Creates a VSwitch.

Before you begin

Note the following before you call this action:

  • You can create a maximum of 24 VSwitches in a VPC.
  • The first and the last three IP addresses of the VSwitch are reserved by the system. For example, if the CIDR block of a VSwitch is 192.168.1.0/24, IP addresses 192.168.1.0, 192.168.1.253, 192.168.1.254, and 192.168.1.255 are reserved.
  • The number of cloud product instances under the VSwitch cannot exceed the remaining capacity of the VPC (subtract the current number of cloud product instances from 15,000).
  • A cloud product instance can only belong to one VSwitch.
  • VSwitches do not support broadcasting or multicasting.
  • After a VSwitch is created, you cannot modify its CIDR block.

Make the API call

You can use OpenAPI Explorer to make API calls, search for API calls, perform debugging, and generate SDK example code.

Request parameters

Parameter Type Required? Example value Description
Action String Yes CreateVSwitch

The name of this action. Value: CreateVSwitch.

CidrBlock String Yes 172.16.0.0/24

The CIDR block of the VSwitch. The IP address range must meet the following requirements:

  • The length of the subnet mask for the VSwitch must be in the range of /16 to /29.
  • The CIDR block of the VSwitch must belong to the CIDR block of the VPC.
  • The CIDR block of the VSwitch cannot be the same as any destination CIDR block of the VPC route entries, but can be the subnet of a destination CIDR block.
VpcId String Yes vpc-257gqcdfvx6n****

The ID of the VPC to which the VSwitch belongs.

ZoneId String Yes cn-hangzhou-b

The ID of the zone to which the target VSwitch belongs. To query the zone ID, call DescribeZones.

RegionId String Yes cn-hangzhou

The ID of the region to which the target VSwitch belongs. To query the region ID, call DescribeRegions.

Ipv6CidrBlock Integer No 12

The last 8 bits of the IPv6 CIDR block of the VSwitch. Value range: 0~255.

Description String No This is my vswitch.

The description of the VSwitch.

The description must be 2 to 256 characters in length. It must start with a letter and cannot start with http:// or https://.

VSwitchName String No VSwitch-1

The name of the VSwitch.

The name must be 2 to 256 characters in length. It must start with a letter and cannot start with http:// or https://.

ClientToken String No 0c593ea1-3bea-11e9-b96b-88e9fe637760

The client token that guarantees the idempotence of the request. The value of this parameter is generated by the client and is unique among different requests. The ClientToken can contain only ASCII characters, and cannot exceed 64 characters in length. For more information, see How to ensure idempotence.

OwnerAccount String No ****abc@Alibaba.com

The logon account of the RAM user.

Response parameters

Parameter Type Example value Description
VSwitchId String vsw-25navfgbue4g****

The ID of the created VSwitch.
RequestId String 861E6630-AEC0-4B2D-B214-6CB5E44B7F04

The ID of the request.

Examples

Request example


http(s)://vpc.aliyuncs.com/? Action=CreateVSwitch
&CidrBlock=172.16.0.0/24
&VpcId=vpc-257gqcdfvx6n****
&ZoneId=cn-hangzhou-b
&<CommonParameters>

Response example

XML format 

<CreateVSwitchResponse>
      <RequestId>0ED8D006-F706-4D23-88ED-E11ED28DCAC0</RequestId>
      <VSwitchId>vsw-25naue4cdvf****</VSwitchId>
</CreateVSwitchResponse>

JSON format 

{
	"RequestId":"0ED8D006-F706-4D23-88ED-E11ED28DCAC0",
	"VSwitchId":"vsw-25naue4cdvf****"
}

Errors

HTTP status code Error code Error message Description
404 InvalidZoneId.NotFound Specified zone does not exist. The zone ID is invalid.
404 InvalidVpcId.NotFound Specified VPC does not exist. The specified VPC does not exist.
400 InvalidVSwitchName.Malformed Specified virtual router name is not valid. The format of the VSwitch name is invalid.
400 InvalidVSwitchDiscription.Malformed Specified virtual switch description is not valid. The VSwitch description is invalid.
400 ResourceNotAvailable Resource you requested is not available in this region or zone. VSwitches are not supported in the specified region or zone.
400 InvalidParameter Specified CIDR block is not valid in VPC. The specified CIDR block does not belong to the CIDR block of the VPC.
400 InvalidCidrBlock.Overlapped Specified CIDR block overlapped with other subnets. The specified CIDR block overlaps the CIDR block of another VSwitch or the destination CIDR block of an existing custom route entry. Select a CIDR block that is not used.
400 InvalidCidrBlock.Overlapped Specified CIDR block overlapped with other entry. The specified CIDR block overlaps the CIDR block of another VSwitch or the destination CIDR block of an existing custom route entry. Select a CIDR block that is not used.
400 QuotaExceeded.VSwitch Virtual switch quota exceeded. The number of VSwitches has reached the quota.
400 IncorrectRouteEntryStatus Some route entry status blocked this operation. This operation cannot be processed because one or more route entries in the current route table are in the pending or modifying state.
400 IncorrectVSwitchStatus Some virtual switch is modifying within the same VPC. Multiple VSwitches in the modifying state exist in the same VPC.
400 InvalidCirdrBlock.MaskLength Specified CIDR block is not valid . The format of the specified CIDR block is invalid.
400 IncorrectVpcStatus Current VPC status does not support this operation. The current status of the VPC does not support the action.
400 InvalidCidrBlock.Malformed Specified CIDR block is not valid. The format of the specified CIDR block is invalid.
400 MissingParameter Miss mandatory parameter. One or more required parameters are missing.
400 IncorrectVSwitchStatus VSwitch Creation simultaneously is not supported. One VSwitch in the Creating state exists in the VPC. VSwitch creation failed.
400 Forbidden.VpcNotFound Specified VPC can not found. The specified VPC does not exist.

For a list of error codes, visit the API Error Center.