CreateVpnAttachment - Virtual Private Cloud - Alibaba Cloud Documentation Center

Creates an IPsec-VPN connection. After you create the IPsec-VPN connection, you can associate the IPsec-VPN connection with a transit router.

Operation description

By default, an IPsec-VPN connection created by calling the CreateVpnAttachment operation is not associated with a resource. You can associate an IPsec-VPN connection with a transit router by calling the CreateTransitRouterVpnAttachment operation.

Prerequisites

Before you create an IPsec-VPN connection, make sure that you created a customer gateway in the region where you want to create the IPsec-VPN connection. For more information, see CreateCustomerGateway .

If you want to add BGP configurations to an IPsec-VPN connection, make sure that an autonomous system number (ASN) is assigned to the customer gateway.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Debug

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:
- The required resource types are displayed in bold characters.
- 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.

Operation	Access level	Resource type	Condition key	Associated operation
vpc:CreateVpnAttachment	create	All Resources *	none	none

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID of the IPsec-VPN connection. You can call the DescribeRegions operation to query the most recent region list.	cn-hangzhou
Name	string	No	The name of the IPsec-VPN connection. The name must be 1 to 100 characters in length and cannot start with `http://` or `https://`.	nametest
CustomerGatewayId	string	Yes	The ID of the customer gateway.	cgw-p0w2jemrcj5u61un8****
NetworkType	string	No	The network type of the IPsec-VPN connection. Valid values: public (default) private	public
LocalSubnet	string	Yes	The CIDR block on the VPC side. The CIDR block is used in Phase 2 negotiations. Separate multiple CIDR blocks with commas (,). Example: 192.168.1.0/24,192.168.2.0/24. The following routing modes are supported: If you set LocalSubnet and RemoteSubnet to 0.0.0.0/0, the routing mode of the IPsec-VPN connection is set to Destination Routing Mode. If you set LocalSubnet and RemoteSubnet to specific CIDR blocks, the routing mode of the IPsec-VPN connection is set to Protected Data Flows.	10.1.1.0/24,10.1.2.0/24
RemoteSubnet	string	Yes	The CIDR block on the data center side. This CIDR block is used in Phase 2 negotiations. Separate multiple CIDR blocks with commas (,). Example: 192.168.3.0/24,192.168.4.0/24. The following routing modes are supported: If you set LocalSubnet and RemoteSubnet to 0.0.0.0/0, the routing mode of the IPsec-VPN connection is set to Destination Routing Mode. If you set LocalSubnet and RemoteSubnet to specific CIDR blocks, the routing mode of the IPsec-VPN connection is set to Protected Data Flows.	10.1.3.0/24,10.1.4.0/24
EffectImmediately	boolean	No	Specifies whether to immediately start IPsec negotiations after the configuration takes effect. Valid values: true: immediately starts IPsec negotiations after the configuration is complete. false (default): starts IPsec negotiations when inbound traffic is received.	false
