Foundry's NetIron Metro routers allow service providers to generate incremental revenue and lower costs with new Metro services, delivered on scalable, cost-effective, packet-switched MPLS based metro networks. The NetIron metro router family offers industry leading MPLS Metro solutions with complete Draft Martini and Virtual Private LAN Services (VPLS) for point-to-point and multipoint-to-multipoint secure VPN services, complemented by RSVP-TE for traffic engineering in the metro core. The NetIron metro routers can be equipped with a variety of MetroLink interface modules that unify SONET and 10 Gigabit Ethernet technologies with a consistent feature set and management, to protect existing investment in SONET. Metro solutions built with NetIron routers improve service velocity with rapid service provisioning, accurate accounting and billing services.The NetIron modular router systems range from a compact 4-slot system to 8-slot and 15-slot systems allowing service providers to standardize on a single product family from Multi Tenant Unit (MTU), Provider Edge (PE), and Provider Core (P) to the Internet Edge (IE). This simplifies sparing, network management and operations to lower the operational expenditures (OpEX). Foundry's NetIron metro routers allow service providers to start with cost-effective Layer 2 Metro solutions with seamless migration to MPLS metro architecture to pace upfront investment in harmony with subscriber growth. NetIron routers allow service provider to offer multiple services over a common metro network to generate incremental revenue with minimal additional investments.