A virtual border router (VBR) is a product mapping of the leased line that you have applied to access a VSwitch. You can think of it as a router between your customer-premises equipment (CPE) and the VPC, which serves as a bridge for exchanging data between the on-premises IDC and the VPC.

Same as the VRouter in a VPC, VBR also has a route table. You can configure route entries for it to forward traffic.


VBR provides following functions:

  • Exchange data between a VPC and an on-premises IDC as a router.

  • In the layer-3 subinterface mode, VBR can identify or bind VLAN tags.

  • Decide the port mode for the leased line: layer-3 interface or VLAN-based layer-3 subinterface.

  • Support BGP routing.


  • Each VBR have only one routing table.

  • The maximum number of custom routing entries in one routing table is 48.

  • Source address-based policy routing is not supported.