IkeConfig	string	No	The configurations of Phase 1 negotiations: IkeConfig.Psk: The pre-shared key that is used for authentication between the VPN gateway and the data center. It must be 1 to 100 characters in length, and can contain letters, digits, and the following characters: ~!`@#$%^&()_-+={}[]\|;:',.<>/? If you do not specify a pre-shared key, the system generates a random 16-character string as the pre-shared key. You can call the DescribeVpnConnection operation to query the pre-shared key that is generated by the system. Note* The pre-shared key of the IPsec-VPN connection must be the same as the authentication key of the data center. Otherwise, a connection cannot be established between the data center and the VPN gateway. IkeConfig.IkeVersion: the IKE version. Valid values: ikev1 and ikev2. Default value: ikev1. IkeConfig.IkeMode: the negotiation mode. Valid values: main and aggressive. Default value: main. IkeConfig.IkeEncAlg: the encryption algorithm that is used in Phase 1 negotiations. Valid values: aes, aes192, aes256, des, and 3des. Default value: aes. IkeConfig.IkeAuthAlg: the authentication algorithm that is used in Phase 1 negotiations. Valid values: md5, sha1, sha256, sha384, and sha512. Default value: md5. IkeConfig.IkePfs: the Diffie-Hellman key exchange algorithm that is used in Phase 1 negotiations. Valid values: group1, group2, group5, and group14. Default value: group2. IkeConfig.IkeLifetime: the SA lifetime determined by Phase 1 negotiations. Unit: seconds. Valid values: 0 to 86400. Default value: 86400. IkeConfig.LocalId: the identifier on the Alibaba Cloud side. The identifier cannot exceed 100 characters in length. This parameter is empty by default. IkeConfig.RemoteId: the identifier on the data center side. The identifier cannot exceed 100 characters in length. The default value is the IP address of the customer gateway.	{"Psk":"1234****","IkeVersion":"ikev1","IkeMode":"main","IkeEncAlg":"aes","IkeAuthAlg":"sha1","IkePfs":"group2","IkeLifetime":86400,"LocalId":"47.XX.XX.1","RemoteId":"47.XX.XX.2"}
IpsecConfig	string	No	The configurations of Phase 2 negotiations: IpsecConfig.IpsecEncAlg: the encryption algorithm that is used in Phase 2 negotiations. Valid values: aes, aes192, aes256, des, and 3des. Default value: aes. IpsecConfig. IpsecAuthAlg: the authentication algorithm that is used in Phase 2 negotiations. Valid values: md5, sha1, sha256, sha384, and sha512. Default value: md5. IpsecConfig. IpsecPfs: the Diffie-Hellman key exchange algorithm that is used in Phase 2 negotiations. Valid values: disabled, group1, group2, group5, and group14. Default value: group2. IpsecConfig. IpsecLifetime: the SA lifetime that is determined by Phase 2 negotiations. Unit: seconds. Valid values: 0 to 86400. Default value: 86400.	{"IpsecEncAlg":"aes","IpsecAuthAlg":"sha1","IpsecPfs":"group2","IpsecLifetime":86400}
BgpConfig	string	No	The Border Gateway Protocol (BGP) configurations: BgpConfig.EnableBgp: specifies whether to enable BGP. Valid values: true and false. Default value: false. BgpConfig.LocalAsn: the ASN on the Alibaba Cloud side. Valid values: 1 to 4294967295. Default value: 45104. You can enter the ASN in two segments. Separate the first 16 bits of the ASN from the remaining 16 bits with a period (.). Enter the number in each segment in decimal format. For example, if you enter 123.456, the ASN is: 123 × 65536 + 456 = 8061384. BgpConfig.TunnelCidr: the CIDR block of the IPsec tunnel. The CIDR block falls within 169.254.0.0/16. The subnet mask of the CIDR block must be 30 bits in length. LocalBgpIp: the BGP IP address on the Alibaba Cloud side. This IP address must fall within the CIDR block range of the IPsec tunnel. Note Before you configure BGP, we recommend that you learn about how BGP works and the limits. For more information, see BGP dynamic routing . We recommend that you use a private ASN to establish a connection with Alibaba Cloud over BGP. Refer to the relevant documentation for the private ASN range.	{"EnableBgp":"true","LocalAsn":"45104","TunnelCidr":"169.254.11.0/30","LocalBgpIp":"169.254.11.1"}
