[outages] Syria off the net

[Frank Bulk]

Cloudfare believes the routes were withdrawn:

Beginning at 1026 UTC, routes were withdrawn for PCCW. The routing shifted
primarily to Turk Telekom. Routes to Telecom Italia and TATA were also
withdrawn, but has less of an impact. Then, at 1029 UTC, routes were
withdrawn for Turk Telekom. After that, Syria was effectively cut off from
the Internet. (Note that the remaining path that appears to be present in
the video is an anomaly. We have confirmed that it is not actually active.)

While we cannot know for sure, our network team estimates that Syria likely
has a small number of edge routers. All the edge routers are controlled by
Syrian Telecommunications. The systematic way in which routes were withdrawn
suggests that this was done through updates in router configurations, not
through a physical failure or cable cut.

http://blog.cloudflare.com/how-syria-turned-off-the-internet

 

BGPMon also talks about routes being withdrawn:
http://www.bgpmon.net/syria-shuts-down-the-internet/

 

I wish those who directly peer with AS29256 would/could share their router
logs.  Did they see their BGP sessions timeout or were there BGP UPDATEs?

 

Frank

 

From: outages-bounces at outages.org [mailto:outages-bounces at outages.org] On
Behalf Of Grant Ridder
Sent: Thursday, November 29, 2012 9:16 PM
To: Josh Luthman
Cc: Carl Brooks; outages at outages.org
Subject: Re: [outages] Syria off the net

 

Did they physically disconnect? or just disable eBGP?

 

-Grant

On Thu, Nov 29, 2012 at 8:38 PM, Josh Luthman <josh at imaginenetworksllc.com
<mailto:josh at imaginenetworksllc.com> > wrote:

Using ASN numbers you can see that a tiny piece is back.

 

http://www.renesys.com/blog/2012/11/syria-off-the-air.shtml


Josh Luthman
Office: 937-552-2340 <tel:937-552-2340> 
Direct: 937-552-2343 <tel:937-552-2343> 
1100 Wayne St
Suite 1337
Troy, OH 45373



On Thu, Nov 29, 2012 at 9:24 PM, Sanjeev Gupta <sanjeev at dcs1.biz
<mailto:sanjeev at dcs1.biz> > wrote:

On Fri, Nov 30, 2012 at 1:55 AM, Carl Brooks <carl.brooks at tier1research.com
<mailto:carl.brooks at tier1research.com> > wrote:

Can anyone on the list confirm/expand? Cutting off web traffic isn't
cutting off network access.


This is not blocking web, or a kind of traffic.  This is switching off power
to the routers that connect Syrian ISPs to the rest of the world.  

For all we can tell, domestic traffic may still be flowing.

A similar case last year, in Egypt, see: http://bit.ly/65w20v


-- 
Sanjeev Gupta
+65 98551208 <tel:%2B65%2098551208>    http://sg.linkedin.com/in/ghane
  

 

_______________________________________________
Outages mailing list
Outages at outages.org <mailto:Outages at outages.org> 
https://puck.nether.net/mailman/listinfo/outages

 


_______________________________________________
Outages mailing list
Outages at outages.org <mailto:Outages at outages.org> 
https://puck.nether.net/mailman/listinfo/outages

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/outages/attachments/20121129/1017c564/attachment.htm>