Help Center> Enterprise Router> Service Overview> What's an Enterprise Router?
Updated on 2023-12-01 GMT+08:00

What's an Enterprise Router?

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.

If you want to attach VPN gateways to enterprise routers, use the professional edition VPN.

Figure 1 and Figure 2 show the networks with and without enterprise routers, respectively. Table 1 compares the two networks.
Figure 1 A network without enterprise routers
Figure 2 A network with enterprise routers
Table 1 Comparison between the networks with and without enterprise routers

Item

Without Enterprise Routers

With Enterprise Routers

Benefits of Using Enterprise Routers

Communications among VPCs in the same region

  • Create six VPC peering connections between these four VPCs in the same region.
  • Add 12 routes, with three routes for each VPC to communicate with the other three VPCs.
  • Attach the four VPCs to one enterprise router. This router can then handle the traffic from and to all the connected VPCs.
  • 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

Connect all VPCs using Cloud Connect.

You only need to add the enterprise router in each region to a central network as attachments.

  • 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

Establish Direct Connect or VPN connections between each VPC and the data center.

Attach the Direct Connect or VPN connection to the 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 with enterprise routers is simpler and highly scalable and is also easier to maintain.