- 动态与公告
- 腾讯云网络总览
- 产品简介
- 购买指南
- 快速入门
- 操作指南
- 实践教程
- 故障处理
- API 文档
- History
- Introduction
- API Category
- Making API Requests
- EIP APIs
- Bandwidth Package APIs
- NAT Gateway APIs
- CreateNatGateway
- ModifyNatGatewayAttribute
- DescribeNatGateways
- ResetNatGatewayConnection
- ModifyNatGatewayDestinationIpPortTranslationNatRule
- DisassociateNatGatewayAddress
- DescribeNatGatewayDestinationIpPortTranslationNatRules
- DeleteNatGatewayDestinationIpPortTranslationNatRule
- DeleteNatGateway
- CreateNatGatewayDestinationIpPortTranslationNatRule
- AssociateNatGatewayAddress
- ModifyNatGatewaySourceIpTranslationNatRule
- DescribeNatGatewaySourceIpTranslationNatRules
- DeleteNatGatewaySourceIpTranslationNatRule
- CreateNatGatewaySourceIpTranslationNatRule
- RefreshDirectConnectGatewayRouteToNatGateway
- DescribeNatGatewayDirectConnectGatewayRoute
- Cloud Connect Network APIs
- DescribeCrossBorderCompliance
- SetCcnRegionBandwidthLimits
- ModifyCcnAttribute
- EnableCcnRoutes
- DisableCcnRoutes
- DetachCcnInstances
- DescribeCcns
- DescribeCcnRoutes
- DescribeCcnRegionBandwidthLimits
- DescribeCcnAttachedInstances
- DeleteCcn
- CreateCcn
- AttachCcnInstances
- ResetAttachCcnInstances
- RejectAttachCcnInstances
- AcceptAttachCcnInstances
- ModifyCcnRegionBandwidthLimitsType
- GetCcnRegionBandwidthLimits
- AuditCrossBorderCompliance
- ModifyCcnAttachedInstancesAttribute
- VPC APIs
- DeleteTrafficPackages
- DescribeUsedIpAddress
- DescribeAccountAttributes
- CreateDefaultVpc
- CreateVpc
- ModifyVpcAttribute
- DescribeVpcs
- DescribeVpcPrivateIpAddresses
- DescribeVpcInstances
- DeleteVpc
- AttachClassicLinkVpc
- DescribeClassicLinkInstances
- DetachClassicLinkVpc
- AssignIpv6CidrBlock
- DescribeVpcIpv6Addresses
- UnassignIpv6CidrBlock
- CreateAssistantCidr
- ModifyAssistantCidr
- DescribeAssistantCidr
- CheckAssistantCidr
- DeleteAssistantCidr
- DescribeVpcResourceDashboard
- ModifyLocalGateway
- DescribeLocalGateway
- DeleteLocalGateway
- CreateLocalGateway
- AdjustPublicAddress
- DescribeTrafficPackages
- Subnet APIs
- Route Table APIs
- Highly Available Virtual IP APIs
- ENI APIs
- AssignPrivateIpAddresses
- UnassignPrivateIpAddresses
- ModifyNetworkInterfaceAttribute
- DetachNetworkInterface
- DescribeNetworkInterfaces
- CreateNetworkInterface
- AttachNetworkInterface
- MigratePrivateIpAddress
- MigrateNetworkInterface
- DeleteNetworkInterface
- ModifyPrivateIpAddressesAttribute
- UnassignIpv6Addresses
- ModifyIpv6AddressesAttribute
- AssignIpv6Addresses
- DescribeNetworkInterfaceLimit
- DisassociateNetworkInterfaceSecurityGroups
- AssociateNetworkInterfaceSecurityGroups
- CreateAndAttachNetworkInterface
- VPN Gateway APIs
- GenerateVpnConnectionDefaultHealthCheckIp
- ResetVpnGatewayInternetMaxBandwidth
- ResetVpnConnection
- RenewVpnGateway
- ModifyVpnGatewayAttribute
- ModifyVpnConnectionAttribute
- ModifyCustomerGatewayAttribute
- InquiryPriceResetVpnGatewayInternetMaxBandwidth
- InquiryPriceRenewVpnGateway
- InquiryPriceCreateVpnGateway
- DownloadCustomerGatewayConfiguration
- DescribeVpnGateways
- DescribeVpnConnections
- DescribeCustomerGateways
