Update Subnet

Verb	URI	Description
PUT	/subnets/`subnet-id`	Updates the specified subnet.

Normal Response Code: Ok (200)

Error Response Codes: Bad Request (400), Unauthorized (401), Forbidden (403), Not Found (404)

This operation updates the specified subnet. Some attributes, such as IP version (ip_version), CIDR (cidr), and IP allocation pools (allocation_pools) cannot be updated. Attempting to update these attributes results in a 400 Bad Request error.

This operation requires a request body.

This operation returns a response body.

	Note
	Update operations in OpenStack Networking adopt patch semantics. This implies that the Networking API v2.0 does not require you to send the whole resource to be updated, but just the attributes that you wish to update, as shown in the following example.

Example 4.23. Update Subnet: JSON Request

PUT /v2.0/subnets/9436e561-47bf-436a-b1f1-fe23a926e031
Content-Type: application/json
Accept: application/json

{
   "subnet":{
      "gateway_ip":"10.0.3.254",
      "name":"new_name"
   }
}

Example 4.24. Update Subnet: JSON Response

status: 200
content-length: 381
content-type: application/json

{
    "subnet": {
        "allocation_pools": [
            {
                "end": "10.0.3.254",
                "start": "10.0.3.2"
            }
        ],
        "cidr": "10.0.3.0/24",
        "dns_nameservers": [],
        "enable_dhcp": true,
        "gateway_ip": "10.0.3.1",
        "host_routes": [],
        "id": "91e47a57-7508-46fe-afc9-fc454e8580e1",
        "ip_version": 4,
        "name": "sample_subnet",
        "network_id": "1a6f6006-9e0b-4f99-984c-96787ae66363",
        "tenant_id": "f667b69e4d6749749ef3bcba7251d9ce"
    }
}

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