Call CreateVpnRouteEntry to create a destination-based route - VPN Gateway - Alibaba Cloud - VPN Gateway

Creates a destination route for a VPN gateway. After the destination route is created, the VPN gateway matches the destination route based on the destination IP address of the traffic and forwards the traffic based on the matched destination route.

Operation description

Before you begin

Before you create a destination route, make sure that you have created an IPsec-VPN connection. For more information, see CreateVpnConnection.
Before you create a destination route, we recommend that you understand the matching rules of destination routes. For more information, see Configure destination routes.

Limits

0.0.0.0/0 is not supported as the destination CIDR block of a destination route.
For a single-tunnel VPN gateway, a CIDR block that overlaps with 100.64.0.0/10 (including the CIDR block itself, its subnets, and its supernet) is not supported as the destination CIDR block of a destination route.
The CreateVpnRouteEntry operation is asynchronous. The system returns the configuration information of the destination route, but the destination route is not yet created. The creation task is still running in the background. You can call the DescribeVpnGateway operation to query the creation status of the destination route:
- If the VPN gateway is in the updating state, the destination route is being created.
- If the VPN gateway is in the active state, the destination route is created.
The CreateVpnRouteEntry operation does not support concurrent creation of destination routes under the same VPN gateway.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

vpc:CreateVpnRouteEntry

create

*VpnGateway

acs:vpc:{#regionId}:{#accountId}:vpngateway/{#VpnGatewayId}

None

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID of the VPN gateway. You can call the DescribeRegions operation to query the region ID.	cn-hangzhou
ClientToken	string	No	The client token that is used to ensure the idempotence of the request. You can use the client to generate the value, but you must make sure that the value is unique among different requests. The client token can contain only ASCII characters. Note If you do not specify this parameter, the system automatically uses the RequestId of the API request as the ClientToken. The RequestId of each API request is unique.	d7d24a21-f4ba-4454-9173-b3828dae****
VpnGatewayId	string	Yes	The instance ID of the VPN gateway.	vpn-bp1a3kqjiiq9legfx****
RouteDest	string	Yes	The destination CIDR block of the destination route.	10.0.0.0/24
NextHop	string	Yes	The next hop of the destination route.	vco-bp15oes1py4i66rmd****
Weight	integer	Yes	The weight of the destination route. In scenarios where you use the same VPN gateway instance to establish active/standby IPsec-VPN connections, you can specify the active/standby links by configuring the weight of the destination route. A destination route with a weight of 100 is the active link by default, and a destination route with a weight of 0 is the standby link by default. You can configure health checks for the IPsec-VPN connection to automatically detect the connectivity of the links. If the active link is disconnected, the system automatically switches traffic to the standby link to ensure high availability of the cloud access link. For more information, see CreateVpnConnection. Valid values: 100: The IPsec-VPN connection associated with the destination route is the active link. 0: The IPsec-VPN connection associated with the destination route is the standby link. Note When you specify active/standby links, the active and standby destination routes must have the same destination CIDR block, different next hops, and different weights. For a VPN gateway instance that supports dual-tunnel pattern IPsec-VPN connections, you do not need to configure this parameter. A dual-tunnel pattern IPsec-VPN connection contains two tunnels that automatically form active/standby links. You do not need to specify active/standby links by configuring this parameter. If you configure this parameter, the parameter settings do not take effect.	0
PublishVpc	boolean	Yes	Specifies whether to publish the destination route to the VPC. Valid values: true: Publishes the destination route to the VPC. The system publishes the route only to the system route table of the VPC, but not to the custom route table of the VPC. If you want the custom route table of the VPC to include this route, you must manually add it. For more information, see CreateRouteEntry. false: Does not publish the destination route to the VPC. You must manually add a destination route whose next hop points to the VPN gateway in both the system route table and the custom route table of the VPC. Otherwise, the VPC cannot access resources in the CIDR block through the IPsec-VPN connection.	true
Description	string	No	The description of the destination route. The description must be 1 to 100 characters in length, and cannot start with `http://` or `https://`.	mytest
OverlayMode	string	No	The tunnel protocol. Set the value to Ipsec (IPsec tunnel protocol).	Ipsec
DryRun	boolean	No	Specifies whether to only precheck the request. Valid values: true: Prechecks the request without creating the route. The system checks whether the required parameters are specified, the request format is valid, and the service limits are met. If the request fails the precheck, the corresponding error is returned. If the request passes the precheck, the `DryRunOperation` error code is returned. false (default): Sends the request. If the request passes the precheck, the HTTP 2xx status code is returned and the operation is performed.	false

