- What's New
- Function Overview
- Service Overview
- Getting Started
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User Guide
- Permissions Management
- VPC and Subnet
- Route Table and Route
- Virtual IP Address
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Elastic Network Interface and Supplementary Network Interface
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Elastic Network Interface
- Elastic Network Interface Overview
- Creating a Network Interface
- Viewing the Basic Information About a Network Interface
- Attaching a Network Interface to a Cloud Server
- Binding an EIP to a Network Interface
- Binding a Network Interface to a Virtual IP Address
- Detaching a Network Interface from an Instance or Unbinding an EIP from a Network Interface
- Changing Security Groups That Are Associated with a Network Interface
- Deleting a Network Interface
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Supplementary Network Interfaces
- Supplementary Network Interface Overview
- Creating a Supplementary Network Interface
- Viewing the Basic Information About a Supplementary Network Interface
- Binding or Unbinding an EIP to or from a Supplementary Network Interface
- Changing Security Groups That Are Associated with a Supplementary Network Interface
- Deleting a Supplementary Network Interface
- Network Interface Configuration Examples
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Elastic Network Interface
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Access Control
- Access Control Overview
- Security Group
- Network ACL
- IP Address Group
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VPC Peering Connection
- VPC Peering Connection Overview
- VPC Peering Connection Usage
- Creating a VPC Peering Connection to Connect Two VPCs in the Same Account
- Creating a VPC Peering Connection to Connect Two VPCs in Different Accounts
- Obtaining the Peer Project ID of a VPC Peering Connection
- Modifying a VPC Peering Connection
- Viewing VPC Peering Connections
- Deleting a VPC Peering Connection
- Modifying Routes Configured for a VPC Peering Connection
- Viewing Routes Configured for a VPC Peering Connection
- Deleting Routes Configured for a VPC Peering Connection
- IPv4/IPv6 Dual-Stack Network
- VPC Flow Log
- Elastic IP
- Shared Bandwidth
- Monitoring and Auditing
- Managing Quotas
- Best Practices
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API Reference
- Before You Start
- API Overview
- Calling APIs
- APIs
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API V3
- VPC
- Security Group
- Security Group Rule
- IP Address Group
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Supplementary Network Interface
- Creating a Supplementary Network Interface
- Creating Supplementary Network Interfaces in Batches
- Querying Supplementary Network Interfaces
- Querying the Details of a Supplementary Network Interface
- Querying the Number of Supplementary Network Interfaces
- Updating a Supplementary Network Interface
- Deleting a Supplementary Network Interface
- Network ACL
- Port
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Native OpenStack Neutron APIs (V2.0)
- API Version Information
- Port
- Network
- Subnet
- Router
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Network ACL
- Querying Network ACL Rules
- Querying a Network ACL Rule
- Creating a Network ACL Rule
- Updating a Network ACL Rule
- Deleting a Network ACL Rule
- Querying Network ACL Policies
- Querying a Network ACL Policy
- Creating a Network ACL Policy
- Updating a Network ACL Policy
- Deleting a Network ACL Policy
- Inserting a Network ACL Rule
- Removing a Network ACL Rule
- Querying Network ACL Groups
- Querying a Network ACL Group
- Creating a Network ACL Group
- Updating a Network ACL Group
- Deleting a Network ACL Group
- Security Group
- Application Examples
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Permissions and Supported Actions
- Introduction
- VPC
- Subnet
- Port
- VPC Peering Connection
- VPC Route
- Route Table
- Quota
- Private IP Address
- Security Group
- Security Group Rule
- VPC Tag
- Subnet Tag
- Port (OpenStack Neutron API)
- Network (OpenStack Neutron API)
- Subnet (OpenStack Neutron API)
- Router (OpenStack Neutron API)
- Network ACL (OpenStack Neutron API)
- Security Group (OpenStack Neutron API)
- Precautions for API Permissions
- FAQs
- Out-of-Date APIs
- Appendix
- SDK Reference
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FAQs
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Billing and Payments
- Will I Be Billed for Using the VPC Service?
