Subnet

VPC VPC

  • API Reference
    • ACL-Related Interfaces
      • Add ACL rule
      • Delete ACL rules
      • Query ACL rules
      • Query ACL
      • Update ACL rules
    • API function release records
    • API Overview
    • Appendix
    • Common Headers and Error Responses
    • Dedicated Gateway-Related Interfaces
      • Bind physical dedicated line
      • Create dedicated gateway
      • Create health check for dedicated gateway
      • Query dedicated gateway details
      • Query dedicated gateway list
      • Release dedicated gateway
      • Unbind physical dedicated line
      • Update dedicated gateway
    • Elastic Network Interface-Related Interfaces
      • Add intranet IP to elastic network interface in batches
      • Add Secondary IP Address of Elastic Network Interface
      • Create elastic network interface
      • Delete elastic network interface
      • Delete Intranet IP from elastic network interface in batches
      • Delete Secondary IP Address of Elastic Network Interface
      • Elastic network interface binds to EIP
      • Elastic Network Interface Mounts Cloud Product Instance
      • Elastic network interface unbinds from EIP
      • Elastic Network Interface Unmounts Cloud Product Instance
      • Query elastic network interface list
      • Query elastic network interface status
      • Query the specified elastic network interface
      • Update elastic network interface with enterprise security group
      • Update elastic network interface with regular security group
      • Update elastic network interface
    • Gateway Bandwidth Limiting Rule Related Interfaces
      • Create gateway bandwidth limiting rules
      • Delete Gateway Bandwidth Limiting Rule
      • Modify Gateway Bandwidth Limiting Rule
      • View Gateway Bandwidth Limiting Rule
    • General Description
    • High-Availability Virtual IP Address(HAVIP) Related Interfaces
      • Bind EIP to high-availability virtual IP address
      • Bind instance to high-availability virtual IP address
      • Create high-availability virtual IP address
      • Delete high-availability virtual IP address
      • Query high-availability virtual IP address list
      • Query the specified high-availability virtual IP address
      • Unbind EIP from high-availability virtual IP address
      • Unbind instance from high-availability virtual IP address
      • Update high-availability virtual IP address
    • Interface Overview
    • IPv6 Gateway-Related Interfaces
      • Add IPv6 egress-only policy
      • Bandwidth resizing for IPv6 gateway
      • Create IPv6 gateway bandwidth limiting policy
      • Create IPv6 gateway
      • Delete IPv6 gateway bandwidth limiting policy
      • Delete IPv6 Gateway
      • Delete the IPv6 egress-only policy
      • Query IPv6 gateway bandwidth limiting policy list
      • Query IPv6 gateway
      • Query the IPv6 egress-only policy list
      • Update IPv6 gateway bandwidth limiting policy
      • Update the IPv6 gateway release protection switch
    • NAT Gateway-Related Interfaces
      • Bind DNAT EIP to the NAT gateway
      • Bind SNAT EIP to the NAT gateway
      • Create DNAT rules in batches
      • Create DNAT rules
      • Create NAT gateway
      • Create SNAT rules in batches
      • Create SNAT rules
      • Delete DNAT rules
      • Delete SNAT rules
      • NAT Gateway Binds EIP
      • NAT gateway renewal
      • NAT Gateway Resize
      • NAT Gateway Unbinds EIP
      • Query DNAT rules
      • Query NAT gateway details
      • Query NAT gateway list
      • Query SNAT rules
      • Release NAT gateway
      • Unbind DNAT EIP from the NAT gateway
      • Unbind SNAT EIP from the NAT gateway
      • Update DNAT rules
      • Update NAT Delete Protection Switch
      • Update NAT gateway name
      • Update SNAT rules
    • Network Detection Related Interfaces
      • Create Network Probe
      • Delete network probe
      • Query network probe details
      • Query network probe list.
      • Update probe
    • Parameter Template-Related Interfaces
      • Add IP addresses to the IP address family
      • Add IP addresses to the IP address group
      • Create IP address family
      • Create IP address set
      • Delete IP address family
      • Delete IP address from IP address group
      • Delete IP address set
      • Query IP address family list
      • Query IP address group list
      • Query specified IP address family
      • Query specified IP address group
      • Remove IP address group from IP address family
      • Update IP address family
      • Update IP address set
    • Peering Connections-Related Interfaces
      • Application to process the peering connection
      • Bandwidth resizing for peering connections
      • Create peering connections
      • Disable DNS synchronization for the peering connections.
      • Enable DNS synchronization for the peering connections
      • List of peering connections to be queried.
      • Peering connection renewal
      • Release peering connections
      • Update the local API name and remarks for peering connections
      • Update the peering connection release protection switch
      • View details of peering connection
    • Route Table Related Interfaces
      • Create route rules
      • Delete route rules
