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(Resolved) 2019-10-13 20:55 UTC: Service degradation affecting multiple Cloud Agents in China

Last updated: Sun Oct 13 23:48:13 GMT 2019

Network conditions between China Unicom and CenturyLink prevented some Cloud Agents in China from communicating with the ThousandEyes platform between 20:55 and 23:15 UTC on 2019-10-13. 

Affected scope

The following Cloud Agents in China experienced  problems communicating with the ThousandEyes platform due to a network conditions between China Unicom and CenturyLink. 
  • Shanghai, China (China Telecom)
  • Beijing, China (China Unicom)
  • Guangzhou, China
  • Jinan, China (China Unicom)
  • Shijiazhuang, China (China Unicom)
  • Dongguan, China
  • Shenyang, China (China Unicom)
  • Qingdao, China (Alibaba cn qingdao)
  • Shenzhen, China (China Unicom)
  • Dalian, China (China Unicom)
  • Guangzhou, China (China Unicom)


The issue has been resolved. Some test rounds were not performed during this outage. 

Event timeline

2019-10-13 23:20 UTC Affected Cloud Agents were confirmed as reliably communicating with the ThousandEyes platform. 
2019-10-13 23:10 UTC ThousandEyes adjusted BGP route advertisements
2019-10-13 20:55 UTC Start of service degradation