […]

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Internet in Egypt offline

Posted by Andree Toonk - January 28, 2011 - BGP instability, BGPmon.net
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Click for latest updates:  Last updated at January 31, 21:00 UTC Different media are reporting that Internet and other forms of electronic communications are being disrupted in Egypt.  Presumably after a government order in response to the protests. Looking at BGP data we can confirm that according to our analysis 88% of the ‘Egyptian Internet’ […]

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Long AS paths causing commotion

Posted by Andree Toonk - February 19, 2009 - BGP instability, BGPmon.net
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Last Monday long AS paths caused quite some commotion. A good technical explanation can be found at the Renesys and arbornetworks blog

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