The M-series routing architecture is specifically designed to ensure predictable performance for all features. This solution is independent of Layer 2.
Customers can have multiple edge routers on the customer premise.
Customers have no constraints on the address plan and can use either globally unique or private IP address spaces. From your perspective, customers can have overlapping address spaces. Enables you to offer value-added services, such as extranets. Simplifies networks for end customers by outsourcing VPN design and management. Increases scalability by providing a common infrastructure to deliver both VPN and Internet connectivity services.