Help Center/ Virtual Private Network/ User Guide (Ankara Region)/ Troubleshooting/ Packet Loss Occurs
Updated on 2024-11-14 GMT+08:00
View PDF
Share

Packet Loss Occurs

Symptom

  • Packet loss occurs when a server in an on-premises data center pings an ECS in a VPC.
  • Packet loss occurs when an ECS in a VPC pings a server in an on-premises data center.

Procedure

  • Check the customer-side networking and bandwidth.
    • Check whether the customer network has multiple egresses working in load balancing mode and whether traffic destined for is distributed to a non-VPN egress. Ensure that the traffic destined for is transmitted through the same egress.
    • Ping the IP address of the VPN gateway and other public IP addresses (for example, 114.114.114.114) from the customer gateway to check the delay and packet loss rate on the public network.

      If the quality of the public network is poor, you are advised to seek help from the corresponding carrier.

    • Check whether traffic on the customer gateway device exceeds the bandwidth limit.
  • Check the networking and bandwidth.
    • Check whether traffic exceeds the bandwidth of the VPN gateway.
      1. Check the bandwidth of active and standby EIPs of the VPN gateway as follows: Choose Virtual Private Network > Enterprise – VPN Gateways, click the VPN gateway name, and check the value of Bandwidth (Mbit/s) in the EIP area.
      2. Check the actual bandwidth usage of the VPN gateway as follows: Choose Virtual Private Network > Enterprise – VPN Gateways, and click in the Public IP Address column of the VPN gateway.

      If traffic exceeds the bandwidth of the VPN gateway, increase the bandwidth.

Parent topic: Troubleshooting