Help Center/Enterprise Router/User Guide/Associations/Association Overview
Updated on 2026-01-28 GMT+08:00
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Association Overview

Each attachment can be associated with one route table for:
  • Packet forwarding: Packets from the attachment are forwarded through the routes specified in the associated route table.
  • Route propagation: The routes in the associated route tables are automatically propagated to the route table of the attachment.
Figure 1 Associations
Table 1 Associations

Attachment Type

Route Learning

Way to Create Association

Description

VPC

Not supported

  • Auto creation: If Default Route Table Association is enabled and the default association route table is specified, attachments are automatically associated with the default association route table.
  • Manual creation: You can select a route table and create an association in it to associate an attachment with the route table. For details, see Creating an Association for an Attachment in a Route Table.

Each attachment can only be associated with one route table. Associations between attachments in Figure 1 are described as follows:

  • Auto creation: Associations are automatically created to associate attachments, such as virtual gateway 1, VPC 1, and VPN gateway 1, with the default route table of the enterprise router.
  • Manual creation: You need to manually create associations in the custom route table of the enterprise router for attachments, such as VPC 2, VPN gateway 2, and virtual gateway 2.

Virtual gateway

Supported

VPN gateway

Supported

Peering connection

Supported

Global DC gateway

Supported

Parent topic:Associations