Virtual Private Cloud
- Release Notes and Announcements
- Product Introduction
- Purchase Guide
- Quick Start
- VPC Connections
- Operation Guide
- Virtual Private Cloud (VPC)
- Classiclink
- Subnets
- Route Tables
- IPs and ENIs
- Network Connection
- Security Management
- Security Groups
- Managing Security Groups
- Managing Security Group Rules
- Network ACL
- Parameter Template
- Diagnostic Tools
- Traffic Mirroring
- Practical Tutorial
- Migrating from the Classic Network to VPC
- Best Practices of Security Group Change
- Troubleshooting
- API Documentation
- Making API Requests
- VPC APIs
- Route Table APIs
- Elastic Public IP APIs
- Elastic IPv6 APIs
- Highly Available Virtual IP APIs
- ENI APIs
- Bandwidth Package APIs
- NAT Gateway APIs
- Direct Connect Gateway APIs
- Cloud Connect Network APIs
- Network ACL APIs
- Network Detection-Related APIs
- Flow Log APIs
- Gateway Traffic Monitor APIs
- Private Link APIs
- Other APIs
- Subnet APIs
- VPN Gateway APIs
- Security Group APIs
- Network Parameter Template-Related APIs
- Snapshot Policy APIs
- FAQs
Classic Network
Last updated: 2024-10-22 15:27:16
The classic network is a public network resource pool for all Tencent Cloud users. The private IPs of all CVMs are assigned by Tencent Cloud. You cannot customize IP ranges or IP addresses. The VPC with an independent, controllable and more secure access are evolved from the classic network to meet the requirements of a growing number of users for more complex services.
Note:
As the classic network resources become increasingly scarce and cannot be expanded, Tencent Cloud accounts registered after June 13, 2017, 00:00:00 can create instances (including CVM and CLB) only in a VPC rather than the classic network. If you need to use classic network service, please submit an application.
Use Limits
The classic network-based CVMs do not support ENIs.
Migrating from the classic network to VPC is irreversible.
Classic Network vs. VPC
Both classic network and VPC are network spaces on the cloud.
The classic network is a public network resource pool for all Tencent Cloud users (as shown on the right side of the figure below). The private IPs of all CVMs are assigned by Tencent Cloud. You cannot customize IP ranges or IP addresses.
By contrast, the VPC is a logically isolated network space in Tencent Cloud (as shown on the left side of the figure below). In a VPC, you can customize IP ranges, IP addresses, and routing policies. VPC is more suitable for use cases requiring custom configurations.
Note:
You can use the
DescribeAccountAttributes API to query the network attributes of an account. If the supportedPlatforms value is only-vpc, the account is a default VPC user, who owns all cloud resources under VPCs. If the supportedPlatforms value is classic, the account is a default classic network user, who owns all cloud resources under the classic network.Reference
For more information about the communication plan between a VPC and the classic network, see Communicating with Classic Network.
For more information about Classiclink configurations, see Classiclink.
You can migrate your instances from the classic network to a VPC. For detailed directions, see Migrating from the Classic Network to VPC.
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