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Smart Access Gateway:ModifySagExpressConnectInterface

Last Updated:Jul 31, 2025

Modifies the sub-interface information of an Express Connect circuit port.

Debugging

You can run this interface directly in OpenAPI Explorer, saving you the trouble of calculating signatures. After running successfully, OpenAPI Explorer can automatically generate SDK code samples.

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

  • Operation: the value that you can use in the Action element to specify the operation on a resource.
  • Access level: the access level of each operation. The levels are read, write, and list.
  • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
    • For mandatory resource types, indicate with a prefix of * .
    • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
  • Condition Key: the condition key that is defined by the cloud service.
  • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
OperationAccess levelResource typeCondition keyAssociated operation
smartag:ModifySagExpressConnectInterfaceupdate
*All Resources
*
    none
none

Request parameters

ParameterTypeRequiredDescriptionExample
RegionIdstringYes

The ID of the region where the Smart Access Gateway (SAG) instance is deployed.

You can call the DescribeRegions operation to query the most recent region list.

cn-shanghai
SmartAGIdstringYes

The ID of the SAG instance.

sag-whfn****
SmartAGSnstringYes

The serial number of the SAG device associated with the SAG instance.

sag32a30****
PortNamestringYes

The name of the Express Connect port.

5
VlanstringYes

The VLAN ID of the subinterface.

Valid values: 0 to 4094.

Note
  • If the VLAN ID is 0, this port is a physical port and does not support VLAN subinterfaces.
  • If the VLAN ID is 1 to 4094, this port supports VLAN subinterfaces based on the Layer 3 protocols.
10
IPstringYes

The IP address.

192.XX.XX.1
MaskstringYes

The subnet mask of the IP address.

255.255.255.252

Response parameters

ParameterTypeDescriptionExample
object
RequestIdstring

The ID of the request.

AFF7E5A6-6897-4FDC-A5A8-1978B5B3E545

Examples

Sample success responses

JSONformat

{
  "RequestId": "AFF7E5A6-6897-4FDC-A5A8-1978B5B3E545"
}

Error codes

HTTP status codeError codeError messageDescription
400Sag.EccVlanNotExistThe specified dedicated VLAN does not exist.The specified VLAN does not exist.

For a list of error codes, visit the Service error codes.