Menu
Leap second causes Internet hiccup, particularly in Brazil

Leap second causes Internet hiccup, particularly in Brazil

More than 2,000 networks crashed, but most recovered quickly, according to Dyn

The leap second added to clocks at midnight Wednesday caused more than 2,000 networks to briefly crash.

The leap second added to clocks at midnight Wednesday caused more than 2,000 networks to briefly crash.

The addition of a leap second to world clocks on Wednesday caused some networks to crash although most quickly recovered.

Some 2,000 networks stopped working just after midnight Coordinated Universal Time (UTC), said Doug Madory, director of Internet analysis with Dyn, a company studies global Internet traffic flows.

Nearly 50 percent of those networks were in Brazil, which may indicate that ISPs use a common type of router that may not have been prepared for the leap second, he said.

Most of the networks quickly recovered, which may have required just a reboot of a router, Madory said.

The Internet's global routing table, a distributed database of networks and how they connect, contains more than 500,000 networks, so the problems affected less than a half a percent, Madory said.

Just after midnight, the number of changes to the global routing table spiked to as much as 800,000 per 30 seconds, according to Dyn. Changes to connections between networks are announced by providers using BGP (Border Gateway Protocol) and propagate across the Internet to other providers.

Madory said it's not unheard of to see a flurry of new BGP announcements around those levels, but the timing around the leap second and 2,000 networks going offline "can't be a coincidence."

A leap second is added every few years to keep UTC synched with solar time. The difference between the two widens due to the slowing of the earth's rotation. Since 1971, 26 leap seconds have been added to clocks.

Most Internet-connected computers use the Network Time Protocol (NTP) to keep track of time, which is linked to UTC.

The last leap second, added in 2012, caused problems for Linux systems such as slowdowns or CPU freezes. This time around, however, many companies looked to avoid issues with better preparation.

Send news tips and comments to jeremy_kirk@idg.com. Follow me on Twitter: @jeremy_kirk


Follow Us

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Tags internetDyn

Events

Why experience is the new battleground for partners

Join us for an exclusive webinar, in association with Hewlett Packard Enterprise and Technology Services Industry Association (TSIA) and learn about the latest industry insights and how technology services continue to evolve to deliver differentiated value, and how partners can be successful in 2021 and beyond.

Featured

Slideshows

The Kiwi channel gathers for the 2020 Reseller News Women in ICT Awards

The Kiwi channel gathers for the 2020 Reseller News Women in ICT Awards

Hundreds of leaders from the New Zealand IT industry gathered at the Hilton in Auckland on 17 November to celebrate the finest female talent in the Kiwi channel and recognise the winners of the Reseller News Women in ICT Awards (WIICTA) 2020.

The Kiwi channel gathers for the 2020 Reseller News Women in ICT Awards
Leading female front runners honoured at the 2020 Reseller News Women in ICT Awards

Leading female front runners honoured at the 2020 Reseller News Women in ICT Awards

The leading female front runners of the New Zealand ICT industry joined together for the annual Reseller News Women in ICT Awards event at the Hilton in Auckland, during which hundreds of guests celebrated 13 outstanding individuals who won awards, chosen from more than 50 finalists representing over 30 organisations.

Leading female front runners honoured at the 2020 Reseller News Women in ICT Awards
Channel gathers to celebrate the Reseller News Innovation Awards 2020 winners

Channel gathers to celebrate the Reseller News Innovation Awards 2020 winners

More than 500 channel leaders gathered in Auckland on 21 October at the ​Reseller News Innovation Awards ​2020 to celebrate the achievements of the New Zealand technology industry's top partners, start-ups, vendors, distributors and individuals.

Channel gathers to celebrate the Reseller News Innovation Awards 2020 winners
Show Comments