Route Overview

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.

Figure 1 Propagated routes and static routes

**Table 1** Route types
Route Type	Description	How to Create	Description
Propagated routes	Propagated routes are routes that attachments propagate to the route tables of the enterprise router. They cannot be modified or deleted.	To create a propagation, see Creating a Propagation for an Attachment in the Route Table.	Routes are classified into propagated routes and static routes. The routes shown in Figure 1 are described as follows: Propagated routes are from: Propagations automatically created in the default route table of the enterprise router for attachments, such as virtual gateway 1, VPN gateway 1 and VPC 1 attachments. Propagations manually created in the custom route table of the enterprise router for attachments, such as virtual gateway 1, VPC 1, VPN gateway 2, and virtual gateway 2 attachments. Static routes are manually added to the custom route table of the enterprise router for attachments, such as VPC 2 attachment.
Static routes	Static routes are manually created and can be modified or deleted.	To create a route, see Creating a Static Route.

If there are multiple routes with the same destination but different targets in a route table, the route priority is as follows:

Static route > propagated route for attachment > propagated route for virtual gateway attachment > propagated route for VPN gateway attachment

Static routes are manually configured and the destination of each static route must be unique in a route table.
Propagated routes are automatically learned by the system and may have the same destination in a route table.
A static route and a propagated route may have the same destination in a route table.

Parent topic: Routes