The classic network is an earlier cloud network provided by Tencent Cloud. As the user scale and services expand, Virtual Private Cloud (VPC) evolves from the classic network to provide independent, controllable, and more secure networks. As a mainstream cloud network, VPC provides better user experience. This document provides answers to questions that you may have when you migrate resources from the classic network to VPC.
Why do I need to migrate to VPC?
A VPC is a logically isolated network space in Tencent Cloud and has the following advantages:
It allows you to customize IP ranges, IP addresses, and routing policies.
It supports more complex scenarios such as ENI, network ACL, and cross-region communication.
It improves the disaster recovery capability and availability greatly.
It supports multiple CVM models.
VPC is more suitable for use cases that require custom configurations compared with the classic network. To provide you with better services, Tencent Cloud will fully upgrade the classic network. From March 31, 2022, resources cannot be created on the classic network. Services on the classic network are officially discontinued on December 31, 2022. These services are replaced with the corresponding VPC services.
Is My Business Running on the Classic Network Affected After March 31, 2022?
Your existing resources running on the classic network are still available until December 31, 2022. We recommend you migrate your resources to VPC as soon as possible.
What Is the Impact If I Do Not Migrate Resources to VPC?
Before the classic network is discontinued, your existing services will not be affected if you do not migrate. However, after the classic network is discontinued, related services will become unavailable. Please ensure that you complete the migration from the classic network before December 31, 2022.
How Do I Determine Whether I Need to Migrate Resources to VPC?
1. Check whether your account is created before 00:00 June 13, 2017. If your account is created after 00:00 June 13, 2017, the classic network is not supported for your account and the cloud resources that you purchase are already in VPC. In this case, you do not need to migrate resources to VPC. If your account is created before 00:00 June 13, 2017, go to Step 2.
2. Go to the Tencent Cloud Console, select Billing > My Orders, and check if you have purchased the following resources:
Classic network resources include:
Classic network servers: CVM, GPU Cloud Computing, and FPGA Cloud Computing.
Classic network database: TencentDB for MySQL, Redis, SQL Server, PostgreSQL, and MongoDB, as well as TDSQL for MySQL.
Classic network CLB: classic CLB and application CLB
Others: Classic Network Cloud File Storage (CFS) and Classic Network Cloud Kafka (CKafka).
Reminder
Lighthouse instances are not part of the classic network resources; they inherently belong to the Virtual Private Cloud (VPC) and do not require migration.
3. If you have purchased resources, please log in to the corresponding resource console to check if the resource is on the classic network. If you haven't purchased any resources, you can ignore the network migration notifications.
For example, in the Cloud Virtual Machine Console, if the network attribute of the cloud resource is Classic Network, you need to perform network migration. If it is Virtual Private Cloud, you can ignore the network migration notifications.
Reminder
If you have numerous resources and it's inconvenient to assess them individually, please submit a ticket for further assistance.
Will the Billing Mode of an Instance Change After the Migration from the Classic Network to VPC?
The billing mode is not changed.
Will the Configuration of an Instance Change After the Migration from the Classic Network to VPC?
The public IP remains unchanged, and the instance can still be accessed by using the original domain name.
The Media Access Control (MAC) address remains unchanged, but the private IP will be changed.
Reminder
If the IP of the instance is within the target VPC IP range, you can keep the private IP unchanged by specifying it as the new IP. Otherwise, the private IP will change.
Will the Services Be Interrupted During the Migration from the Classic Network to VPC?
This depends on the specific Tencent Cloud service that you use:
During the migration of a CVM instance, the instance must be restarted, which will interrupt your service for a short while. We recommend you migrate the instance during off-peak hours.
For TencentDB services, your services are not affected as dual-IP accessing is supported during migration.
CLB doesn't support direct migration. You can rebuild instances with the same configuration and gradually migrate the business traffic.
Can I Migrate an Instance Back to the Classic Network?
No, you cannot migrate an instance back to the classic network after it is migrated to VPC.
Can I Migrate a Classic Network Instance in a Region to a VPC Instance in Another Region?
No, instances can be migrated only to the same region and availability zone.
Is Network Migration Implemented by Tencent Cloud?
No, you need to manually perform the migration. If you have any questions, you can submit a ticket for further assistance.