Rapid expansion of cost-effective Metro Ethernet in regional backbone environments enables implementation of the FTTC-based next generation VDSL networks operating over short-distance loop, which support faster speed than the legacy ADSL networks. Most of the legacy ADSL networks have been implemented in ATM backbone environments, and the protocol architecture is mainly ?ATM over ADSL?. Implementation of VDSL networks in Ethernet backbone environments requires different approaches from the legacy ADSL network implementations in ATM backbone environments. In this paper, two different implementation methods for next generation VDSL networks in Metro Ethernet backbone environments will be proposed, and a comparative analysis resulted from the experiences of real implementations and measurements will be presented. And, migration path from the legacy ADSL networks to the next generation VDSL networks will be also discussed.