- DescribeCustomerGatewayVendors
- DeleteVpnGateway
- DeleteVpnConnection
- DeleteCustomerGateway
- CreateVpnGateway
- CreateVpnConnection
- CreateCustomerGateway
- ModifyVpnGatewayCcnRoutes
- DescribeVpnGatewayCcnRoutes
- ModifyVpnGatewayRoutes
- DescribeVpnGatewayRoutes
- DeleteVpnGatewayRoutes
- CreateVpnGatewayRoutes
- SetVpnGatewaysRenewFlag
- Direct Connect Gateway APIs
- ReplaceDirectConnectGatewayCcnRoutes
- DescribeDirectConnectGatewayCcnRoutes
- DeleteDirectConnectGatewayCcnRoutes
- CreateDirectConnectGatewayCcnRoutes
- CreateDirectConnectGateway
- ModifyDirectConnectGatewayAttribute
- DescribeDirectConnectGateways
- DeleteDirectConnectGateway
- DisassociateDirectConnectGatewayNatGateway
- AssociateDirectConnectGatewayNatGateway
- InquirePriceCreateDirectConnectGateway
- Security Group APIs
- ReplaceSecurityGroupPolicies
- DeleteSecurityGroup
- DescribeSecurityGroupPolicies
- ModifySecurityGroupAttribute
- CreateSecurityGroup
- CreateSecurityGroupPolicies
- DescribeSecurityGroups
- DeleteSecurityGroupPolicies
- ModifySecurityGroupPolicies
- ReplaceSecurityGroupPolicy
- DescribeSecurityGroupAssociationStatistics
- DescribeSecurityGroupReferences
- CreateSecurityGroupWithPolicies
- CloneSecurityGroup
- Network ACL APIs
- Network Parameter Template-Related APIs
- CreateAddressTemplate
- CreateAddressTemplateGroup
- CreateServiceTemplate
- CreateServiceTemplateGroup
- DeleteAddressTemplate
- DeleteAddressTemplateGroup
- DeleteServiceTemplate
- DeleteServiceTemplateGroup
- DescribeAddressTemplateGroups
- DescribeAddressTemplates
- DescribeServiceTemplateGroups
- DescribeServiceTemplates
- ModifyAddressTemplateAttribute
- ModifyAddressTemplateGroupAttribute
- ModifyServiceTemplateAttribute
- ModifyServiceTemplateGroupAttribute
- Network Detection-Related APIs
- Flow Log APIs
- Gateway Traffic Monitor APIs
- Private Link APIs
- CreateVpcEndPointService
- DescribeVpcEndPointService
- ModifyVpcEndPointServiceAttribute
- DeleteVpcEndPointService
- CreateVpcEndPointServiceWhiteList
- DescribeVpcEndPointServiceWhiteList
- ModifyVpcEndPointServiceWhiteList
- EnableVpcEndPointConnect
- DeleteVpcEndPointServiceWhiteList
- DescribeVpcEndPoint
- CreateVpcEndPoint
- ModifyVpcEndPointAttribute
- DeleteVpcEndPoint
- DisassociateVpcEndPointSecurityGroups
- Snapshot Policy APIs
- Other APIs
- Error Codes
- Data Types
- 常见问题
- 联系我们
- 词汇表
- 动态与公告
- 腾讯云网络总览
- 产品简介
- 购买指南
- 快速入门
- 操作指南
- 实践教程
- 故障处理
- API 文档
- History
- Introduction
- API Category
- Making API Requests
- EIP APIs
- Bandwidth Package APIs
- NAT Gateway APIs
- CreateNatGateway
- ModifyNatGatewayAttribute
- DescribeNatGateways
- ResetNatGatewayConnection
- ModifyNatGatewayDestinationIpPortTranslationNatRule
- DisassociateNatGatewayAddress
- DescribeNatGatewayDestinationIpPortTranslationNatRules
- DeleteNatGatewayDestinationIpPortTranslationNatRule
- DeleteNatGateway
- CreateNatGatewayDestinationIpPortTranslationNatRule
- AssociateNatGatewayAddress
- ModifyNatGatewaySourceIpTranslationNatRule
- DescribeNatGatewaySourceIpTranslationNatRules
- DeleteNatGatewaySourceIpTranslationNatRule
