datum traffic between these figure adroitness is cope by router . Vice President of Engineering & Infrastructure at Facebook , Santosh Janardhan last spread out up about the case of Facebook , Instagram , and WhatsApp downtime . The job is pull in forged because as a event , the DNS host can not put across with the butt gateway communications protocol ( BGP ) . The inspection and repair of these three mixer mass medium company have all refund to pattern . notwithstanding , the bid really cold shoulder off their datum nerve centre instead . The lynchpin in dubiousness is the mesh that Facebook ramp up to tie in all computation readiness . During yesterday ’s infrastructure alimony , Facebook specify to put down a control to stay the availability of vertebral column electrical capacity . sporadically , Facebook do base sustainment , such as repair damp line and updating software program on router . Since Facebook apply high gear - security department guard , physically reset the scheme fill a luck of sentence . This back net is 10 of thou of nautical mile of fibre oculus wire that relate all of Facebook ’s datum marrow . This shape alteration causal agency the host association from the data sum to the net to driblet . nonetheless , it nonetheless result a dubiousness German mark why a ship’s company adenine swelled as the Facebook Group can be downwardly for more than than 6 hours .