Will an IPsec VPN Connection Be Established Automatically?
After you complete configurations at both ends of an IPsec VPN connection, the VPN connection will not be automatically established only after data flows between the two ends of the connection. If no data flows between the cloud and the on-premises data center, the VPN connection will always be in the down state. Any data generated by accessing servers or pinging between servers can trigger the establishment of a VPN connection.
The establishment of a VPN connection can be triggered in either of the following two conditions: The VPN gateway and the remote gateway automatically trigger negotiation. The cloud and on-premises servers access each other via the VPN connection to be established.
However, automatic establishment of a VPN connection cannot be triggered by a VPN gateway on Huawei Cloud. Verify that the establishment of your VPN connection can be triggered by the data flows between the two ends of the VPN connection. That is, check whether a VPN connection can be established after you ping a cloud server from an on-premises server, and whether a VPN connection can be established after you disconnect the connection and ping an on-premises server from a cloud server.
The source and destination addresses of the ping packets must be protected by the VPN.
Before a VPN connection is established, the gateway IP addresses at both ends can be pinged. However, pinging the gateway IP addresses does not trigger the establishment of the VPN connection.
Product Consultation FAQs
- What Are the Typical Scenarios of IPsec VPN?
- What Are a VPC, a VPN Gateway, and a VPN Connection?
- What Are the Relationships Between a VPC, a VPN Gateway, and a VPN Connection?
- What Is a VPN Connection? How Do I Set the Number of VPN Connections When Buying a VPN Gateway?
- What Is a Remote Gateway and Remote Subnet in a VPN Connection?
- How Do I Plan the CIDR Block of a VPC Accessed over a VPN Connection?
- Will an IPsec VPN Connection Be Established Automatically?
- What Are VPN Negotiation Parameters? What Are Their Default Values?
- What Devices Can Be Connected to Huawei Cloud Through a VPN?
- Are a Username and Password Required for Creating an IPsec VPN Connection?
- How Do I Allow Specific Servers to Access a VPC Subnet Through a Created VPN Connection?
- Which VPN Resources Can Be Monitored?
- Can an EIP Be Used as a VPN Gateway IP Address?
- Do I Need to Purchase EIPs for Servers That Communicate with Each Other Through a VPN?
- Are SSL VPNs Supported?
- How Long Does It Take for Delivered VPN Configurations to Take Effect?
- What Should I Do If I Cannot Create Connections for a VPN Gateway That Has No Bandwidth Information?
- Does Huawei Cloud VPN Support IPv6 Addresses?
- How Do I Determine My VPN Bandwidth Size?
- Does a VPN Connection Support Chinese Encryption Algorithms?
- Which IKE Version Should I Select When I Create a VPN Connection?
- What Are the Bits of the DH Groups Used by Huawei Cloud VPN?
- Can I Visit Websites Across International Borders Using a VPN?
- Can I Deploy Applications on the Cloud, Databases in an On-premises Data Center, and Then Connect Them Through a VPN?
- What Are the Differences Between the Application Scenarios and Connection Modes of IPsec and SSL VPNs?
- What Will I Be Charged for Creating a VPN? Will I Be Charged for VPN Gateway IP Addresses?
- What Is the Difference Between Billing a VPN Gateway by Bandwidth and by Traffic?
- Can a VPN Billed by Traffic Use a Shared Data Package?
- Can a VPN Gateway IP Address Be Retained After the VPN Gateway Is Deleted?
- Do I Need to Purchase EIPs for Servers That Communicate with Each Other Through a VPN?
- Where Can I Add Routes on the VPN Console to Reach the Remote Subnets?
- Will I Be Notified If a VPN Connection Is Interrupted?
- What Can I Do If VPN Connection Setup Fails?
- Which Direction of the Bandwidth Is Limited and What Is the Unit of the Bandwidth?
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