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Securing virtual private LAN service by efficient key management

Virtual private local area network service VPLS is a layer 2 service provider-provisioned virtual private network service. Security is one of the key system requirements of a VPLS because it delivers the frames via an untrusted network. Several VPLS architectures are proposed during the recent years. However, many of them do not provide a sufficient level of security. On the other hand, the existing secure VPLS architectures are also suffering from the scalability issues, and they are infeasible to implement in large scale networks.