- Release Notes and Announcements
- Tencent Cloud Network Overview
- Product Introduction
- Purchase Guide
- Quick Start
- Operation Guide
- Network Topology
- Network performance dashboard
- Virtual Private Cloud (VPC)
- Subnets
- Route Tables
- IPs and ENIs
- Bandwidth Package
- Network Connection
- Security Management
- Diagnostic Tools
- Alarming and Monitoring
- Practical Tutorial
- View the Total Bandwidth for Single-Region Traffic-Based Billing
- Migrating from the Classic Network to VPC
- Best Practices of Security Group Change
- Configuring CVM Instance as Public Gateway
- Building HA Primary/Secondary Cluster with HAVIP + Keepalived
- Creating a High-availability Database by Using HAVIP + Windows Server Failover Cluster
- Hybrid Cloud Primary/Secondary Communication (DC and VPN)
- Hybrid Cloud Primary/Secondary Communication (CCN and VPN)
- CVM Access to Internet Through EIP
- Troubleshooting
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- VPC APIs
- CreateAssistantCidr
- DeleteAssistantCidr
- DeleteTrafficPackages
- DescribeClassicLinkInstances
- DescribeTrafficPackages
- ModifyAssistantCidr
- AssignIpv6CidrBlock
- CreateDefaultVpc
- CreateLocalGateway
- DeleteLocalGateway
- DescribeAccountAttributes
- DescribeAssistantCidr
- DescribeLocalGateway
- DescribeUsedIpAddress
- DescribeVpcInstances
- DescribeVpcIpv6Addresses
- DescribeVpcPrivateIpAddresses
- ModifyLocalGateway
- UnassignIpv6CidrBlock
- AttachClassicLinkVpc
- CheckAssistantCidr
- DeleteVpc
- DescribeVpcResourceDashboard
- DetachClassicLinkVpc
- CreateVpc
- DescribeVpcs
- AdjustPublicAddress
- ModifyVpcAttribute
- ModifyReserveIpAddress
- DescribeReserveIpAddresses
- DeleteReserveIpAddresses
- CreateReserveIpAddresses
- Route Table APIs
- EIP APIs
- Highly Available Virtual IP APIs
- ENI APIs
- AssignIpv6Addresses
- AssignPrivateIpAddresses
- AssociateNetworkInterfaceSecurityGroups
- CreateAndAttachNetworkInterface
- CreateNetworkInterface
- DescribeNetworkInterfaceLimit
- DisassociateNetworkInterfaceSecurityGroups
- ModifyIpv6AddressesAttribute
- ModifyNetworkInterfaceAttribute
- UnassignIpv6Addresses
- DeleteNetworkInterface
- DescribeNetworkInterfaces
- DetachNetworkInterface
- MigrateNetworkInterface
- MigratePrivateIpAddress
- ModifyPrivateIpAddressesAttribute
- UnassignPrivateIpAddresses
- AttachNetworkInterface
- Bandwidth Package APIs
- NAT Gateway APIs
- CreateNatGatewayDestinationIpPortTranslationNatRule
- CreateNatGatewaySourceIpTranslationNatRule
- DeleteNatGateway
- DeleteNatGatewayDestinationIpPortTranslationNatRule
- DeleteNatGatewaySourceIpTranslationNatRule
- DescribeNatGatewayDestinationIpPortTranslationNatRules
- DescribeNatGatewayDirectConnectGatewayRoute
- DescribeNatGatewaySourceIpTranslationNatRules
- DescribeNatGateways
- DisassociateNatGatewayAddress
- ModifyNatGatewayDestinationIpPortTranslationNatRule
- ModifyNatGatewaySourceIpTranslationNatRule
- RefreshDirectConnectGatewayRouteToNatGateway
- ResetNatGatewayConnection
- AssociateNatGatewayAddress
- CreateNatGateway
- ModifyNatGatewayAttribute
- Direct Connect Gateway APIs
- CreateDirectConnectGateway
- CreateDirectConnectGatewayCcnRoutes
- DeleteDirectConnectGateway
- DeleteDirectConnectGatewayCcnRoutes
- DescribeDirectConnectGatewayCcnRoutes
- DescribeDirectConnectGateways
- InquirePriceCreateDirectConnectGateway
- ModifyDirectConnectGatewayAttribute
- ReplaceDirectConnectGatewayCcnRoutes
- AssociateDirectConnectGatewayNatGateway
- DisassociateDirectConnectGatewayNatGateway