HealthCheckConfig	string	No	The health check configuration: HealthCheckConfig.enable: specifies whether to enable health checks. Valid values: true and false. Default value: false. HealthCheckConfig.dip: the destination IP address configured for health checks. Enter the IP address on the data center side that the VPC can communicate with through the IPsec-VPN connection. HealthCheckConfig.sip: the source IP address configured for health checks. Enter the IP address on the VPC side that the data center can communicate with through the IPsec-VPN connection. HealthCheckConfig.interval: the time interval of health check retries. Unit: seconds. Default value: 3. HealthCheckConfig.retry: the maximum number of health check retries. Default value: 3. HealthCheckConfig.Policy: specifies whether to withdraw published routes when health checks fail. Valid values: revoke_route (default): withdraws published routes. reserve_route: does not withdraw published routes.	{"enable":"true","dip":"192.168.1.1","sip":"10.1.1.1","interval":"3","retry":"3","Policy": "revoke_route"}
AutoConfigRoute	boolean	No	Specifies whether to automatically configure routes. Valid values: true (default) false	true
EnableDpd	boolean	No	Specifies whether to enable the dead peer detection (DPD) feature. Valid values: true (default) The initiator of the IPsec-VPN connection sends DPD packets to verify the existence and availability of the peer. If no response is received from the peer within a specified period of time, the connection fails. ISAKMP SAs and IPsec SAs are deleted. The IPsec tunnel is also deleted. false	true
EnableNatTraversal	boolean	No	Specifies whether to enable NAT traversal. Valid values: true (default) After NAT traversal is enabled, the initiator does not check the UDP ports during IKE negotiations and can automatically discover NAT gateway devices along the VPN tunnel. false	true
RemoteCaCert	string	No	The peer CA certificate when a ShangMi (SM) VPN gateway is used to create the IPsec-VPN connection.	-----BEGIN CERTIFICATE----- MIIB7zCCAZW**** -----END CERTIFICATE-----
ClientToken	string	No	The client token that is used to ensure the idempotence of the request. You can use the client to generate the token, but you must make sure that the token is unique among different requests. The token can contain only ASCII characters. Note If you do not specify this parameter, the system automatically uses the request ID as the client token. The request ID may be different for each request.	123e4567-e89b-12d3-a456-4266****
Tags	array<object>	No	The tag value. The tag value can be an empty string and cannot exceed 128 characters in length. It cannot start with `aliyun` or `acs:`, and cannot contain `http://` or `https://`. Each tag key corresponds to one tag value. You can specify up to 20 tag values in each call.
	object	No
Key	string	No	The tag key. The tag key cannot be an empty string. It can be at most 64 characters in length, and cannot contain `http://` or `https://`. It cannot start with `aliyun` or `acs:`. You can specify at most 20 tag keys in each call.	TagKey
Value	string	No	The tag value. The tag value can be an empty string and cannot exceed 128 characters in length. It cannot start with `aliyun` or `acs:`, and cannot contain `http://` or `https://`. Each tag key corresponds to one tag value. You can specify at most 20 tag values in each call.	TagValue
ResourceGroupId	string	No	The ID of the resource group to which the IPsec-VPN connection belongs. You can call the ListResourceGroups operation to query resource group IDs. If you do not specify a resource group ID, the IPsec-VPN connection belongs to the default resource group.	rg-acfmzs372yg****