      • Primary-standby switch
      • Query route table
      • Query routing rules
      • Update route rules
    • Security Group Related Interfaces
      • Enterprise security group
        • Authorize enterprise security group rules
        • Create enterprise security group
        • Delete enterprise security group rules
        • Delete enterprise security group
        • Query enterprise security group list
        • Update enterprise security group rules
      • Regular security group
        • Authorize regular security group rules
        • Create regular security group
        • Delete regular security group rules
        • Delete regular security group
        • Query regular security group list
        • Revoke regular security group rules
        • Update regular security group rules
        • View security group details
    • Service domain
    • Service Network Interface Card (SNIC)-Related Interfaces
      • Create service network interface card
      • Delete service network interface card
      • Query mountable public services
      • Query service network interface card details
      • Query service network interface card list
      • Update regular security group for service network interface card
      • Update service network interface card with enterprise security group
      • Update the service network interface card
    • Subnet-Related Interfaces
      • Create reserved network segment
      • Create subnet
      • Delete reserved network segment
      • Delete subnet
      • Query specified subnet
      • Query subnet list
      • Query the reserved network segment list
      • Update subnet
    • VPC-Related Interfaces
      • Create VPC
      • Delete VPC
      • Open VPC relay
      • Query IP Usage by Products in VPC
      • Query specified VPC
      • Query VPC intranet IP
      • Query VPC list
      • Shut down VPC relay
      • Update VPC
    • VPN-Related Interfaces
      • Bind EIP
      • Create SSL VPN server
      • Create SSL VPN users in batches
      • Create VPN tunnel
      • Create VPN
      • Delete SSL VPN server
      • Delete SSL VPN user
      • Delete VPN tunnel
      • Query SSL-VPN server
      • Query SSL-VPN user
      • Query VPN details
      • Query VPN List
      • Query VPN tunnels
      • Release VPN
      • Unbind EIP
      • Update SSL VPN server
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      • Update VPN release protection switch
      • Update VPN tunnel
      • Update VPN
      • VPN gateway renewal
    • High-Availability Virtual IP Address (HAVIP) Related Interfaces
      • Bind EIP to high-availability virtual IP address
      • Bind instance to high-availability virtual IP address
      • Create high-availability virtual IP address
      • Delete high-availability virtual IP address
      • Query high-availability virtual IP address list
      • Query the specified high-availability virtual IP address
      • Unbind EIP from high-availability virtual IP address
      • Unbind instance from high-availability virtual IP address
      • Update high-availability virtual IP address
  • FAQs
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  • Function Release Records
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      • NAT Gateway Instance Diagnosis
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        • Private Network NAT(Network Address Translation) Gateway
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        • GRE VPN Gateway
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    • Network Diagnostics
      • Flow log
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    • Network interface card
      • Elastic network interface
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    • Network topology
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  • Product Description
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    • Java-SDK
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      • vpc
    • Python-SDK
      • ACL
      • Dedicated gateway
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  • Service Level Agreement (SLA)
    • IPv6 Gateway Service Level Agreement SLA
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  • Typical Practices
    • Configure Custom Service and Use Service Network Interface Card(SNIC) to Provide Service for Other VPCs
    • HAVIP Combined with Keepalived to Achieve Master-Backup Multi-Machine High Availability
    • Layer 2 Gateway Combined with Dedicated Line Access ET to Build Large Layer 2 Network Between IDC and Cloud VPC
    • Network Layer Security Description
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    • Security Group Configuration Practice (Advanced Level)
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    • Typical Practice of Managing Elastic Network Interface Using Terraform
    • Typical Practice of Managing IPsec VPN Gateway Using Terraform
    • Using Keepalived in VPC to Achieve High-Availability Architecture
    • VPC Custom Route Table to Achieve Secure Traffic Mutual Access
    • Windows Using HAVIP to Configure Master-Backup Multi-Machine
    • Configure Custom Service and Use Service Network Interface Card (SNIC) to Provide Service for Other VPCs
  • VPC CLI
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VPC VPC

