All systems operational

Upstream Provider Issues (CUG)

Resolved
Operational
Started about 1 year ago Lasted 2 days

Affected

Backbone Network
HND
Updates
  • Resolved
    Resolved

    We see the same issue recurring before 30 mins.
    We'll report it to the Upstream Provider.

  • Monitoring
    Monitoring

    We'll continue to monitor the quality of CUG transit and migrate traffic back at the correct point in time.

    CUG Updates:
    That the packet loss is caused by short-term congestion which was due to multiple abnormal traffic in the network channel at the corresponding time.
    After analyzing that the cause of abnormal traffic was DDoS attack, engineers checked CU's automatic defense system and found frequent DDoS attacks recorded in relevant time.

  • Identified
    Identified

    We have noticed a decrease in inbound traffic from CUG following maintenance, and we are currently investigating the prefix filter issue with CUG to confirm its impact.