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Transit Router
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Transit Router
Transit Router
Document
Best Practices
Network isolation across network planes
Interconnection and isolation across network planes
Service insertion within an isolated network plane (same region)
Service insertion between interconnected network planes (same region)
What's new
New feature release notes
Product Overview
What is Transit Router
Features
Benefits
Application scenarios
Limits
Related cloud services
Areas and regions
Product Billing
Billing overview
Billing notes
Arrears
Expiration
Taxes
Getting Started
Quick start
Implementing private interconnectivity and isolation between different VPCs (same account, same region)
Implementing private interconnectivity and isolation between different VPCs (same account, cross-region)
Implementing private interconnectivity and isolation between different VPCs (cross-account, same region)
Implementing private interconnectivity and isolation between different VPCs (cross-account, cross-region)
User Guide
TR instances
Creating a Transit Router instance
Intra-region attachment
Creating a VPC attachment
Creating a VPN attachment
Creating a DC Gateway attachment
Editing attachment point for a VPC attachment
Enabling or disabling IPv6
Deleting an intra-region attachment
Configuring a fee payer
Deleting a Transit Router instance
Instance sharing
Cross-account Management overview
Cross-account Transit Router sharing
Accepting a cross-account peering attachment
Rejecting a cross-account peering attachment
Inter-region management
Bandwidth Package
Cross-border Service overview
Creating a bandwidth package
Modifying bandwidth for a package bandwidth
Deleting a bandwidth package
Inter-region attachment
Creating an inter-region attachment
Adding to or removing from bandwidth package
Modifying bandwidth for an inter-region attachment
Cross-region traffic analysis
Deleting an inter-region attachment
Route tables
Route Table overview
Route configuration planning
Creating a route table
Managing association forwarding
Managing a static route
Managing route learning
Enabling or disabling auto publishing
Route policy
Route Policy overview
Creating a route policy
Managing a route policy entry
Configuring route policy for a TR route table
Deleting a route policy
Forward policy
Forwarding Policy overview
Creating a forwarding policy
Managing a forwarding policy entry
Configuring forwarding policy for a network instance attachment
Deleting a forwarding policy
Viewing route table details
Deleting a custom route table
QoS management
QoS overview
Traffic qos marking policy
Creating a traffic marking policy
Managing a traffic marking entry
Configure traffic marking policy for an inter-region attachment
Deleting a traffic marking policy
Traffic qos queue policy
Creating a traffic queue policy
Managing a queue
Configuring traffic queue policy for an inter-region attachment
Deleting a traffic queue policy
Multicast
Multicast overview
Creating a multicast domain
Associating or disassociating subnet for a multicast domain
Managing a multicast source
Managing a multicast member
Deleting a multicast domain
Flow logs
Flow Log overview
Creating a flow log
Searching and analyzing a flow log
Starting or stoping a flow log
Deleting a flow log
Monitoring
Viewing monitoring data
Configuring an alarm strategy
IAM
IAM overview
Transit Router IAM policy types
Transit Router custom policy examples
Projects and Tags
Project management
Tag management
Best Practices
Best practice overview
Implementing interconnectivity and isolation between specified VPCs
Implementing secure mutual access between different VPCs
Implementing interconnectivity between independent VPCs and a data center (same account, cross-region)
Implementing interconnectivity between independent VPCs and a data center (cross-account, same region)
Implementing interconnectivity between independent VPCs and a data center (cross-account, cross-region)
Optimizing paths for different subnets within a VPC to reach an on-premises data center via Direct Connects
Restricting communication between VPCs or between a VPC and an on-premises data center by route policies
Summarizing specific routes in VPCs or on-premises data centers by a Transit Router
Migrating intercommunication between cloud and on-premise services from a CEN to a TR
API reference
API release notes
Overview
Call methods
Request Structure
Common Parameters
Signature Method
Return structure
Common error codes
API overview
TR instances
CreateTransitRouter - Creating a TR instance
DeleteTransitRouter - Deleting a Transit Router instance
DescribeTransitRouterAttachments - Querying the attachment list
DescribeTransitRouters - Querying the list of TR instances
ModifyTransitRouterAttributes - Modifying a TR instance
VPC attachment
CreateTransitRouterVpcAttachment - Creating a VPC attachment
DeleteTransitRouterVpcAttachment - Deleting a VPC attachment
DescribeTransitRouterVpcAttachments - Querying the list of VPC attachments
ModifyTransitRouterVpcAttachmentAttributes - Modifying a VPC attachment
VPN attachment
CreateTransitRouterVpnAttachment - Creating a VPN attachment
DeleteTransitRouterVpnAttachment - Delete VPN attachment
DescribeTransitRouterVpnAttachments - Querying the list of VPN attachments
ModifyTransitRouterVpnAttachmentAttributes - Modifying a VPN attachment
DC gateway attachment
CreateTransitRouterDirectConnectGatewayAttachment - Creating a DC Gateway attachment
DeleteTransitRouterDirectConnectGatewayAttachment - Deleting a Direct Connect Gateway attachment
DescribeTransitRouterDirectConnectGatewayAttachments - Querying the list of DC Gateway attachments
ModifyTransitRouterDirectConnectGatewayAttachmentAttributes - Modifying a DC Gateway attachment
Local peer attachment
CreateTransitRouterLocalPeerAttachment - Creating a local peer attachment
AcceptTransitRouterLocalPeerAttachment - Accepting a cross-account local peer attachment
RejectTransitRouterLocalPeerAttachment - Rejecting a cross-account local peer attachment
DeleteTransitRouterLocalPeerAttachment - Deleting a local peer attachment
DescribeTransitRouterLocalPeerAttachments - Querying the list of local peer attachments.