  • API Reference
    • ACL-Related Interfaces
      • Add ACL rule
      • Delete ACL rules
      • Query ACL rules
      • Query ACL
      • Update ACL rules
    • API function release records
    • API Overview
    • Appendix
    • Common Headers and Error Responses
    • Dedicated Gateway-Related Interfaces
      • Bind physical dedicated line
      • Create dedicated gateway
      • Create health check for dedicated gateway
      • Query dedicated gateway details
      • Query dedicated gateway list
      • Release dedicated gateway
      • Unbind physical dedicated line
      • Update dedicated gateway
    • Elastic Network Interface-Related Interfaces
      • Add intranet IP to elastic network interface in batches
      • Add Secondary IP Address of Elastic Network Interface
      • Create elastic network interface
      • Delete elastic network interface
      • Delete Intranet IP from elastic network interface in batches
      • Delete Secondary IP Address of Elastic Network Interface
      • Elastic network interface binds to EIP
      • Elastic Network Interface Mounts Cloud Product Instance
      • Elastic network interface unbinds from EIP
      • Elastic Network Interface Unmounts Cloud Product Instance
      • Query elastic network interface list
      • Query elastic network interface status
      • Query the specified elastic network interface
      • Update elastic network interface with enterprise security group
      • Update elastic network interface with regular security group
      • Update elastic network interface
    • Gateway Bandwidth Limiting Rule Related Interfaces
      • Create gateway bandwidth limiting rules
      • Delete Gateway Bandwidth Limiting Rule
      • Modify Gateway Bandwidth Limiting Rule
      • View Gateway Bandwidth Limiting Rule
    • General Description
    • High-Availability Virtual IP Address(HAVIP) Related Interfaces
      • Bind EIP to high-availability virtual IP address
      • Bind instance to high-availability virtual IP address
      • Create high-availability virtual IP address
      • Delete high-availability virtual IP address
      • Query high-availability virtual IP address list
      • Query the specified high-availability virtual IP address
      • Unbind EIP from high-availability virtual IP address
      • Unbind instance from high-availability virtual IP address
      • Update high-availability virtual IP address
    • Interface Overview
    • IPv6 Gateway-Related Interfaces
      • Add IPv6 egress-only policy
      • Bandwidth resizing for IPv6 gateway
      • Create IPv6 gateway bandwidth limiting policy
      • Create IPv6 gateway
      • Delete IPv6 gateway bandwidth limiting policy
      • Delete IPv6 Gateway
      • Delete the IPv6 egress-only policy
      • Query IPv6 gateway bandwidth limiting policy list
      • Query IPv6 gateway
      • Query the IPv6 egress-only policy list
      • Update IPv6 gateway bandwidth limiting policy
      • Update the IPv6 gateway release protection switch
    • NAT Gateway-Related Interfaces
      • Bind DNAT EIP to the NAT gateway
      • Bind SNAT EIP to the NAT gateway
      • Create DNAT rules in batches
      • Create DNAT rules
      • Create NAT gateway
      • Create SNAT rules in batches
      • Create SNAT rules
      • Delete DNAT rules
      • Delete SNAT rules
      • NAT Gateway Binds EIP
      • NAT gateway renewal
      • NAT Gateway Resize
      • NAT Gateway Unbinds EIP
      • Query DNAT rules
      • Query NAT gateway details
      • Query NAT gateway list
      • Query SNAT rules
      • Release NAT gateway
      • Unbind DNAT EIP from the NAT gateway
      • Unbind SNAT EIP from the NAT gateway
      • Update DNAT rules
      • Update NAT Delete Protection Switch
      • Update NAT gateway name
      • Update SNAT rules
    • Network Detection Related Interfaces
      • Create Network Probe
      • Delete network probe
      • Query network probe details
      • Query network probe list.
      • Update probe
    • Parameter Template-Related Interfaces
      • Add IP addresses to the IP address family
      • Add IP addresses to the IP address group
      • Create IP address family
      • Create IP address set
      • Delete IP address family
      • Delete IP address from IP address group
      • Delete IP address set
      • Query IP address family list
      • Query IP address group list
      • Query specified IP address family
      • Query specified IP address group
      • Remove IP address group from IP address family
      • Update IP address family
      • Update IP address set
    • Peering Connections-Related Interfaces
      • Application to process the peering connection
      • Bandwidth resizing for peering connections
      • Create peering connections
      • Disable DNS synchronization for the peering connections.
      • Enable DNS synchronization for the peering connections
      • List of peering connections to be queried.
      • Peering connection renewal
      • Release peering connections
      • Update the local API name and remarks for peering connections
      • Update the peering connection release protection switch
      • View details of peering connection
    • Route Table Related Interfaces
      • Create route rules
      • Delete route rules
      • Primary-standby switch
      • Query route table
      • Query routing rules
      • Update route rules
