Patent ID: 8873549

Claim:
A system, comprising: a first Cable Modem Termination System (CMTS) encoded with instructions that, if executed, result in: accessing a Data Over Cable Service Interface Specification (DOCSIS) configuration file sent from a first cable modem in response to the first cable modem coupling to a fiber node of the first CMTS in a fiber node split operation that moves a connection of the first cable modem to the fiber node of the first CMTS following the first cable modem being disconnected from a different fiber node of another CMTS; extracting, from the DOCSIS configuration file, a network identifier for a virtual private network to having connected the first cable modem to a second cable modem via a Layer 2 Virtual Private Network (L2VPN) connection, the second cable modem coupled to a second CMTS; extracting, from the DOCSIS configuration file, pseudowire information for discovering a target for establishing a pseudowire between the first CMTS and the second CMTS connecting the second cable modem; generating a notification using a routing protocol; and inserting, into the notification, the extracted network identifier and pseudowire information before sending the generated notification to the second CMTS, enabling the second CMTS and the first CMTS to establish the pseudowire to maintain, after the fiber split operation, the L2VPN connection for the virtual private network between the first cable modem and the second cable modem.