METHOD FOR DETERMINING VIRTUAL NETWORK TOPOLOGICAL STRUCTURE, AND PROVIDER EDGE DEVICE

摘要

Provided are a method for determining a virtual network topological structure, and a provider edge device. The method comprises: a first provider edge (PE) device acquiring attribute information about each candidate virtual core layer device in a virtual private network (VPN); the first PE device determining, according to the attribute information about each candidate virtual core layer device comprised in the VPN, whether the identity of the first PE device is the virtual core layer device; and where it is determined that the identity of the first PE device is the virtual core layer device, the first PE device determining a virtual access layer device comprised in the first PE device, and where it is determined that the identity of the first PE device is not the virtual core layer device, the first PE device determining that the identity of the first PE device is the virtual access layer device and determining a virtual core layer device to which the first PE device belongs. Based on the technical solution, a PE device in a VPN can automatically establish a virtual network topological structure.