- Why Is My VPC Still Being Billed After It Was Deleted?
- How Do I View My VPC Bills?
- How Is an EIP Charged?
- How Do I Change My EIP Billing Mode Between Pay-per-Use and Yearly/Monthly?
- How Do I Change the Billing Option of a Pay-per-Use EIP Between By Bandwidth and By Traffic?
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VPCs and Subnets
- What Is Virtual Private Cloud?
- Which CIDR Blocks Are Available for the VPC Service?
- How Many VPCs Can I Create?
- Can Subnets Communicate with Each Other?
- What Subnet CIDR Blocks Are Available?
- Can I Change the CIDR Block of a Subnet?
- How Many Subnets Can I Create?
- How Do I Make the Changed DHCP Lease Time of a Subnet Take Effect Immediately?
- Why Can't I Delete My VPCs and Subnets?
- Can I Change the VPC of an ECS?
- Why Is the ECS IP Address Released After the System Time Is Changed?
- How Do I Change the DNS Server Address of an ECS?
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EIPs
- How Do I Assign or Retrieve a Specific EIP?
- What Are the Differences Between EIP, Private IP Address, and Virtual IP Address?
- Can I Change the Dedicated Bandwidth Used by an EIP to a Shared Bandwidth?
- How Many ECSs Can I Bind an EIP To?
- How Do I Access an ECS with an EIP Bound from the Internet?
- What Is the EIP Assignment Policy?
- Can I Bind an EIP of an ECS to Another ECS?
- Can I Buy a Specific EIP?
- How Do I Query the Region of My EIPs?
- How Can I Unbind an Existing EIP from an Instance and Bind Another EIP to the Instance?
- Can I Bind an EIP to a Cloud Resource in Another Region?
- Can I Change the Region of an EIP?
- VPC Peering Connections
- Virtual IP Addresses
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Bandwidth
- What Are Inbound Bandwidth and Outbound Bandwidth?
- What Are the Differences Between Static BGP and Dynamic BGP?
- How Do I Know If My EIP Bandwidth Limit Has Been Exceeded?
- What Are the Differences Between Public Bandwidth and Private Bandwidth?
- What Bandwidth Types Are Available?
- What Are the Differences Between a Dedicated Bandwidth and a Shared Bandwidth?
- How Many EIPs Can I Add to Each Shared Bandwidth?
- Can I Increase a Yearly/Monthly Bandwidth and Decrease It Later?
- What Is the Relationship Between Bandwidth and Upload/Download Rate?
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Connectivity
- Does a VPN Allow Communication Between Two VPCs?
- Why Cannot I Access Public Websites Through Domain Names or Access Internal Domain Names on the Cloud When My ECS Has Multiple NICs?
- What Are the Priorities of the Custom Route and EIP If Both Are Configured for an ECS to Enable the ECS to Access the Internet?
- Why Are There Intermittent Interruptions When a Local Host Accesses a Website Built on an ECS?
- Why Do ECSs Using Private IP Addresses in the Same Subnet Only Support One-Way Communication?
- Why Does Communication Fail Between Two ECSs in the Same VPC or Packet Loss Occur When They Communicate?
- Why Can't My ECS Use Cloud-init?
- Why Can't My ECS Access the Internet Even After an EIP Is Bound?
- Why Is My ECS Unable to Communicate at a Layer 2 or Layer 3 Network?
- How Do I Handle a BMS Network Failure?
- Why Does My ECS Fail to Obtain an IP Address?
- How Do I Handle a VPN or Direct Connect Connection Network Failure?
- Why Can My Server Be Accessed from the Internet But Cannot Access the Internet?
- Why Can't I Access Websites Using IPv6 Addresses After IPv4/IPv6 Dual Stack Is Configured?
