# DescribeCacheSubnetGroups
<a name="API_DescribeCacheSubnetGroups"></a>

Returns a list of cache subnet group descriptions. If a subnet group name is specified, the list contains only the description of that group. This is applicable only when you have ElastiCache in VPC setup. All ElastiCache clusters now launch in VPC by default. 

## Request Parameters
<a name="API_DescribeCacheSubnetGroups_RequestParameters"></a>

 For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

 ** CacheSubnetGroupName **   
The name of the cache subnet group to return details for.  
Type: String  
Required: No

 ** Marker **   
An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by `MaxRecords`.  
Type: String  
Required: No

 ** MaxRecords **   
The maximum number of records to include in the response. If more records exist than the specified `MaxRecords` value, a marker is included in the response so that the remaining results can be retrieved.  
Default: 100  
Constraints: minimum 20; maximum 100.  
Type: Integer  
Required: No

## Response Elements
<a name="API_DescribeCacheSubnetGroups_ResponseElements"></a>

The following elements are returned by the service.

 **CacheSubnetGroups.CacheSubnetGroup.N**   
A list of cache subnet groups. Each element in the list contains detailed information about one group.  
Type: Array of [CacheSubnetGroup](API_CacheSubnetGroup.md) objects

 ** Marker **   
Provides an identifier to allow retrieval of paginated results.  
Type: String

## Errors
<a name="API_DescribeCacheSubnetGroups_Errors"></a>

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** CacheSubnetGroupNotFoundFault **   
The requested cache subnet group name does not refer to an existing cache subnet group.  
HTTP Status Code: 400

## Examples
<a name="API_DescribeCacheSubnetGroups_Examples"></a>

### DescribeCacheSubnetGroups
<a name="API_DescribeCacheSubnetGroups_Example_1"></a>

Some of the output has been omitted for brevity.

#### Sample Request
<a name="API_DescribeCacheSubnetGroups_Example_1_Request"></a>

```
https://elasticache.amazonaws.com/
   ?Action=DescribeCacheSubnetGroups
   &Version=2015-02-02
   &SignatureVersion=4
   &SignatureMethod=HmacSHA256
   &Timestamp=20150202T192317Z
   &X-Amz-Credential=<credential>
```

#### Sample Response
<a name="API_DescribeCacheSubnetGroups_Example_1_Response"></a>

```
<DescribeCacheSubnetGroupsResponse xmlns="http://elasticache.amazonaws.com/doc/2015-02-02/">
        <DescribeCacheSubnetGroupsResult>
            <CacheSubnetGroups>
                <CacheSubnetGroup>
                    <VpcId>990524496922</VpcId>
                    <CacheSubnetGroupDescription>description</CacheSubnetGroupDescription>
                    <CacheSubnetGroupName>subnet_grp1</CacheSubnetGroupName>
                    <Subnets>
                        <Subnet>
                            <SubnetStatus>Active</SubnetStatus>
                            <SubnetIdentifier>subnet-7c5b4115</SubnetIdentifier>
                            <SubnetAvailabilityZone>
                                <Name>us-west-2c</Name>
                            </SubnetAvailabilityZone>
                        </Subnet>
                        <Subnet>
                            <SubnetStatus>Active</SubnetStatus>
                            <SubnetIdentifier>subnet-7b5b4112</SubnetIdentifier>
                            <SubnetAvailabilityZone>
                                <Name>us-west-2b</Name>
                            </SubnetAvailabilityZone>
                        </Subnet>
                        <Subnet>
                            <SubnetStatus>Active</SubnetStatus>
                            <SubnetIdentifier>subnet-3ea6bd57</SubnetIdentifier>
                            <SubnetAvailabilityZone>
                                <Name>us-west-2c</Name>
                            </SubnetAvailabilityZone>
                        </Subnet>
                    </Subnets>
                </CacheSubnetGroup>
                
 (...output omitted...)
      
            </CacheSubnetGroups>
        </DescribeCacheSubnetGroupsResult>
        <ResponseMetadata>
            <RequestId>31d0faee-229b-11e1-81f1-df3a2a803dad</RequestId>
        </ResponseMetadata>
    </DescribeCacheSubnetGroupsResponse>
```

## See Also
<a name="API_DescribeCacheSubnetGroups_SeeAlso"></a>

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/elasticache-2015-02-02/DescribeCacheSubnetGroups) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/elasticache-2015-02-02/DescribeCacheSubnetGroups) 
+  [Amazon SDK for C\+\+](https://docs.amazonaws.cn/goto/SdkForCpp/elasticache-2015-02-02/DescribeCacheSubnetGroups) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/elasticache-2015-02-02/DescribeCacheSubnetGroups) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/elasticache-2015-02-02/DescribeCacheSubnetGroups) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/elasticache-2015-02-02/DescribeCacheSubnetGroups) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/elasticache-2015-02-02/DescribeCacheSubnetGroups) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/elasticache-2015-02-02/DescribeCacheSubnetGroups) 
+  [Amazon SDK for Python](https://docs.amazonaws.cn/goto/boto3/elasticache-2015-02-02/DescribeCacheSubnetGroups) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/elasticache-2015-02-02/DescribeCacheSubnetGroups)