[Abstract] every few years, a leap second is added, to ensure that the world standard time synchronization with the sun.

science and technology on Wednesday, July 1st, the global clock increased by one second, which led to a short interruption of many networks, but most of the networks are rapidly restored service.

network performance management company Dyn Internet analysis director Ma Derui (Doug Madory) said that in the world standard time (UTC) just after midnight, there are about 2000 network suddenly short interruption. 50% of them are influenced by the network in Brazil, where the network service providers use common type of router, the router is not ready to add leap seconds.

Ma Derui said that most of the network quickly recovered, only need to restart the router can be. Distributed network database – routing (global) table 500 thousand network, so the affected network is less than 0.5%.

after midnight, the number of Internet connections to the international routing table changes to surge, reaching 800 thousand per 30 seconds. Network service providers that use the BGP protocol announce changes in network connectivity data and pass them over to other vendors. Ma Derui said, had never heard of such a number of BGP announcement, but in the leap second occurs, 2000 network disconnection, this is probably not a coincidence.

every few years, a leap second is added, to ensure that the world standard time synchronization with the sun. Due to the slow rotation of the earth, the gap between the two time increased. Since 1971, has added 26 times a second.

most networked computers use the NTP protocol to ensure the accuracy of the time. The last time a leap second is added in 2012, has led to problems of Linux system, such as slow or CPU death. But this time, many companies seem to avoid a lot of problems because of a better response. (SAIL)