Autodiscovery for virtual networks

摘要

The present invention facilitates automatic discovery of VPN-related information, which relates to the existence or association of VPNs as supported by provider edge devices in a core network. In particular, the Border Gateway Protocol (BGP) is used to facilitate the automatic discovery, and the provider edge devices are capable of subsequently and automatically triggering Label Distribution Protocol (LDP) processes to facilitate signaling over LDP sessions within the core network.

主权项

1. A method executed at an edge node, the method comprising:
negotiating communication capabilities with a remote provider node using a first protocol that is not a label distribution protocol (LDP); receiving, via the first protocol, information bearing on establishment of a layer 2 Virtual Private Network (VPN) distributed during an autodiscovery process; and in response to determining that the layer 2 VPN exists on the edge node, automatically initiating a signaling session process using LDP.