Help Center/ Virtual Private Network/ FAQs/ FAQs - S2C Enterprise Edition VPN/ Bandwidth and Network Speed/ What Will Happen If Traffic Exceeds the Bandwidth of a VPN Gateway?
Updated on 2025-11-18 GMT+08:00
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What Will Happen If Traffic Exceeds the Bandwidth of a VPN Gateway?

The VPN gateway bandwidth applies to traffic in the outbound direction of a VPC. If outbound traffic in the VPC exceeds the bandwidth, network congestion will occur, some subnets cannot be accessed, or even the VPN connection will be interrupted due to VPN detection timeout.

In this case, you are advised to increase the VPN gateway bandwidth.

  • The maximum bandwidth supported by a VPN gateway of the Basic specification is 100 Mbit/s.
  • The maximum bandwidth supported by a VPN gateway of the Profession 1 specification is 300 Mbit/s.
  • The maximum bandwidth supported by a VPN gateway of the Profession 2 specification is 1 Gbit/s.
  • The maximum bandwidth supported by a VPN gateway of the Profession 3 specification is 5 Gbit/s.
  • The maximum bandwidth supported by a VPN gateway of the GM specification is 500 Mbit/s.