Enterprise Edition transit routers support custom route tables. After you create a custom route table, you can create associated forwarding correlations, route learning correlations, or custom routes in the route table. This helps you manage traffic in a more flexible manner.

Background information

Each Enterprise Edition transit router has one system route table and supports custom route tables. Each Basic Edition transit router has one system route table and does not support custom route tables. For more information about how to check the edition of a transit router, see View the edition of a transit router.

The system route table of an Enterprise Edition transit router is isolated from its custom route tables. The following content describes the system route table and custom route tables:
  • The system automatically creates the system route table. When you create an Enterprise Edition transit router, the system automatically creates a system route table.
  • You can manually create custom route tables. Custom route tables are similar to virtual routing and forwarding (VRF) used by traditional routers. A custom route table is isolated from the system route table and other custom route tables.

    After you create a network instance connection, you can associate the network instance connection to a custom route table by creating an associated forwarding correlation. After you create an associated forwarding correlation, the transit router forwards the traffic of the network instance connection based on the custom route table.

Create a custom route table

  1. Log on to CEN console.
  2. On the Instances page, find the CEN instance that you want to manage and click its ID.
  3. On the Basic Information > Transit Router tab, find the transit router in the target region and click the ID of the target transit router.
  4. On the details page of the transit router instance, click the Transit Router Route Table tab.
  5. In the left-side section, click Create Route Table. In the Create Route Table dialog box, set the following parameters and click OK.
    Parameter Description
    Transit Router Select the transit router to which the route table belongs.
    Name Enter a name for the route table.

    The name must be 0 to 128 characters in length. letters, digits, commas (,), periods (.), semicolons (;), forward slashes (/), at signs (@), underscores (_), and hyphens (-)..

    Description Enter the description of the route table.

    The description must be 2 to 256 characters in length. letters, digits, commas (,), periods (.), semicolons (;), forward slashes (/), at signs (@), underscores (_), and hyphens (-)..

View the route tables of an Enterprise Edition transit router

  1. Log on to CEN console.
  2. On the Instances page, find the CEN instance that you want to manage and click its ID.
  3. On the Basic Information > Transit Router tab, find the transit router in the target region and click the ID of the target transit router.
  4. On the details page of the transit router instance, click the Transit Router Route Table tab.
  5. In the left-side section, click the route table ID.
  6. On the route table details page, you can view the following information:

View the route tables of a Basic Edition transit router

  1. Log on to CEN console.
  2. On the Instances page, find the CEN instance that you want to manage and click its ID.
  3. On the Basic Information > Transit Router tab, find the transit router in the target region and click the ID of the target transit router.
  4. On the details page of the transit router, click the Route Table tab to view the following information:

Delete a custom route table

You can delete a custom route table that is no longer needed. You cannot delete the system route table.

Before you delete a custom route table, make sure that the following requirements are met:
  1. Log on to CEN console.
  2. On the Instances page, find the CEN instance that you want to manage and click its ID.
  3. On the Basic Information > Transit Router tab, find the transit router in the target region and click the ID of the target transit router.
  4. On the details page of the transit router instance, click the Transit Router Route Table tab.
  5. In the left-side section, click the route table ID.
  6. In the Route Table Details section, click Delete.
  7. In the Delete Route Table message, click OK.

References