ModifyTransitRouterLocalPeerAttachmentAttributes - Modifying a local peer attachment
Inter-region attachment
CreateTransitRouterPeerAttachment - Creating an inter-region attachment
DeleteTransitRouterPeerAttachment - Deleting an inter-region attachment
DescribeTransitRouterPeerAttachments - Listing inter-region attachments
ModifyTransitRouterPeerAttachmentAttributes - Modifying basic information for a specified inter-region attachment
AcceptTransitRouterPeerAttachment - Accepting a cross-account inter-region attachment
RejectTransitRouterPeerAttachment - Rejecting a cross-account inter-region attachment
Bandwidth Packages
CreateTransitRouterBandwidthPackage - Creating a TR bandwidth package
DeleteTransitRouterBandwidthPackage - Deleting a Transit Router (TR) bandwidth package.
ModifyTransitRouterBandwidthPackageAttributes - Modifying a TR bandwidth package
DescribeTransitRouterBandwidthPackages - Querying the list of TR bandwidth packages
DescribeTransitRouterRegions - Querying the TR region information
DescribeTransitRouterBandwidthPackagesBilling - Querying the list of TR bandwidth package metering methods
SetTransitRouterBandwidthPackageRenewal - Configuring renewal type for a TR bandwidth package
RenewTransitRouterBandwidthPackage - Renewing a TR bandwidth package
Route tables
CreateTransitRouterRouteTable - Creating a custom route table
DeleteTransitRouterRouteTable - delete custom route table
DescribeTransitRouterRouteTables - Listing TR route tables
ModifyTransitRouterRouteTableAttributes - Modifying a TR route table
Route entry
CreateTransitRouterRouteEntry - Adding a static route to a TR route table
DeleteTransitRouterRouteEntry - Deleting a static route entry.
DescribeTransitRouterRouteEntries - Querying the list of route entries
ModifyTransitRouterRouteEntryAttributes - Modifying a route
Association forwarding
AssociateTransitRouterAttachmentToRouteTable - Associating a TR route table with a network instance attachment
DescribeTransitRouterRouteTableAssociations - Querying the association forwarding list
DissociateTransitRouterAttachmentFromRouteTable - Disassociating a route table from a network instance attachment.
ModifyTransitRouterRouteTableAssociationAttributes - Modify the route table associated with a network instance attachment.
Route learning
EnableTransitRouterRouteTablePropagation - Creating route learning
DescribeTransitRouterRouteTablePropagations - Querying a route learning list
DisableTransitRouterRouteTablePropagation - delete route learning
Route policy
CreateTransitRouterRoutePolicyTable - Creating a route policy
DeleteTransitRouterRoutePolicyTable - Delete route policy
DescribeTransitRouterRoutePolicyTables - Querying the list of route policies
ModifyTransitRouterRoutePolicyTableAttributes - Modifying a route policy
CreateTransitRouterRoutePolicyEntry - Adding a policy entry to a route policy.
DeleteTransitRouterRoutePolicyEntry - Delete route policy entry
DescribeTransitRouterRoutePolicyEntries - Querying the list of route policy entries
ModifyTransitRouterRoutePolicyEntryAttributes - Modifying a route policy entry
AssociateTransitRouterRoutePolicyToRouteTable - Associating a route policy with a TR route table
ModifyTransitRouterRoutePolicyAssociation - Modify the TR route table attached to the route policy
DissociateTransitRouterRoutePolicyFromRouteTable - Disassociating a route policy from a TR route table
Forwarding policy
CreateTransitRouterForwardPolicyTable - Create a forwarding policy
DeleteTransitRouterForwardPolicyTable - Deleting a forwarding policy
DescribeTransitRouterForwardPolicyTables - Querying the list of forwarding policies
ModifyTransitRouterForwardPolicyTableAttributes - Modifying a forwarding policy
CreateTransitRouterForwardPolicyEntry - Adding a forwarding policy entry
DeleteTransitRouterForwardPolicyEntry - Deleting a forwarding policy entry.
