Function Overview

An enterprise router connects virtual private clouds (VPCs) and on-premises networks to build a central hub network. It has high specifications, provides high bandwidth, and delivers high performance. Enterprise routers use the Border Gateway Protocol (BGP) to learn, dynamically select, or switch between routes, thereby ensuring the service continuity and significantly improving network scalability and O&M efficiency.

A variety of network instances can be attached to an enterprise router as its attachments.

Route tables are used by enterprise routers to forward packets. Route tables contain associations, propagations, and routes.

An enterprise router can have multiple route tables. You can associate attachments with different route tables to enable communication or isolation between network instances.

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.

You can create an association in the following ways:

Manually: Select a route table and create an association for an attachment in the route table.

Automatically: You just need to enable Default Route Table Association and specify the default route table. The system automatically creates an association for an attachment in the default route table.

You can create a propagation for each attachment to propagate routes to one or more route tables on an enterprise router.

If you do not need a propagation, you can manually add static routes for attachments to the route tables.

You can create a propagation in the following ways:

Manually: Select a route table and create a propagation for an attachment in the route table.

Automatically: You just need to enable Default Route Table Propagation and specify the default route table. A propagation is automatically created for an attachment in the default propagation route table.

Routes are used to forward packets. A route contains information such as the destination, next hop, and route type.

You can create a propagation for attachments to automatically propagate routes to route tables or manually add static routes to route tables.

You can share an enterprise router in your account with other accounts.

You are the owner of the enterprise router.

Other accounts are the users of the enterprise router.

After you share your enterprise router with other accounts, these other users can attach their network instances to your enterprise router, so that their network instances can access your enterprise router.

This allows VPCs in the same region but different accounts to be attached to the same enterprise router.

Enterprise Router can work with Log Tank Service (LTS) to capture traffic of attachments on enterprise routers in real time. Flow logs allow you to monitor the network traffic of attachments and analyze network attacks, improving your O&M efficiency.

Flow logs can capture traffic of the following types of attachments:

VPC attachment

Virtual gateway attachment

VPN gateway attachment

Peering connection attachment

Global DC gateway