Connect ECR to Transit Router for Same-Account & Cross-Account Scenarios - Cloud Enterprise Network - Alibaba Cloud - Cloud Enterprise Network

Creates a connection between an Express Connect Router (ECR) instance and a transit router instance in the same region.

Operation description

Only Enterprise Edition transit routers support ECR connections.
You can create an ECR connection on an Enterprise Edition transit router in the following ways:
- If you have already created an Enterprise Edition transit router instance in the target region, you can create an ECR connection by specifying EcrId, RegionId, and TransitRouterId.
- If you do not have an Enterprise Edition transit router instance in the target region, you can create an ECR connection by specifying EcrId, CenId, and RegionId. The system performs automatic creation of an Enterprise Edition transit router instance when the ECR connection is created.
The CreateTransitRouterEcrAttachment operation is asynchronous. After you send a request, the system returns an ECR connection ID but the ECR connection is not yet created. The creation node continues to run in the background. You can invoke the ListTransitRouterEcrAttachments operation to query the status of the ECR connection.
- If the ECR connection is in the Attaching state, the ECR connection is being created. In this state, you can only execute query operations on the ECR connection but cannot execute other operations.
- If the ECR connection is in the Attached state, the ECR connection is created.
After an ECR connection is created, the ECR connection by default does not have a routing learning relationship or an associated forwarding relationship with any Enterprise Edition transit router route table.

After a routing learning relationship is established between the ECR connection and an Enterprise Edition transit router route table, the system automatically propagates the routes of the ECR instance to the Enterprise Edition transit router route table.
After an ECR connection is created, the system automatically propagates the routes in the Enterprise Edition transit router route table associated with the ECR connection to the route table of the ECR instance.

Before you begin

The Alibaba Cloud account that owns the Enterprise Edition transit router and the Alibaba Cloud account that owns the ECR instance belong to the same enterprise.
Enterprise Edition transit routers support connections to ECR instances that belong to the same account or a different account. Before you create a cross-account ECR connection, obtain authorization from the cross-account ECR instance. For more information, see Cross-account authorization for network instances.
Before you invoke this operation to create an ECR connection, invoke the CreateExpressConnectRouterAssociation operation to associate the ECR instance with the Enterprise Edition transit router instance.

When you invoke the DeleteTransitRouterEcrAttachment operation to force delete an ECR connection, the system also deletes the association between the ECR instance and the Enterprise Edition transit router instance. You do not need to delete the association separately.

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Test

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

cen:CreateTransitRouterEcrAttachment

create

*CenInstance

acs:cen:*:{#accountId}:ceninstance/{#ceninstanceId}

TransitRouter

acs:cen:*:{#accountId}:centransitrouter/{#TransitRouterId}

None

Request parameters

Parameter	Type	Required	Description	Example
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 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 may be different for each API request.	02fb3da4-130e-11e9-8e44-001****
CenId	string	No	The Cloud Enterprise Network (CEN) instance ID.	cen-7qthudw0ll6jmc****
TransitRouterId	string	No	The transit router instance ID.	tr-bp1su1ytdxtataupl****
RegionId	string	No	The region ID of the transit router instance. You can call the DescribeChildInstanceRegions operation to query region IDs.	eu-central-1
TransitRouterAttachmentName	string	No	The name of the ECR connection. The name can be empty or 1 to 128 characters in length and cannot start with http:// or https://.	nametest
TransitRouterAttachmentDescription	string	No	The description of the ECR connection. The description can be empty or 1 to 256 characters in length and cannot start with http:// or https://.	testdesc
EcrId	string	Yes	The ID of the Express Connect Router (ECR) instance to associate.	ecr-upyc0viial107r****
EcrOwnerId	integer	No	The Alibaba Cloud account ID of the account that owns the ECR instance. The default value is the Alibaba Cloud account ID of the current logon account. Note This parameter is required if you want to load a cross-account network instance.	1250123456123456
DryRun	boolean	No	Specifies whether to perform a dry run. Valid values: true: performs a dry run. The system checks the required parameters, request syntax, and business restrictions. If the check fails, the corresponding error is returned. If the check succeeds, the `DryRunOperation` error code is returned. false (default): performs a dry run and sends the request.	false
Tag	array<object>	No	The tag information list. You can specify up to 20 tags at a time.
	object	No
Key	string	No	The tag key of the resource. The tag key cannot be an empty string. It can be up to 64 characters in length and cannot start with `aliyun` or `acs:`. It cannot contain `http://` or `https://`. You can specify up to 20 tag keys at a time.	tagtest
Value	string	No	The tag value of the resource. The tag value can be an empty string or up to 128 characters in length. It cannot start with `aliyun` or `acs:`. It cannot contain `http://` or `https://`. Each tag key corresponds to one tag value. You can specify up to 20 tag values at a time.	tagtest

Response elements

Element	Type	Description	Example
	object
TransitRouterAttachmentId	string	The ID of the ECR connection.	tr-attach-qieks13jnt1cchy***
RequestId	string	The request ID.	C0245BEF-52AC-44A8-A776-EF96FD26A5CA