    • Security Group Related Interfaces
      • Enterprise security group
        • Authorize enterprise security group rules
        • Create enterprise security group
        • Delete enterprise security group rules
        • Delete enterprise security group
        • Query enterprise security group list
        • Update enterprise security group rules
      • Regular security group
        • Authorize regular security group rules
        • Create regular security group
        • Delete regular security group rules
        • Delete regular security group
        • Query regular security group list
        • Revoke regular security group rules
        • Update regular security group rules
        • View security group details
    • Service domain
    • Service Network Interface Card (SNIC)-Related Interfaces
      • Create service network interface card
      • Delete service network interface card
      • Query mountable public services
      • Query service network interface card details
      • Query service network interface card list
      • Update regular security group for service network interface card
      • Update service network interface card with enterprise security group
      • Update the service network interface card
    • Subnet-Related Interfaces
      • Create reserved network segment
      • Create subnet
      • Delete reserved network segment
      • Delete subnet
      • Query specified subnet
      • Query subnet list
      • Query the reserved network segment list
      • Update subnet
    • VPC-Related Interfaces
      • Create VPC
      • Delete VPC
      • Open VPC relay
      • Query IP Usage by Products in VPC
      • Query specified VPC
      • Query VPC intranet IP
      • Query VPC list
      • Shut down VPC relay
      • Update VPC
    • VPN-Related Interfaces
      • Bind EIP
      • Create SSL VPN server
      • Create SSL VPN users in batches
      • Create VPN tunnel
      • Create VPN
      • Delete SSL VPN server
      • Delete SSL VPN user
      • Delete VPN tunnel
      • Query SSL-VPN server
      • Query SSL-VPN user
      • Query VPN details
      • Query VPN List
      • Query VPN tunnels
      • Release VPN
      • Unbind EIP
      • Update SSL VPN server
      • Update SSL VPN user
      • Update VPN release protection switch
      • Update VPN tunnel
      • Update VPN
      • VPN gateway renewal
    • High-Availability Virtual IP Address (HAVIP) Related Interfaces
      • Bind EIP to high-availability virtual IP address
      • Bind instance to high-availability virtual IP address
      • Create high-availability virtual IP address
      • Delete high-availability virtual IP address
      • Query high-availability virtual IP address list
      • Query the specified high-availability virtual IP address
      • Unbind EIP from high-availability virtual IP address
      • Unbind instance from high-availability virtual IP address
      • Update high-availability virtual IP address
  • FAQs
    • Common Questions Overview
    • NAT FAQs
    • Route Table FAQs
    • Service Network Interface Card(SNIC) Common Questions
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    • Service Network Interface Card (SNIC) Common Questions
  • Function Release Records
  • Operation guide
    • Access control
      • ACL
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      • NAT Gateway Instance Diagnosis
    • Network Connection
      • Dedicated gateway
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        • Private Network NAT(Network Address Translation) Gateway
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      • Peering Connections
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        • GRE VPN Gateway
        • IPsec VPN Gateway
        • SSL VPN Gateway
    • Network Diagnostics
      • Flow log
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      • Path analysis
      • Port verification
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  • Product Description
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        • Regular security group
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  • Typical Practices
    • Configure Custom Service and Use Service Network Interface Card(SNIC) to Provide Service for Other VPCs
    • HAVIP Combined with Keepalived to Achieve Master-Backup Multi-Machine High Availability
    • Layer 2 Gateway Combined with Dedicated Line Access ET to Build Large Layer 2 Network Between IDC and Cloud VPC
    • Network Layer Security Description
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    • Security Group Configuration Practice (Advanced Level)
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    • Typical Practice of Managing Elastic Network Interface Using Terraform
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    • Using Keepalived in VPC to Achieve High-Availability Architecture
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    • Windows Using HAVIP to Configure Master-Backup Multi-Machine
    • Configure Custom Service and Use Service Network Interface Card (SNIC) to Provide Service for Other VPCs
  • VPC CLI
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  • Subnet
Table of contents on this page
  • Retrieve Endpoint
  • Retrieve AK/SK
  • Create SubnetClient
  • Create subnet
  • List subnets
  • Query subnet
  • Update subnet
  • Delete subnet