- Cloud Connect Network APIs
- AcceptAttachCcnInstances
- DescribeCrossBorderCompliance
- DetachCcnInstances
- EnableCcnRoutes
- ModifyCcnAttachedInstancesAttribute
- ModifyCcnAttribute
- RejectAttachCcnInstances
- ResetAttachCcnInstances
- CreateCcn
- DeleteCcn
- DisableCcnRoutes
- SetCcnRegionBandwidthLimits
- AttachCcnInstances
- DescribeCcnRegionBandwidthLimits
- AuditCrossBorderCompliance
- DescribeCcnAttachedInstances
- DescribeCcnRoutes
- DescribeCcns
- GetCcnRegionBandwidthLimits
- ModifyCcnRegionBandwidthLimitsType
- Network ACL APIs
- Network Detection-Related APIs
- Flow Log APIs
- Gateway Traffic Monitor APIs
- Private Link APIs
- CreateVpcEndPoint
- CreateVpcEndPointService
- CreateVpcEndPointServiceWhiteList
- DeleteVpcEndPoint
- DeleteVpcEndPointService
- DeleteVpcEndPointServiceWhiteList
- DescribeVpcEndPointServiceWhiteList
- DisassociateVpcEndPointSecurityGroups
- ModifyVpcEndPointAttribute
- ModifyVpcEndPointServiceWhiteList
- ModifyVpcEndPointServiceAttribute
- DescribeVpcEndPoint
- EnableVpcEndPointConnect
- DescribeVpcEndPointService
- Other APIs
- Subnet APIs
- VPN Gateway APIs
- RenewVpnGateway
- ModifyVpnGatewayRoutes
- CreateVpnGatewayRoutes
- DeleteVpnGatewayRoutes
- DescribeCustomerGateways
- DescribeVpnConnections
- DescribeVpnGatewayCcnRoutes
- DescribeVpnGatewayRoutes
- DownloadCustomerGatewayConfiguration
- ModifyVpnGatewayCcnRoutes
- SetVpnGatewaysRenewFlag
- CreateCustomerGateway
- CreateVpnConnection
- CreateVpnGateway
- DeleteCustomerGateway
- DeleteVpnConnection
- DeleteVpnGateway
- DescribeCustomerGatewayVendors
- DescribeVpnGateways
- GenerateVpnConnectionDefaultHealthCheckIp
- InquiryPriceRenewVpnGateway
- InquiryPriceResetVpnGatewayInternetMaxBandwidth
- ModifyCustomerGatewayAttribute
- ModifyVpnConnectionAttribute
- ModifyVpnGatewayAttribute
- ResetVpnConnection
- ResetVpnGatewayInternetMaxBandwidth
- InquiryPriceCreateVpnGateway
- Security Group APIs
- DescribeSecurityGroupReferences
- CloneSecurityGroup
- DeleteSecurityGroup
- DeleteSecurityGroupPolicies
- DescribeSecurityGroupAssociationStatistics
- DescribeSecurityGroupPolicies
- DescribeSecurityGroups
- ModifySecurityGroupAttribute
- ModifySecurityGroupPolicies
- ReplaceSecurityGroupPolicies
- ReplaceSecurityGroupPolicy
- CreateSecurityGroupPolicies
- CreateSecurityGroupWithPolicies
- CreateSecurityGroup
- Network Parameter Template-Related APIs
- CreateAddressTemplate
- CreateAddressTemplateGroup
- DeleteAddressTemplate
- DeleteAddressTemplateGroup
- DeleteServiceTemplate
- DeleteServiceTemplateGroup
- DescribeAddressTemplateGroups
- DescribeAddressTemplates
- DescribeServiceTemplateGroups
- DescribeServiceTemplates
- ModifyAddressTemplateAttribute
- ModifyAddressTemplateGroupAttribute
- ModifyServiceTemplateGroupAttribute
- CreateServiceTemplate
- CreateServiceTemplateGroup
- ModifyServiceTemplateAttribute
- Snapshot Policy APIs
- Error Codes
- Data Types
- FAQs
- Contact Us
- Glossary
- Release Notes and Announcements
- Tencent Cloud Network Overview
- Product Introduction
- Purchase Guide
- Quick Start
- Operation Guide
- Network Topology
- Network performance dashboard
- Virtual Private Cloud (VPC)
- Subnets
- Route Tables
- IPs and ENIs
- Bandwidth Package
- Network Connection
- Security Management
- Diagnostic Tools
- Alarming and Monitoring
- Practical Tutorial
- View the Total Bandwidth for Single-Region Traffic-Based Billing
- Migrating from the Classic Network to VPC
