Queries detailed information about Cloud Enterprise Network (CEN) instances within the current Alibaba Cloud account.


OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes DescribeCens

The operation that you want to perform. Set the value to DescribeCens.

PageNumber Integer No 1

The number of the page to return. Default value: 1.

PageSize Integer No 10

The number of entries to return on each page. Valid values: 1 to 50. Default value: 10.

Filter.N.Key String No CenId

The filter condition. Valid values:

  • CenId: the ID of a CEN instance.
  • Name: the name of a CEN instance.

By default, the logical operator among filter conditions is AND. Information about a CEN instance is returned only if the CEN instance matches all filter conditions.

You can specify at most five filter conditions in each call.

Filter.N.Value.N String No cen-44m0p68spvlrqq****

The value of the filter condition.

This parameter sets the value of a filter key. You can specify multiple values for a filter key. The logical operator among multiple filter values is OR. If a CEN instance matches one or more of the values that you specify, the CEN instance matches the filter condition.

You can specify at most five values in each filter condition.

Tag.N.Key String No tagtest

The tag keys of the resources.

The tag keys cannot be an empty string. The tag keys cannot exceed 64 characters in length, and cannot start with http:// or https://.

You can specify at most 20 tag keys in each call.

Tag.N.Value String No tagtest

The tag values of the resources.

The tag values can be 0 to 128 characters in length, and cannot start with http:// or https://.

Each tag key has a unique tag value. You can specify at most 20 tag values in each call.

Response parameters

Parameter Type Example Description
PageSize Integer 10

The number of entries returned per page.

RequestId String 2BFA6822-240E-4E27-B4C8-AA400EF7474D

The ID of the request.

PageNumber Integer 1

The number of the page returned.

TotalCount Integer 1

The total number of entries returned.

Cens Array of Cen

The information about the CEN instance.

Status String Active

The status of the CEN instance.

  • Creating: The CEN instance is being created.
  • Active: The CEN instance is running.
  • Deleting: The CEN instance is being deleted.
CreationTime String 2019-10-22T07:44Z

The time when the CEN instance was created.

The time follows the ISO8601 standard in the YYYY-MM-DDThh:mmZ format. The time is displayed in UTC.

Ipv6Level String DISABLED

Indicates whether IPv6 is enabled for the CEN instance.

  • ENABLE: enabled
  • DISABLED: disabled
Description String desctest

The description of the CEN instance.

ResourceGroupId String rg-acfm3unpnuw****

The ID of the resource group to which the CEN instance belongs.

CenId String cen-0xyeagctz5sfg9****

The ID of the CEN instance.

ProtectionLevel String REDUCED

The level of CIDR block overlapping.

REDUCED: Overlapped CIDR blocks are allowed. This value specifies that CIDR blocks can overlap but CIDR blocks cannot be duplicates.

Name String nametest

The name of the CEN instance.

Tags Array of Tag

The IDs of the tags that are added to the CEN instance.

Key String tagtest

The tag key.

Value String tagtest

The tag value.

CenBandwidthPackageIds Array of String cenbwp-4c2zaavbvh5f42****

The IDs of the bandwidth plans that are associated with the CEN instance.


Sample requests

&<Common request parameters>

Sample responses

XML format

HTTP/1.1 200 OK


JSON format

HTTP/1.1 200 OK

  "TotalCount" : 1,
  "RequestId" : "2BFA6822-240E-4E27-B4C8-AA400EF7474D",
  "PageSize" : 10,
  "PageNumber" : 1,
  "Cens" : {
    "Cen" : [ {
      "Status" : "Active",
      "ProtectionLevel" : "REDUCED",
      "ResourceGroupId" : "rg-acfm3unpnuw****",
      "Ipv6Level" : "DISABLED",
      "CenId" : "cen-0xyeagctz5sfg9****",
      "CreationTime" : "2019-10-22T07:44Z",
      "CenBandwidthPackageIds" : {
        "CenBandwidthPackageId" : [ ]
      "Name" : "nametest"
    } ]

Error code

HttpCode Error code Error message Description
400 InvalidTagKey The tag keys are not valid. The error message returned because the tag key is invalid.

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