- Why Does My ECS Fail to Communicate with Other After It Has Firewall Installed?
- Routing
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Security
- Does a Modified Security Group Rule or a Network ACL Rule Take Effect Immediately for Existing Connections?
- Why Is Outbound Access on TCP Port 25 Blocked?
- How Do I Know the Instances Associated with a Security Group?
- Why Can't I Delete a Security Group?
- Can I Change the Security Group of an ECS?
- How Do I Configure a Security Group for Multi-Channel Protocols?
- Why Are Some Ports of ECSs Inaccessible?
- Why Is Access from a Specific IP Address Still Allowed After a Network ACL Rule That Denies the Access from the IP Address Has Been Added?
- Why Are My Security Group Rules Not Working?
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Billing and Payments
Show all
Function Overview
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OBS 2.0 Supported
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The Virtual Private Cloud (VPC) service enables you to provision logically isolated, configurable, and manageable virtual networks for cloud servers, cloud containers, and cloud databases, improving cloud service security and simplifying network deployment.
You can create security groups and VPNs, configure IP address ranges, and specify bandwidth sizes in your VPC. With a VPC, you can configure and manage the networks within the VPC, making changes to these networks as needed, quickly and securely. You can also define rules for communication between ECSs in the same security group or in different security groups.
Availability: All regions
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OBS 2.0 Supported
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A subnet is a unique CIDR block with a range of IP addresses in your VPC. All resources in a VPC must be deployed on subnets. Once a subnet has been created, its CIDR block cannot be modified.
HUAWEI CLOUD allows you to create subnets, modify subnet information, and delete subnets.
Availability: All regions
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OBS 2.0 Supported
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A route table contains routes, which are used to determine where traffic is directed.
When you create a VPC, the system automatically creates a default route table. The route table ensures that all subnets in the VPC can communicate with each other. You can also add custom routes to control where traffic is directed.
HUAWEI CLOUD allows you to add, query, modify, and delete routes.
Availability: All regions
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OBS 2.0 Supported
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A virtual IP address is not allocated to an actual ECS NIC. An ECS can have both private and virtual IP addresses, and you can access the ECS through either one. In addition, the virtual IP address has the same network access capability as the private IP address. Virtual IP addresses are used for high availability as they make active/standby ECS switchover possible.
HUAWEI CLOUD allows you to assign virtual IP addresses, delete virtual IP addresses, bind an EIP or ECS to a virtual IP address, and access a virtual IP address through an EIP, a VPN, a Direct Connect connection, or a VPC peering connection.
Networking mode 1: HA
If you want to improve service availability and avoid single points of failure, you can deploy ECSs in the active/standby mode or one active and multiple standby mode. In this arrangement, the ECSs all use the same virtual IP address. If the active ECS becomes faulty, a standby ECS takes over services from the active ECS and services continue uninterrupted.
(1) In this configuration, two ECSs in a subnet are bound to a single virtual IP address.
(2) Keepalived is then used to configure the two ECSs to work in the active/standby mode. Follow industry standards for configuring Keepalived. The details are not included here.Networking mode 2: HA load balancing cluster
If you want to build a high-availability load balancing cluster, use Keepalived and configure LVS nodes as direct routers.(1) Bind two ECSs to the same virtual IP address.
(2) Configure the two ECSs as LVS nodes working as direct routers and use Keepalived to configure the nodes in the active/standby mode. The two ECSs will evenly forward requests to different backend servers.
(3) Configure another two ECSs as backend servers.
(4) Disable the source/destination check for the two servers.
Follow industry standards for configuring Keepalived. The details are not included here.Availability: All regions
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OBS 2.0 Supported
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IPv4 and IPv6 dual stack allows your resources to use both the IPv4 and IPv6 addresses for private and public network communication.