Subnet

Updated at:2025-10-16

Retrieve Endpoint

Before configuring the endpoint for SDK usage, please refer to the developer guide section on VPC Service Domain Name to understand endpoint-related concepts. Baidu AI Cloud currently supports multiple regions. Please refer to the network product VPC section in Region Selection Guide.

Note: Subnet API supports both HTTP and HTTPS calling methods. To enhance data security, it is recommended to call via HTTPS.

Retrieve AK/SK

To use a Baidu AI Cloud subnet, users need a valid Access Key ID (AK) and Secret Access Key (SK) for signature authentication. AK/SK are system-generated strings that identify users and authenticate service access. You can learn how to obtain and understand your AK/SK information by following these steps:

  1. Register a Baidu AI Cloud account
  2. Create AK/SK

Create SubnetClient

SubnetClient serves as the client for subnet services, providing developers with a range of methods to interact with subnet services. When creating a SubnetClient, first configure a BceClientConfiguration-type config instance using endpoint, AK and SK, and then use the config instance to configure the SubnetClient. The specific configuration method is as follows:

Plain Text
1$configs = array(
2    'credentials' => array(
3    'ak' => '',
4    'sk' => '',
5    ),
6    'endpoint' => 'bcc.bj.baidubce.com',  //bj
7);
8$client = new SubnetClient($configs)

Create subnet

The function is defined as follows:

Plain Text
1/**
2 * Create a subnet with the specified options.
3 *
4 * @param string $name
5 *        The name of subnet that will be created.
6 * @param string $zoneName
7 *        the name of available zone which the subnet belong
8 *        through listZones, we can get all available zone info at current region
9 *        ee.g. "cn-gz-a"  "cn-gz-b"
10 * @param string $cidr
11 *        The CIDR of this subnet.
12 * @param string $vpcId
13 *        The id of vpc which this subnet belongs.
14 * @param string $subnetType
15 *        The option param to describe the type of subnet create
16 * @param string $description
17 *        The option param to describe the subnet
18 * @param string $clientToken
19 *        An ASCII string whose length is less than 64.
20 *        The request will be idempotent if clientToken is provided.
21 *        If the clientToken is not specified by the user, a random String generated by default algorithm will be used.
22 * @param array $options
23 * @return mixed
24 */
25public function createSubnet($name, $zoneName, $cidr, $vpcId, $subnetType = null, $description = null,                                  $clientToken = null,  $options = array()) {
26    ......
27}

The parameter description is as follows:

Parameter name Types Whether required Description
name string Yes Subnet name, which cannot be set as "default", must not exceed 65 characters, and may consist of numbers, letters, and underscores
zoneName string Yes Availability zone name
cidr string Yes Subnet cidr
vpcId string Yes ID of VPC to which the subnet belongs
subnetType string No Subnet type, "BCC", "BBC"
description string No Subnet description, not exceeding 200 characters
clientToken string No Idempotence Token, an ASCII string with a length not exceeding 64 bits.
options array No Additional options

Usage examples are as follows:

Plain Text
1// testCreateSubnet
2$subnetName = 'sbn-test'
3$zoneName = 'cn-bj-a'
4$cidr = '192.168.0.0/20'
5$vpcId = ''
6$resp = $client->createSubnet($subnetName, $zoneName, $cidr, $vpcId);
7print_r($resp);

List subnets

The function is defined as follows:

Plain Text
1/**
2 * Return a list of subnets owned by the authenticated user.
3 *
4 * @param string $marker
5 *        The optional parameter marker specified in the original request to specify
6 *        where in the results to begin listing.
7 *        Together with the marker, specifies the list result which listing should begin.
8 *        If the marker is not specified, the list result will listing from the first one.
9 * @param int $maxKeys
10 *        The optional parameter to specifies the max number of list result to return.
11 *        The default value is 1000.
12 * @param string $vpcId
13 *        The id of the vpc
14 * @param string $zoneName
15 *        the name of available zone which the subnet belong
16 *        through listZones, we can get all available zone info at current region
17 *        ee.g. "cn-gz-a"  "cn-gz-b"
18 * @param string $subnetType
19 *        he option param to describe the type of subnet to be created
20 * @param array $options
21 * @return mixed
22 */
23public function listSubnets($marker = null, $maxKeys = null, $vpcId = null, $zoneName = null,
24                            $subnetType = null, $options = array()) {
25    ......
26}

The parameter description is as follows:

Parameter name Types Whether required Description
marker string No The starting position of the batch list query is a system-generated string
maxKeys int No Maximum number of items included per page, maximum: 1,000, default: 1,000
vpcId string No ID of VPC to which the subnet belongs
zoneName string No Availability zone name
subnetType string No Subnet type, "BCC", "BBC"
options array No Additional options

Usage examples are as follows:

Plain Text
1// testListSubnets
2$resp = $client->listSubnets();
3print_r($resp);

Query subnet

The function is defined as follows:

Plain Text
1/**
2 * Get the detail information of a specified subnet.
3 *
4 * @param string $subnetId
5 *        the id of the subnet
6 * @param array $options
7 * @return mixed
8 */
9public function getSubnet($subnetId, $options = array()) {
10    ......
11}

The parameter description is as follows:

Parameter name Types Whether required Description
SubnetId string Yes ID of subnet to be queried
options array No Additional options

Usage examples are as follows:

Plain Text
1// testGetSubnet
2$subnetId = ''
3$resp = $client->getSubnet($subnetId);
4print_r($resp);

Update subnet

The function is defined as follows:

Plain Text
1/**
2 * Modify the special attribute to new value of the subnet owned by the user.
3 *
4 * @param string $subnetId
5 *        The id of the specific subnet to be updated
6 * @param string $name
7 *        The name of the subnet
8 * @param string $description
9 *        The option param to describe the subnet
10 * @param string $clientToken
11 *        An ASCII string whose length is less than 64.
12 *        The request will be idempotent if clientToken is provided.
13 *        If the clientToken is not specified by the user, a random String generated by default algorithm will be used.
14 * @param array $options
15 * @return mixed
16 */
17public function updateSubnet($subnetId, $name, $description = null, $clientToken = null, $options = array()) {
18    ......
19}

The parameter description is as follows:

Parameter name Types Whether required Description
subnetId string Yes ID of subnet to be updated
name string Yes Subnet name, which cannot be set as "default", must not exceed 65 characters, and may consist of numbers, letters, and underscores
description string No Subnet description, not exceeding 200 characters
clientToken string No Idempotence Token, an ASCII string with a length not exceeding 64 bits.
options array No Additional options

Usage examples are as follows:

Plain Text
1// testUpdateSubnet
2$subnetId = ''
3$subnetName = 'sbn-test'
4$description = 'description-test'
5$resp = $client->updateSubnet($subnetId, $subnetName $description);
6print_r($resp);

Delete subnet

The function is defined as follows:

Plain Text
1/**
2 * Delete the specified subnet owned by the user.
3 *
4 * @param string $subnetId
5 *        the id of the subnet to be deleted
6 * @param string $clientToken
7 *        An ASCII string whose length is less than 64.
8 *        The request will be idempotent if clientToken is provided.
9 *        If the clientToken is not specified by the user, a random String generated by default algorithm will be used.
10 * @param array $options
11 * @return mixed
12 */
13public function deleteSubnet($subnetId, $clientToken = null, $options = array()) {
14      ......
15}

The parameter description is as follows:

Parameter name Types Whether required Description
subnetId string Yes ID of subnet to be deleted
clientToken string No Idempotence Token, an ASCII string with a length not exceeding 64 bits.
options array No Additional options

Usage examples are as follows:

Plain Text
1// testDeleteSubnet
2$subnetId = ''
3$resp = $client->deleteSubnet($subnetId);
4print_r($resp);

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