Known Juniper security issue . We found it during testing and discovered it is fixed in later code. I don't have the specifics in front of me right now or I'd share. This Email was sent from Steve's iPad Message: 5 Date: Sun, 3 Mar 2013 20:31:35 +0000 From: Vinod K <vinod408@hotmail.com> To: <nanog@nanog.org> Subject: RE: Cloudflare is down Message-ID: <BLU166-W19D22E1F37FCEAAC077DBB89F90@phx.gbl> Content-Type: text/plain; charset="iso-8859-1" I am not sure of bug... could be normal behavior for how JunOS CLI handle "extended" packet size. Will wait for Juniper comment on incident. Vinod

Date: Sun, 3 Mar 2013 20:02:05 +0000 From: nick@foobar.org To: arthur.wist@gmail.com Subject: Re: Cloudflare is down CC: nanog@nanog.org

On 03/03/2013 10:46, Arthur Wist wrote:

...

Apparently due to a routing issue...

back up again: http://blog.cloudflare.com/todays-outage-post-mortem-82515

tl;dr: outage caused by flowspec filter tickling vendor bug.

Nick