Examples

Success response

JSON format

{
  "TransitRouterAttachmentId": "tr-attach-qieks13jnt1cchy***",
  "RequestId": "C0245BEF-52AC-44A8-A776-EF96FD26A5CA"
}

Error codes

HTTP status code	Error code	Error message	Description
400	NoPermission.AliyunServiceRolePolicyForCEN	You are not authorized to create the service linked role. Role Name: AliyunServiceRolePolicyForCEN. Service Name: cen.aliyuncs.com. Make sure that the user has been granted the ram:CreateServiceLinkedRole permission.	The error message returned because you do not have the permissions to create the service-linked role whose role name is AliyunServiceRolePolicyForCEN and service name is cen.aliyuncs.com. You must acquire the ram:CreateServiceLinkedRole permission before you can create the service-linked role.
400	OperationUnsupported.TransitRouterRegionId	The specified TransitRouterRegion does not support the operation.
400	InvalidCenId.NotFound	CenId is not found.	The error message returned because the specified CEN instance does not exist.
400	InvalidStatus.ResourceStatus	The resource is not in a valid state for the attachment operation.	The error message returned because the status of the specified resource does not support this operation. Try again later.
400	InvalidTransitRouterId.NotFound	TransitRouterId is not found.	The error message returned because the ID of the transit router does not exist.
400	Forbbiden.TransitRouterServiceNotOpen	The user has not open transit router service.	The error message returned because the transit router is disabled. Enable the transit router and try again.
400	OperationUnsupported.TransitRouterType	The specified TransitRouterType does not support the operation.	The error message returned because this operation is not supported by the specified type of transit router.
400	MissingParam.CenIdOrRegionId	Either CenId or RegionId must be specified.	The error message returned because the CenId or RegionId parameter is not set.
400	IllegalParam.AssociateRouteTableId	The specified AssociateRouteTableId is illegal.	The error message returned because the specified route table ID (AssociateRouteTableId) is invalid.
400	Forbbiden.AttachChildInstanceAcrossBid	Operation is invalid, please apply for cross-bid attaching.
400	IllegalParam.RegionId	RegionId is illegal.	The error message returned because the specified region is invalid.
400	OperationUnsupported.CenFullLevel	CEN full level does not support TransitRouter	The error message returned because CEN instances of the Full type do not support Enterprise Edition transit routers.
400	InvalidOperation.CenInstanceStatus	The CEN instance is not in a valid state for the operation.
400	IncorrectStatus.TransitRouter	The status of TransitRouter is incorrect.	The error message returned because the status of the transit router does not support this operation. Try again later.
400	QuotaFull.ChildInstanceRelatedCen	The childinstance has exceed the quota of the times that a childinstance can be attached as an attachment.	The error message returned because the number of CEN instances to which the instance is attached has reached the upper limit. You cannot attach the instance to more CEN instances.
400	Forbidden.ResourceOwnerTransitRouterServiceNotOpen	The resource owner user has not opened transit router service.	The transit router service for the resource owner's account is not currently opened. Please inform them to open the transit router service and then try again.
400	OperationUnsupported.BandwidthType	The specified BandwidthType does not support the operation.	The error message returned because this operation is not supported by the specified bandwidth type.
400	IllegalParam.BandwidthType	BandwidthType is illegal.	The error message returned because the specified bandwidth plan type is invalid.
400	IncorrectStatus.EcrResource	The ECR resource is not in a valid state for the attachment operation.	The ECR resource is not in a valid state for the attachment operation.
400	QuotaExceeded.CenQuotaEcrAttachPerTransitRouter	The maximum number of ECR attachment per Transit Router is exceeded.	The maximum number of ECR attachment per Transit Router is exceeded.
400	OperationUnsupported.ECRAttachment	ECR Attachment is not supported.	ECR Attachment is not supported.
400	InvalidTransitRouterMode.NeedUpgrade	TransitRouter need to upgrade.	The error message returned because the specified transit router mode is not supported.
400	ResourceNotFound	The resource does not found.	The resource does not found.
400	Forbidden.ResourceOwnerTransitRouterServiceExpired	The transit router service of the account to which the resource belongs has been suspended due to arrears. Please notify the other party to renew the service and try again.	The transit router service of the account to which the resource belongs has been suspended. Please notify the other party to renew the service and try again.
400	Forbidden.TransitRouterServiceExpired	The transit router service is out of service.	The transit router service has been suspended due for payment. Please renew the service and try again.
400	Forbbiden.AttachAcrossBidEcr	Attach cross bid ECR is unsupported. Please submit a ticket.	Attach cross bid ECR is unsupported. Please submit a ticket.
400	InvalidParameter	Invalid parameter.	The error message returned because the parameter is set to an invalid value.
400	Unauthorized	The AccessKeyId is unauthorized.	The error message returned because you do not have the permissions to perform this operation.
400	InvalidParameter.ResourceType	The specified parameter ResourceType is invalid.
400	SystemBusy	The system is busy. Please try again later.	The error message returned because the system is unavailable. Try again later.
400	OperationDenied.AttachmentInCurrentRegionExisted	The current operation is rejected. The Express Connect Router instance can only associate one Transit Router in the same region.
400	InvalidParameter.TagValue	The specified parameter TagValue is invalid.	The input parameter Tag Value is invalid.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.