Help Center/ Virtual Private Network/ FAQs/ Connection or Ping Failure/ What Do I Do If a VPN Connection Is Interrupted and a Message Indicating Data Flow Mismatch Is Displayed?

Updated on 2023-10-20 GMT+08:00

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What Do I Do If a VPN Connection Is Interrupted and a Message Indicating Data Flow Mismatch Is Displayed?

This is usually caused by an ACL mismatch between the VPN gateway on the cloud and the customer gateway in your on-premises data center.

Verify that at the two ends of the VPN connection, the local and remote subnets are reversed and the ACL configurations are also reversed.
Use the subnet/mask format when you configure interesting traffic in your on-premises data center. Do not use the address object mode since it may cause incompatibility issues.

Parent topic: Connection or Ping Failure

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