Updated on 2024-06-13 GMT+08:00

Associating a Route Table with a Subnet


After a subnet is created, the system associates the subnet with the default route table of its VPC. If you want to use specific routes for a subnet, you can associate the subnet with a custom route table.

The custom route table associated with a subnet affects only the outbound traffic. The default route table determines the inbound traffic.

After a route table is associated with a subnet, the routes in the route table control the routing for the subnet and apply to all cloud resources in the subnet.

Notes and Constraints

  • A subnet must have a route table associated and can only be associated with one route table.
  • A route table can be associated with multiple subnets.


  1. Log in to the management console.
  1. Click in the upper left corner and select the desired region and project.
  2. Click in the upper left corner and choose Networking > Virtual Private Cloud.

    The Virtual Private Cloud page is displayed.

  3. In the navigation pane on the left, choose Virtual Private Cloud > Route Tables.

    The route table list is displayed.

  4. In the route table list, locate the row that contains the target route table and click Associate Subnet in the Operation column.
  5. Select the subnet to be associated.
  6. Click OK.