Do Huawei Cloud VPNs Have the DPD Function Enabled?
Yes.
By default, the dead peer detection (DPD) function is enabled for Huawei Cloud VPNs to detect the state of the IKE process in an on-premises data center.
After three consecutive detection failures, the IKE process in the on-premises data center is considered abnormal, and the tunnel on the cloud is automatically deleted.
The DPD protocol does not require that the peer end also be configured with DPD, but it requires that the peer end be able to respond to DPD detections. To ensure consistent tunnel states at the two ends, it is recommended that you enable DPD on your on-premises gateway to detect the IKE process state of the VPN service on Huawei Cloud.
Deleting the tunnel in the case of DPD detection failures will not affect service stability.
DPD can detect exceptions in the IKE process at the peer end in time and reset the tunnel to ensure tunnel synchronization between the two ends. After a tunnel is deleted, if there is traffic transmitted over the tunnel, the tunnel can be re-established through negotiation.
Connection or Ping Failure FAQs
- Why Is a VPN Connection Always in Not Connected State After Its Configuration Is Complete?
- How Can I Prevent VPN Disconnections?
- How Do I Quickly Restore an Interrupted IPsec VPN Connection?
- What Will Happen If Traffic Exceeds the Bandwidth of a VPN Gateway?
- Is an IPsec VPN Connection Automatically Established?
- Why Cannot ECSs at the Two Ends of a Normal Cross-Region VPN Connection Ping Each Other?
- Why Cannot Subnets at the Two Ends of a Normal VPN Connection Access Each Other?
- What Do I Do If a VPN Connection Is Interrupted and a Message Indicating Data Flow Mismatch Is Displayed?
- What Do I Do If a VPN Connection Is Interrupted and a Message Indicating DPD Timeout Is Displayed?
- Why Is a VPN Connection in Not Connected State on the Management Console When It Is Already Available?
- Will I Be Notified If a VPN Connection Is Interrupted?
- What Do I Do If a VPN Connection Fails to Be Established?
- What Should I Do If I Cannot Access the ECSs on the Cloud from My On-premises Data Center or LAN After the VPN Connection Has Been Set Up?
- Why Is the State of a Successfully Created VPN Connection Displayed as Not Connected?
- Do Huawei Cloud VPNs Have the DPD Function Enabled?
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