- CreateNatGatewaySourceIpTranslationNatRule
- RefreshDirectConnectGatewayRouteToNatGateway
- DescribeNatGatewayDirectConnectGatewayRoute
- Cloud Connect Network APIs
- DescribeCrossBorderCompliance
- SetCcnRegionBandwidthLimits
- ModifyCcnAttribute
- EnableCcnRoutes
- DisableCcnRoutes
- DetachCcnInstances
- DescribeCcns
- DescribeCcnRoutes
- DescribeCcnRegionBandwidthLimits
- DescribeCcnAttachedInstances
- DeleteCcn
- CreateCcn
- AttachCcnInstances
- ResetAttachCcnInstances
- RejectAttachCcnInstances
- AcceptAttachCcnInstances
- ModifyCcnRegionBandwidthLimitsType
- GetCcnRegionBandwidthLimits
- AuditCrossBorderCompliance
- ModifyCcnAttachedInstancesAttribute
- VPC APIs
- DeleteTrafficPackages
- DescribeUsedIpAddress
- DescribeAccountAttributes
- CreateDefaultVpc
- CreateVpc
- ModifyVpcAttribute
- DescribeVpcs
- DescribeVpcPrivateIpAddresses
- DescribeVpcInstances
- DeleteVpc
- AttachClassicLinkVpc
- DescribeClassicLinkInstances
- DetachClassicLinkVpc
- AssignIpv6CidrBlock
- DescribeVpcIpv6Addresses
- UnassignIpv6CidrBlock
- CreateAssistantCidr
- ModifyAssistantCidr
- DescribeAssistantCidr
- CheckAssistantCidr
- DeleteAssistantCidr
- DescribeVpcResourceDashboard
- ModifyLocalGateway
- DescribeLocalGateway
- DeleteLocalGateway
- CreateLocalGateway
- AdjustPublicAddress
- DescribeTrafficPackages
- Subnet APIs
- Route Table APIs
- Highly Available Virtual IP APIs
- ENI APIs
- AssignPrivateIpAddresses
- UnassignPrivateIpAddresses
- ModifyNetworkInterfaceAttribute
- DetachNetworkInterface
- DescribeNetworkInterfaces
- CreateNetworkInterface
- AttachNetworkInterface
- MigratePrivateIpAddress
- MigrateNetworkInterface
- DeleteNetworkInterface
- ModifyPrivateIpAddressesAttribute
- UnassignIpv6Addresses
- ModifyIpv6AddressesAttribute
- AssignIpv6Addresses
- DescribeNetworkInterfaceLimit
- DisassociateNetworkInterfaceSecurityGroups
- AssociateNetworkInterfaceSecurityGroups
- CreateAndAttachNetworkInterface
- VPN Gateway APIs
- GenerateVpnConnectionDefaultHealthCheckIp
- ResetVpnGatewayInternetMaxBandwidth
- ResetVpnConnection
- RenewVpnGateway
- ModifyVpnGatewayAttribute
- ModifyVpnConnectionAttribute
- ModifyCustomerGatewayAttribute
- InquiryPriceResetVpnGatewayInternetMaxBandwidth
- InquiryPriceRenewVpnGateway
- InquiryPriceCreateVpnGateway
- DownloadCustomerGatewayConfiguration
- DescribeVpnGateways
- DescribeVpnConnections
- DescribeCustomerGateways
- DescribeCustomerGatewayVendors
- DeleteVpnGateway
- DeleteVpnConnection
- DeleteCustomerGateway
- CreateVpnGateway
- CreateVpnConnection
- CreateCustomerGateway
- ModifyVpnGatewayCcnRoutes
- DescribeVpnGatewayCcnRoutes
- ModifyVpnGatewayRoutes
- DescribeVpnGatewayRoutes
- DeleteVpnGatewayRoutes
- CreateVpnGatewayRoutes
- SetVpnGatewaysRenewFlag
- Direct Connect Gateway APIs
- ReplaceDirectConnectGatewayCcnRoutes
- DescribeDirectConnectGatewayCcnRoutes
- DeleteDirectConnectGatewayCcnRoutes
- CreateDirectConnectGatewayCcnRoutes
- CreateDirectConnectGateway
- ModifyDirectConnectGatewayAttribute
- DescribeDirectConnectGateways
- DeleteDirectConnectGateway
- DisassociateDirectConnectGatewayNatGateway