DescribeTransitRouterForwardPolicyEntries - Querying the list of forwarding policy entries
ModifyTransitRouterForwardPolicyEntryAttributes - Modifying a forwarding policy entry
AssociateTransitRouterForwardPolicyTableToAttachment - associating a forwarding policy with a network instance attachment or an inter-region peering attachment
ModifyTransitRouterForwardPolicyTableAssociation - Modifying a forwarding policy associated with a network instance attachment or an inter-region attachment
DissociateTransitRouterForwardPolicyTableFromAttachment - Disassociating a forwarding policy from a network instance attachment or an inter-region attachment
Traffic qos marking policy
CreateTransitRouterTrafficQosMarkingPolicy - Creating a traffic marking policy
DeleteTransitRouterTrafficQosMarkingPolicy - Deleting a traffic marking policy
ModifyTransitRouterTrafficQosMarkingPolicyAttributes - Modifying a traffic marking policy
DescribeTransitRouterTrafficQosMarkingPolicies - Querying the list of traffic marking policies
CreateTransitRouterTrafficQosMarkingEntry - Adding a traffic marking entry
DeleteTransitRouterTrafficQosMarkingEntry - Deleting a traffic marking entry
DescribeTransitRouterTrafficQosMarkingEntries - Querying the list of traffic marking entries
AssociateTransitRouterTrafficQosMarkingPolicyToAttachment - Associating a traffic marking policy with an attachment
DissociateTransitRouterTrafficQosMarkingPolicyFromAttachment - Dissociating a traffic marking policy from an attachment
ModifyTransitRouterTrafficQosMarkingPolicyAssociation - Modifying a traffic marking policy associated with an attachment
Traffic qos queue policy
CreateTransitRouterTrafficQosQueuePolicy - Creating a traffic queue policy
DeleteTransitRouterTrafficQosQueuePolicy - Deleting traffic queue policy
ModifyTransitRouterTrafficQosQueuePolicyAttributes - Modifying a traffic queue policy
DescribeTransitRouterTrafficQosQueuePolicies - Querying the list of traffic queue policies
CreateTransitRouterTrafficQosQueueEntry - Adding a traffic queue
ModifyTransitRouterTrafficQosQueueEntryAttributes - Modifying a traffic queue
DeleteTransitRouterTrafficQosQueueEntry - Deleting a traffic queue
DescribeTransitRouterTrafficQosQueueEntries - Querying the list of traffic queues
AssociateTransitRouterTrafficQosQueuePolicyToAttachment - Associating a traffic queue policy with an attachment
DissociateTransitRouterTrafficQosQueuePolicyFromAttachment - Disassociating a traffic queue policy from an attachment
ModifyTransitRouterTrafficQosQueuePolicyAssociation - Modifying a traffic queue policy associated with an attachment
Flow logs
CreateTransitRouterFlowLog - Creating a TR flow log instance
DescribeTransitRouterFlowLogs - Querying the list of flow logs
ModifyTransitRouterFlowLogAttributes - Updating attributes of a specified flow log
StartTransitRouterFlowLog - Enabling flow log collection
StopTransitRouterFlowLog - Disabling flow log collection
DeleteTransitRouterFlowLog - Deleting a flow log
Multicast
CreateTransitRouterMulticastDomain - Creating a multicast domain
ModifyTransitRouterMulticastDomainAttributes - Modifying a multicast domain
DeleteTransitRouterMulticastDomain - Delete Multicast Domain
DescribeTransitRouterMulticastDomains - Querying the list of multicast domains
DescribeTransitRouterMulticastDomainAssociations - Querying multicast domain association
AssociateTransitRouterMulticastDomain - Attaching multicast domain to subnet
DissociateTransitRouterMulticastDomain - Detach multicast domain subnet
DescribeTransitRouterMulticastGroups - Query multicast group list
CreateTransitRouterMulticastGroupSource - Adding a multicast source
DeleteTransitRouterMulticastGroupSource - Delete multicast source
CreateTransitRouterMulticastGroupMember - Adding a multicast member
DeleteTransitRouterMulticastGroupMember - delete multicast group member
Tags
TagResources - Adding a custom tag to a resource
UntagResources - Deleting a custom tag from a resource
ListTagsForResources - Querying the information of qualified tags
SDK reference
Transit Router SDK overview
Viewing an SDK sample code
FAQ
Transit Router FAQs
Route FAQs
Cross-border FAQs
Flow Log FAQs
Documentation
Transit Router
User Guide
Flow logs
Flow Log overview
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Flow logs
Flow Log overview
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Flow Log overview
Last updated: 2026.09.01 11:37:15