- Best Practices of Security Group Change
- Configuring CVM Instance as Public Gateway
- Building HA Primary/Secondary Cluster with HAVIP + Keepalived
- Creating a High-availability Database by Using HAVIP + Windows Server Failover Cluster
- Hybrid Cloud Primary/Secondary Communication (DC and VPN)
- Hybrid Cloud Primary/Secondary Communication (CCN and VPN)
- CVM Access to Internet Through EIP
- Troubleshooting
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- VPC APIs
- CreateAssistantCidr
- DeleteAssistantCidr
- DeleteTrafficPackages
- DescribeClassicLinkInstances
- DescribeTrafficPackages
- ModifyAssistantCidr
- AssignIpv6CidrBlock
- CreateDefaultVpc
- CreateLocalGateway
- DeleteLocalGateway
- DescribeAccountAttributes
- DescribeAssistantCidr
- DescribeLocalGateway
- DescribeUsedIpAddress
- DescribeVpcInstances
- DescribeVpcIpv6Addresses
- DescribeVpcPrivateIpAddresses
- ModifyLocalGateway
- UnassignIpv6CidrBlock
- AttachClassicLinkVpc
- CheckAssistantCidr
- DeleteVpc
- DescribeVpcResourceDashboard
- DetachClassicLinkVpc
- CreateVpc
- DescribeVpcs
- AdjustPublicAddress
- ModifyVpcAttribute
- ModifyReserveIpAddress
- DescribeReserveIpAddresses
- DeleteReserveIpAddresses
- CreateReserveIpAddresses
- Route Table APIs
- EIP APIs
- Highly Available Virtual IP APIs
- ENI APIs
- AssignIpv6Addresses
- AssignPrivateIpAddresses
- AssociateNetworkInterfaceSecurityGroups
- CreateAndAttachNetworkInterface
- CreateNetworkInterface
- DescribeNetworkInterfaceLimit
- DisassociateNetworkInterfaceSecurityGroups
- ModifyIpv6AddressesAttribute
- ModifyNetworkInterfaceAttribute
- UnassignIpv6Addresses
- DeleteNetworkInterface
- DescribeNetworkInterfaces
- DetachNetworkInterface
- MigrateNetworkInterface
- MigratePrivateIpAddress
- ModifyPrivateIpAddressesAttribute
- UnassignPrivateIpAddresses
- AttachNetworkInterface
- Bandwidth Package APIs
- NAT Gateway APIs
- CreateNatGatewayDestinationIpPortTranslationNatRule
- CreateNatGatewaySourceIpTranslationNatRule
- DeleteNatGateway
- DeleteNatGatewayDestinationIpPortTranslationNatRule
- DeleteNatGatewaySourceIpTranslationNatRule
- DescribeNatGatewayDestinationIpPortTranslationNatRules
- DescribeNatGatewayDirectConnectGatewayRoute
- DescribeNatGatewaySourceIpTranslationNatRules
- DescribeNatGateways
- DisassociateNatGatewayAddress
- ModifyNatGatewayDestinationIpPortTranslationNatRule
- ModifyNatGatewaySourceIpTranslationNatRule
- RefreshDirectConnectGatewayRouteToNatGateway
- ResetNatGatewayConnection
- AssociateNatGatewayAddress
- CreateNatGateway
- ModifyNatGatewayAttribute
- Direct Connect Gateway APIs
- CreateDirectConnectGateway
- CreateDirectConnectGatewayCcnRoutes
- DeleteDirectConnectGateway
- DeleteDirectConnectGatewayCcnRoutes
- DescribeDirectConnectGatewayCcnRoutes
- DescribeDirectConnectGateways
- InquirePriceCreateDirectConnectGateway
- ModifyDirectConnectGatewayAttribute
- ReplaceDirectConnectGatewayCcnRoutes
- AssociateDirectConnectGatewayNatGateway
- DisassociateDirectConnectGatewayNatGateway
- Cloud Connect Network APIs
- AcceptAttachCcnInstances
- DescribeCrossBorderCompliance
- DetachCcnInstances
- EnableCcnRoutes
- ModifyCcnAttachedInstancesAttribute
- ModifyCcnAttribute
- RejectAttachCcnInstances
- ResetAttachCcnInstances
- CreateCcn
- DeleteCcn
- DisableCcnRoutes
- SetCcnRegionBandwidthLimits
- AttachCcnInstances
- DescribeCcnRegionBandwidthLimits
- AuditCrossBorderCompliance
- DescribeCcnAttachedInstances
- DescribeCcnRoutes
- DescribeCcns
- GetCcnRegionBandwidthLimits