- AssociateDirectConnectGatewayNatGateway
- InquirePriceCreateDirectConnectGateway
- Security Group APIs
- ReplaceSecurityGroupPolicies
- DeleteSecurityGroup
- DescribeSecurityGroupPolicies
- ModifySecurityGroupAttribute
- CreateSecurityGroup
- CreateSecurityGroupPolicies
- DescribeSecurityGroups
- DeleteSecurityGroupPolicies
- ModifySecurityGroupPolicies
- ReplaceSecurityGroupPolicy
- DescribeSecurityGroupAssociationStatistics
- DescribeSecurityGroupReferences
- CreateSecurityGroupWithPolicies
- CloneSecurityGroup
- Network ACL APIs
- Network Parameter Template-Related APIs
- CreateAddressTemplate
- CreateAddressTemplateGroup
- CreateServiceTemplate
- CreateServiceTemplateGroup
- DeleteAddressTemplate
- DeleteAddressTemplateGroup
- DeleteServiceTemplate
- DeleteServiceTemplateGroup
- DescribeAddressTemplateGroups
- DescribeAddressTemplates
- DescribeServiceTemplateGroups
- DescribeServiceTemplates
- ModifyAddressTemplateAttribute
- ModifyAddressTemplateGroupAttribute
- ModifyServiceTemplateAttribute
- ModifyServiceTemplateGroupAttribute
- Network Detection-Related APIs
- Flow Log APIs
- Gateway Traffic Monitor APIs
- Private Link APIs
- CreateVpcEndPointService
- DescribeVpcEndPointService
- ModifyVpcEndPointServiceAttribute
- DeleteVpcEndPointService
- CreateVpcEndPointServiceWhiteList
- DescribeVpcEndPointServiceWhiteList
- ModifyVpcEndPointServiceWhiteList
- EnableVpcEndPointConnect
- DeleteVpcEndPointServiceWhiteList
- DescribeVpcEndPoint
- CreateVpcEndPoint
- ModifyVpcEndPointAttribute
- DeleteVpcEndPoint
- DisassociateVpcEndPointSecurityGroups
- Snapshot Policy APIs
- Other APIs
- Error Codes
- Data Types
- 常见问题
- 联系我们
- 词汇表
VPC 和子网的网段有什么限制？
腾讯云 VPC CIDR 支持使用以下私有网段中的任意一个：
10.0.0.0 - 10.255.255.255（掩码范围需在12 - 28之间）172.16.0.0 - 172.31.255.255（掩码范围需在12 - 28之间）192.168.0.0 - 192.168.255.255 （掩码范围需在16 - 28之间）子网的 CIDR 必须在私有网络的 CIDR 内或相同。
VPC 和子网的网段可以修改吗？
您在创建私有网络和子网时，需要指定其 CIDR，一旦创建即不可更改。
如何处理因 VPC 网段冲突而无法建立对等连接的问题？
建立对等连接时，要求两端 VPC 的 CIDR 不可以重叠，否则无法建立对等连接。
如果您两端 VPC 中，需要通信的子网网段不重叠，可以使用 云联网 来实现通信。云联网可以将 VPC 通信时的网段限制缩小到子网层面。
例如，您需要通信的两个 VPC 网段均为
10.0.0.0/16，但子网分别为10.0.1.0/24和10.0.2.0/24，则可以通过云联网实现通信。更多信息，请参考 云联网产品文档。如果云联网仍不能满足您的需求，则需要将重叠子网内的资源进行迁移。
VPC 内资源（CVM、数据库等）是否支持修改内网 IP？
云服务器主网卡的主内网 IP 支持修改，辅助网卡的主内网 IP 不支持修改，详情请参见 修改内网 IP 地址。
云数据库（TencentDB）支持修改内网 IP，例如修改 MySQL 的内网 IP，可参考 自定义 IP 端口。
负载均衡（CLB）不支持修改内网 IP 地址。
VPC 内的云服务器或数据库能否切换到其它 VPC？
目前支持云服务器、云数据库 MySQL 的迁移，暂不支持其他数据库的迁移。
云服务器可从当前 VPC 迁移至同账户下的其他 VPC 内，详细操作步骤和注意事项，请参见 切换私有网络服务。
云数据库 MySQL 可从当前 VPC 迁移至同账户下的其他 VPC 内，详细操作步骤和注意事项，请参见 切换网络。
弹性公网 IP 有什么作用？
弹性公网 IP 适用于以下场景：
1. 容灾
我们强烈建议您使用弹性公网 IP 来容灾。当您的某台服务器无法正常提供服务时，您可以将这台机器上的弹性公网 IP 解绑，并重新绑定到健康的机器上，帮您快速恢复服务。
2. 保留特定公网 IP
当您需要保留账户中的某个特定公网 IP 时，可将其转换为弹性公网 IP，绑定设备后，即可使用该 IP 进行公网访问。只要您不进行“释放”操作，该弹性公网 IP 便一直保留在您的账户中。
3. 其他特殊场景
当您有其他特殊情况需要替换 IP 时，可通过普通公网 IP 转换为弹性公网 IP，并绑定/解绑弹性公网 IP 的方式来实现。但弹性公网 IP 资源宝贵，单个账号下每个地域会有配额限制，建议您合理规划与使用。
如何保持公网 IP 地址不变？
当您需要保留账户中的某个特定公网 IP 时，可将其转换为弹性公网 IP，绑定设备后，即可使用该 IP 进行公网访问。只要您不进行“释放”操作，该弹性公网 IP 便一直保留在您的账户中。
相关操作指引，请参见 普通公网 IP 转 EIP。
弹性公网 IP 能否再转换为普通公网 IP？
弹性公网 IP 无法再次转换为普通公网 IP。
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