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VLANs and GVRP on Linux: quickly from specification to prototype using the click router platform

This paper presents how a working prototype of a VLAN (Virtual LAN) and GVRP (Generic VLAN Registration Protocol) aware Ethernet switch for Linux can be built using a “Writing code is good but integrating existing code is much better” approach. The paper is split into two parts. The first part describes the development of the signalling component of the network: the GVRP daemon, the second part describes the Click router architecture and the modifications made to support VLANs.