Response parameters

Parameter	Type	Description	Example
	object	The returned data.
RequestId	string	The request ID.	88187252-0E26-3C4D-9D1D-32A04454EBBA
VpnConnectionId	string	The ID of the IPsec-VPN connection.	vco-p0wb09rama8qwwgfn****
Name	string	The name of the IPsec-VPN connection.	nametest
CreateTime	long	The timestamp generated when the IPsec-VPN connection was established. Unit: milliseconds. This value is a UNIX timestamp representing the number of milliseconds that have elapsed since the epoch time January 1, 1970, 00:00:00 UTC.	1658201810000
Code	string	The status code returned by the current operation. 200 indicates that the operation is successful.	200
Success	boolean	Indicates whether the current operation is successful. true false	true
Message	string	The information returned by the current operation.	successful

Examples

Sample success responses

JSONformat

{
  "RequestId": "88187252-0E26-3C4D-9D1D-32A04454EBBA",
  "VpnConnectionId": "vco-p0wb09rama8qwwgfn****",
  "Name": "nametest",
  "CreateTime": 1658201810000,
  "Code": "200",
  "Success": true,
  "Message": "successful"
}

Error codes

HTTP status code	Error code	Error message	Description
400	VpnRouteEntry.AlreadyExists	The specified route entry is already exist.	The route already exists.
400	VpnRouteEntry.Conflict	The specified route entry has conflict.	Route conflicts exist.
400	NotSupportVpnConnectionParameter.IpsecPfs	The specified vpn connection ipsec Ipsec Pfs is not support.	The PFS parameter set for the IPsec-VPN connection is not supported.
400	NotSupportVpnConnectionParameter.IpsecAuthAlg	The specified vpn connection ipsec Auth Alg is not support.	The authentication algorithm specified for the IPsec-VPN connection is not supported.
400	VpnRouteEntry.BackupRoute	Validate backup route entry failed.	Active/standby routes failed authentication.
400	VpnRouteEntry.InvalidWeight	Invalid route entry weight value.	The weight specified for the route is invalid.
400	InvalidParameter.VpnConnectionName	The specified vpn connection name is invalid.	The VPN connection name does not meet the requirements.
400	QuotaExceeded.PolicyBasedRoute	The maximum number of policy-based routes is exceeded. Existing routes: %s. Routes to be created: %s. Maximum routes: %s.	The quota of policy-based routes is reached. Existing routes: %s. Routes to be created: %s. Quota: %s.
400	MissingParameter.TunnelCidr	The parameter TunnelCidr is mandatory when BGP is enabled.	You must specify the tunnel CIDR block when you enable BGP.
400	MissingParam.CustomerGatewayAsn	Asn of customer gateway is mandatory when BGP is enabled.	The ASN of the customer gateway cannot be empty when you enable BGP.
400	IllegalParam.LocalAsn	The specified LocalAsn is invalid.	The local ASN is invalid.
400	InvalidParameter.BgpConfig	The specified BgpConfig is invalid.	The error message returned because the BGP configuration is invalid.
400	IllegalParam.TunnelCidr	The specified TunnelCidr is invalid.	The TunnelCidr parameter is set to an invalid value.
400	InvalidLocalBgpIp.Malformed	The specified LocalBgpIp is malformed.	The local BGP IP address is in an abnormal state.
400	IllegalParam.LocalSubnet	The specified "LocalSubnet" (%s) is invalid.	The specified "LocalSubnet" (%s) is invalid.
400	IllegalParam.RemoteSubnet	The specified "RemoteSubnet" (%s) is invalid.	The specified "RemoteSubnet" (%s) is invalid.
400	IllegalParam.LocalBgpIp	The specified LocalBgpIp is invalid.	The local BGP IP address is invalid.
400	OperationFailed.MissCertificate	The VPN connecton has not associated any certificates.	The error message returned because the VPN gateway is not associated with a certificate.
400	MissingParam.RemoteId	The remote ID is mandatory when creating national standard VPN connection.	The error message returned because the peer ID is not specified. You must specify the peer ID when you create a VPN connection encrypted by SM.
400	IllegalParam.EnableBgp	VPN connection must enable BGP when VPN gateway has enabled BGP.	The error message returned because the VPN connection must use BGP if BGP is enabled for the VPN gateway.
400	Forbidden.TagKey.Duplicated	The specified tag key already exists.	The tag resources are duplicate.
400	SizeLimitExceeded.TagNum	The maximum number of tags is exceeded.	The number of tags has reached the upper limit.
400	InvalidParameter.TagValue	The specified parameter TagValue is invalid.	The error message returned because the specified tag value is invalid.
400	InvalidParameter.TagKey	The specified parameter TagKey is invalid.	The error message returned because the specified tag key is invalid.
400	Duplicated.TagKey	The specified parameter TagKey is duplicated.	The error message returned because the specified tag key already exists.
400	InternalError	The request processing has failed due to some unknown error, exception or failure.	An internal error occurred.
400	InvalidTunnelCidr.Malformed	The specified TunnelCidr is malformed.	The specified tunnel CIDR block is invalid.
400	OperationFailed.NoAvailableAmount	The available amount of your account is less than 0, please recharge before attempting to purchase.	Your account balance is negative. Top up your account before you can make a purchase.
400	OperationUnsupported.EnableBgp	Current region does not support enable BGP.	The error message returned because the current region does not support BGP.
403	Forbbiden.SubUser	User not authorized to operate on the specified resource as your account is created by another user.	You are unauthorized to perform this operation on the specified resource. Acquire the required permissions and try again.
403	Forbidden	User not authorized to operate on the specified resource.	You do not have the permissions to manage the specified resource. Apply for the permissions and try again.
404	InvalidCustomerGatewayInstanceId.NotFound	The specified customer gateway instance id does not exist.	The specified customer gateway does not exist. Check whether the ID of the customer gateway is correct.

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

Change history

Change time	Summary of changes	Operation
2024-05-10	The Error code has changed	View Change Details
2023-10-19	API Description Update. The Error code has changed. The request parameters of the API has changed	View Change Details
2023-08-09	API Description Update. The Error code has changed	View Change Details