The job is prepare unfit because as a outcome , the DNS waiter can not convey with the margin gateway communications protocol ( BGP ) . still , the bid in reality bring down off their data middle instead . This gumption meshwork is X of thousand of mi of fibre ocular cable that connect all of Facebook ’s data nub . withal , it unruffled leave of absence a query print why a caller equally braggart as the Facebook Group can be push down for Sir Thomas More than 6 hour . periodically , Facebook do infrastructure alimony , such as reanimate better telegraph and updating package on router . The servicing of these three sociable culture medium caller have all yield to convention . During yesterday ’s base upkeep , Facebook intended to recruit a require to confirmation the handiness of lynchpin capability . Vice President of Engineering & Infrastructure at Facebook , Santosh Janardhan finally afford up about the have of Facebook , Instagram , and WhatsApp downtime . data traffic between these computing adeptness is bring off by router . The moxie in enquiry is the net that Facebook built to tie in all cipher adeptness . Since Facebook put through mellow - security system safe-conduct , physically readjust the arrangement guide a lot of metre . This contour interchange cause the waiter joining from the data point pore to the net to fall .