Explain what caused the global outage of Facebook, WhatsApp – Technology News, Firstpost
Rounak Kumar Gunjan05, 2021 12:02:08 IST
Facebook faced what is said to be one of the biggest blackouts on record last night, with users unable to use the service for hours. The crippling outage of Facebook, WhatsApp, Instagram, Facebook Messenger, and other Facebook services occurred due to a glitch in the company’s domain name system, a relatively unknown but crucial component of the internet.
Facebook said the outage was due to a configuration change in its routers and users had nothing to worry about. “The underlying cause of this outage has also impacted many internal tools and systems that we use in our day-to-day operations, complicating our attempts to diagnose and resolve the problem quickly,” the company said in an article. blog. Facebook said configuration changes on the routers that coordinate network traffic between its data centers caused issues that interrupted that communication. Basically, Facebook’s machines couldn’t talk to each other.
Ahead of Facebook’s official statement, web infrastructure and website security company Cloudfare also detailed the cause of the problem. In a blog post, Cloudfare said that “Facebook and related properties have disappeared from the Internet in a flurry of Border Gateway Protocol (BGP) updates.” must allow other networks to find its sites.
Before understanding what and what these technical terms like DNS or BGP mean, we tried to break the problem down into simpler terms. Let’s start with the basics:
What is DNS and what is wrong?
According to a Bloomberg report, DNS is like a phone book for the Internet. It is the tool that converts a web domain, like Facebook.com, to the actual IP address where the site resides. Think of Facebook.com as the person they might look for in the White Pages and the IP address as the physical address they find.
On Monday, a technical issue with Facebook’s DNS records caused outages. When a DNS error occurs, it is not possible to turn Facebook.com into a user profile page. This is apparently what happened inside Facebook, but on a scale that has temporarily crippled the entire Facebook ecosystem.
Not only were Facebook’s main platforms down, but also their internal applications, including the company’s own messaging system. Twitter and Reddit users also reported that employees at the Menlo Park, Calif., Campus were unable to access offices and conference rooms requiring security badges. This could happen if the system granting access is also connected to the same domain, Facebook.com.
Now what is BGP?
The same Bloomberg report also states that the problem at Facebook Inc. appears to have originated in the Border Gateway Protocol or BGP. If DNS is the Internet’s telephone directory, BGP is its postal service. When a user enters data on the Internet, BGP determines the best available paths that the data could take.
Minutes before Facebook’s platforms stopped loading, public records show that a large number of changes have been made to Facebook’s BGP routes, according to Cloudflare Inc.’s CTO John Graham-Cumming , in a Tweet.
While the BGP snafu may explain why Facebook’s DNS failed, the company has yet to explain why BGP routes were removed early on October 4.
Are Facebook services backed up?
Yes. Most of Facebook’s services, including WhatsApp, Instagram and Facebook, are back up and running. So that we are able to use all three services perfectly at the time of writing this article. Facebook also says its systems are all back up and running. Even the company’s WhatsApp Twitter account said the instant messaging platform is back and is working 100%.