- ModifyCcnRegionBandwidthLimitsType
- Network ACL APIs
- Network Detection-Related APIs
- Flow Log APIs
- Gateway Traffic Monitor APIs
- Private Link APIs
- CreateVpcEndPoint
- CreateVpcEndPointService
- CreateVpcEndPointServiceWhiteList
- DeleteVpcEndPoint
- DeleteVpcEndPointService
- DeleteVpcEndPointServiceWhiteList
- DescribeVpcEndPointServiceWhiteList
- DisassociateVpcEndPointSecurityGroups
- ModifyVpcEndPointAttribute
- ModifyVpcEndPointServiceWhiteList
- ModifyVpcEndPointServiceAttribute
- DescribeVpcEndPoint
- EnableVpcEndPointConnect
- DescribeVpcEndPointService
- Other APIs
- Subnet APIs
- VPN Gateway APIs
- RenewVpnGateway
- ModifyVpnGatewayRoutes
- CreateVpnGatewayRoutes
- DeleteVpnGatewayRoutes
- DescribeCustomerGateways
- DescribeVpnConnections
- DescribeVpnGatewayCcnRoutes
- DescribeVpnGatewayRoutes
- DownloadCustomerGatewayConfiguration
- ModifyVpnGatewayCcnRoutes
- SetVpnGatewaysRenewFlag
- CreateCustomerGateway
- CreateVpnConnection
- CreateVpnGateway
- DeleteCustomerGateway
- DeleteVpnConnection
- DeleteVpnGateway
- DescribeCustomerGatewayVendors
- DescribeVpnGateways
- GenerateVpnConnectionDefaultHealthCheckIp
- InquiryPriceRenewVpnGateway
- InquiryPriceResetVpnGatewayInternetMaxBandwidth
- ModifyCustomerGatewayAttribute
- ModifyVpnConnectionAttribute
- ModifyVpnGatewayAttribute
- ResetVpnConnection
- ResetVpnGatewayInternetMaxBandwidth
- InquiryPriceCreateVpnGateway
- Security Group APIs
- DescribeSecurityGroupReferences
- CloneSecurityGroup
- DeleteSecurityGroup
- DeleteSecurityGroupPolicies
- DescribeSecurityGroupAssociationStatistics
- DescribeSecurityGroupPolicies
- DescribeSecurityGroups
- ModifySecurityGroupAttribute
- ModifySecurityGroupPolicies
- ReplaceSecurityGroupPolicies
- ReplaceSecurityGroupPolicy
- CreateSecurityGroupPolicies
- CreateSecurityGroupWithPolicies
- CreateSecurityGroup
- Network Parameter Template-Related APIs
- CreateAddressTemplate
- CreateAddressTemplateGroup
- DeleteAddressTemplate
- DeleteAddressTemplateGroup
- DeleteServiceTemplate
- DeleteServiceTemplateGroup
- DescribeAddressTemplateGroups
- DescribeAddressTemplates
- DescribeServiceTemplateGroups
- DescribeServiceTemplates
- ModifyAddressTemplateAttribute
- ModifyAddressTemplateGroupAttribute
- ModifyServiceTemplateGroupAttribute
- CreateServiceTemplate
- CreateServiceTemplateGroup
- ModifyServiceTemplateAttribute
- Snapshot Policy APIs
- Error Codes
- Data Types
- FAQs
- Contact Us
- Glossary
Use limits
The IP ranges of the VPC and subnet cannot be modified after creation.
For each subnet, Tencent Cloud reserves its first two IPs and the last one for IP networking. For example, if the subnet CIDR block is
172.16.0.0/24, then 172.16.0.0, 172.16.0.1, and 172.16.0.255 are reserved by Tencent Cloud.When you add a CVM to a VPC, the instance will be randomly assigned with a private IP from a specified subnet. You can reassign a private IP to it after the instance is created.
In a VPC, a CVM private IP corresponds to one public IP address.
Classic network-based CVMs cannot interconnect with cloud resources in the secondary CIDR block.
A peering connection does not support secondary CIDR blocks.
Cloud Connect Network, VPN gateway, and standard direct connect gateway support secondary CIDR blocks.
Quota limits
Resource | Limits |
Number of VPC instances per region per account | 20 |
Number of subnets per VPC | 100 |
Number of secondary CIDR blocks per VPC | 5 |
Note:
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