Help Center> Enterprise Router> Service Overview> What's an Enterprise Router?
Updated at: 2022-09-21 GMT+08:00

What's an Enterprise Router?

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

Enterprise routers are available for open beta test. During the test, VPCs can be attached to enterprise routers by default. If you need to use Direct Connect, Virtual Private Network (VPN), or Cloud Connect together with enterprise routers, submit a service ticket.

Figure 1 and Figure 2 show the network topologies with and without enterprise routers, respectively. Table 1 compares the two network topologies.
Figure 1 Without enterprise routers
Figure 2 With enterprise routers
Table 1 Comparison between the network topologies with and without enterprise routers

Item

Without Enterprise Routers

With Enterprise Routers

Benefits of Using Enterprise Routers

Communications between VPCs in the same region

  • You need to create six VPC peering connections between these four VPCs in the same region.
  • You need to add 12 routes, with three routes for each VPC to communicate with the other three VPCs.
  • You only need to attach these four VPCs to the enterprise router. This router can then handle traffic from and to all the connected VPCs.
  • You only need to add routes to the route tables of these four VPCs for routing traffic through the enterprise router. The enterprise router can automatically learn the VPC CIDR blocks and add them to its route table.
  • There is no need to configure a large number of VPC peering connections.
  • Fewer routes need to be added, simplifying the maintenance.

Communications between VPCs in different regions

  • You need to connect all VPCs using Cloud Connect.
  • You only need to connect the enterprise router in each region to Cloud Connect.
  • There is no need to connect all VPCs to Cloud Connect, simplifying the network topology.
  • Route propagation simplifies the route configuration and the networking process.

Communications between an on-premises data center and VPCs

  • You need to establish Direct Connect connections between each VPC and the data center.
  • You only need to attach the Direct Connect connection to an enterprise router. These VPCs can then share the connection.
  • Route propagation simplifies the route configuration and the O&M.
  • Multiple lines work in load-sharing or active/standby mode to achieve higher availability.

The comparison shows that the network topology with enterprise routers is simpler and highly scalable and is also easier to maintain.

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