If your application needs to provide services for users who use IPv6 clients, you can use IPv6 EIPs or the IPv4 and IPv6 dual-stack function.If your application needs to both provide services for users who use IPv6 clients and analyze the access request data, you can use only the IPv4 and IPv6 dual-stack function.
If internal communication is required between your application systems or between your application system and another system (such as the database system), you can use only the IPv4 and IPv6 dual-stack function.
HUAWEI CLOUD supports the IPv4/IPv6 dual stack. You can create an IPv4/IPv6 dual-stack network or add an IPv6 subnet to an existing VPC to form a dual-stack network.
Availability: CN North-Beijing4, CN East-Shanghai1, CN South-Guangzhou, CN Southwest-Guiyang1, CN-Hong Kong, AP-Bangkok, AP-Singapore, and LA-Mexico City1
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OBS 2.0 Supported
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A security group is a collection of access control rules for ECSs that have the same security protection requirements and are mutually trusted within a VPC.
After a security group is created, you can create different access rules for the security group to protect the ECSs that are added to this security group.HUAWEI CLOUD allows you to create, delete security groups, add, quickly add multiple security group rules, replicate security group rules, modify, delete, import or export security group rules, view the security group of an ECS, change the security group of an ECS, and add cloud resources to or remove them from a security group.
Availability for deny action, nonconsecutive ports, and priority configurations: CN North-Beijing4, CN East-Shanghai1, CN South-Guangzhou, CN Southwest-Guiyang1, CN-Hong Kong, AP-Singapore, AF-Johannesburg, LA-Mexico City1, LA-Mexico City2, and LA-Sao Paulo1
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OBS 2.0 Supported
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A network ACL is an optional layer of security for your subnets. You associate one or more subnets with a network ACL. The network ACL can help you control traffic in and out of the subnets.
Similar to security groups, network ACLs control access to the network. They add an additional layer of defense to your VPC. Security groups operate at the ECS level, whereas network ACLs operate at the subnet level. You can use network ACLs together with security groups to implement access control that is both comprehensive and fine-grained.
HUAWEI CLOUD allows you to create, view, modify, delete, enable, disable network ACLs, associate subnets with or disassociate them from network ACLs, add, modify, change the sequence of, enable, disable, and delete network ACL rules.Availability: All regions
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OBS 2.0 Supported
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An EIP is a public IP address that can be accessed directly over the Internet. An EIP consists of a public IP address and some amount of public network egress bandwidth. You can bind EIPs to or unbind them from cloud resources.
HUAWEI CLOUD allows you to assign EIPs, bind EIPs to cloud resources, unbind EIPs from cloud resources, release EIPs, modify EIP bandwidth, and upgrade static BGP to dynamic BGP.
Availability for IPv6 function: CN North-Beijing4, CN East-Shanghai1, and CN South-Guangzhou
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OBS 2.0 Supported
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Shared bandwidth allows multiple EIPs to share the same bandwidth. All ECSs, BMSs, and load balancers that have EIPs bound in a region can use the same bandwidth.
When you host a large number of applications on the cloud, if each EIP uses an independent bandwidth, a lot of bandwidths are required, which incurs high bandwidth costs. If all EIPs share the same bandwidth, your network operation costs will be lowered and your system O&M as well as resource statistics will be simplified.
HUAWEI CLOUD allows you to assign, modify, delete a shared bandwidth, add EIPs to a shared bandwidth, and remove EIPs from a shared bandwidth.Availability: All regions
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OBS 2.0 Supported
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A VPC peering connection is a network connection between two VPCs. A VPC peering connection allows two VPCs communicate with each other using private IP addresses as if they were in the same VPC. You can create a VPC peering connection between your own VPCs, or between your VPC and a VPC of another account within the same region. A VPC peering connection between VPCs in different regions will not take effect.
HUAWEI CLOUD allows you to create a VPC peering connection with another VPC in your account or with a VPC in another account. You can also view, modify, and delete VPC peering connections.
Availability: All regions
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