Response elements

Element	Type	Description	Example
	object	The returned result.
NextHop	string	The next hop of the destination route.	vco-bp15oes1py4i66rmd****
Weight	integer	The weight of the destination route. Valid values: 100: The destination route has a higher priority. 0: The destination route has a lower priority.	0
RouteDest	string	The destination CIDR block of the destination route.	10.0.0.0/24
RequestId	string	The ID of the request.	5BE01CD7-5A50-472D-AC14-CA181C5C03BE
Description	string	The description of the destination route.	mytest
State	string	The publish status of the destination route. Valid values: published: The destination route is published to the route table of the VPC. normal: The destination route is not published to the route table of the VPC.	published
CreateTime	integer	The timestamp when the destination route was created. Unit: milliseconds. The timestamp is in the UNIX format, which represents the total duration from 00:00:00 on January 1, 1970 (UTC) to the time when the destination route was created.	1492747187000
OverlayMode	string	The tunnel protocol. Set the value to Ipsec (IPsec tunnel protocol).	Ipsec
VpnInstanceId	string	The instance ID of the VPN gateway.	vpn-bp1a3kqjiiq9legfx****

Examples

Success response

JSON format

{
  "NextHop": "vco-bp15oes1py4i66rmd****",
  "Weight": 0,
  "RouteDest": "10.0.0.0/24",
  "RequestId": "5BE01CD7-5A50-472D-AC14-CA181C5C03BE",
  "Description": "mytest",
  "State": "published",
  "CreateTime": 1492747187000,
  "OverlayMode": "Ipsec",
  "VpnInstanceId": "vpn-bp1a3kqjiiq9legfx****"
}

Error codes

HTTP status code	Error code	Error message	Description
400	Resource.QuotaFull	The quota of resource is full
400	VpnGateway.Configuring	The specified service is configuring.
400	VpnGateway.FinancialLocked	The specified service is financial locked.
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	VpnRouteEntry.ConflictSSL	The specified route entry has conflict with SSL client.	The route conflicts with the SSL client.
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	InvalidNextHop.NotFound	The specified NextHop does not exist.	The specified next hop does not exist.
400	IllegalParam.RouteDest	The specified RouteDest is invalid	The destination address is invalid.
400	OperationFailed.RouteConflict	Operation failed because there is already a route in VPC route table to another VPN on the same network block.	Operation failed because there is already a route in VPC route table to another VPN on the same network block.
400	OperationFailed.InvalidCidrBlock	Operation failed because the specified network block is invalid.	The CIDR block is invalid.
400	QuotaExceeded.VpnRouteEntry	The number of route entries to the VPN gateway in the VPC routing table has reached the quota limit.	The number of route entries to the VPN gateway in the VPC routing table has reached the quota limit.
400	TaskConflict	The operation is too frequent, please wait a moment and try again.	Your requests are too frequent. Try again later.
400	VpnTask.CONFLICT	Vpn task has conflict.	The VPN operation conflicts. Try again later.
400	IncorrectVpcStatus	Current VPC status does not support this operation.
400	InternalError	The request processing has failed due to some unknown error, exception or failure.
400	InvalidCidrBlock.Malformed	Specified CIDR block is not valid.
400	DryRunOperation	Request validation has been passed with DryRun flag set.	The request passed the dry run.
400	CreatePbrRoutesQuotaFull.QuotaFull	The number of policy routes exceeds the quota limit.	The number of policy routes exceeds the quota limit.
400	CreateDbrRoutesQuotaFull.QuotaFull	The number of created destination routes exceeds the quota limit.	The number of created destination routes exceeds the quota limit.
403	Forbbiden.SubUser	User not authorized to operate on the specified resource as your account is created by another user.
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	InvalidVpnGatewayInstanceId.NotFound	The specified vpn gateway instance id does not exist.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.