Change the instance subnet
Updated at：2025-10-20
Change the subnet to which the instance belongs.
- Changing the subnet while the instance is running will trigger a reboot; changing it while the instance is stopped will not trigger a reboot.
- Subnet changes are only supported within the same AZ. You can specify either a standard or enterprise security group for the change.
Request structure
Plain Text
1PUT /v{version}/subnet/changeSubnet HTTP/1.1
2Host: bcc.bj.baidubce.com
3Authorization: authorization string
4{
5 "instanceId": instanceId,
6 "subnetId": subnetId,
7 "internalIp": internalIp,
8 "securityGroupIds": [securityGroupId],
9 "enterpriseSecurityGroupIds": [enterpriseSecurityGroupId]
10}Request headers
There are no special headers required beyond the common headers.
Request parameters
| Parameter name | Types | Whether required | Parameter location | Description |
|---|---|---|---|---|
| version | String | Yes | URL parameter | API version number |
| instanceId | String | Yes | RequestBody | Virtual machine instance ID |
| subnetId | String | Yes | RequestBody | Changed subnet ID |
| internalIp | String | No | RequestBody | Specify the intranet IP; if not specified, it will be randomly generated |
| securityGroupIds | List | No | RequestBody | Change the regular security group, effective when changing subnets across VPCs. It cannot be modified simultaneously with enterprise security groups |
| enterpriseSecurityGroupIds | List | No | RequestBody | Change the enterprise security group, effective when changing subnets across VPCs. It cannot be modified simultaneously with security groups. |
Response headers
No special headers are required beyond the standard ones.
Response parameters
No special response parameters are available.
Request example
Plain Text
1PUT /v2/subnet/changeSubnet HTTP/1.1
2Host: bcc.bj.baidubce.com
3Authorization: bce-auth-v1/f81d3b34e48048fbb2634dc7882d7e21/2015-08-11T04:17:29Z/3600/host/74c506f68c65e26c633bfa104c863fffac5190fdec1ec24b7c03eb5d67d2e1de
4{
5 "instanceId": "i-3823SVMR",
6 "subnetId": "sbn-c82119xnk59i",
7 "internalIp": "192.168.1.18",
8 "securityGroupIds": ["g-dt6xvzpcp93m"],
9 "enterpriseSecurityGroupIds": ["esg-kbnx8vg85ity"]
10}Response example
Plain Text
1HTTP/1.1 200 OK
2x-bce-request-id: 1214cca7-4ad5-451d-9215-71cb844c0a50
3Date: Wed, 03 Dec 2014 06:42:19 GMT
4Content-Type: application/json;charset=UTF-8
5Server: BWS