NB-VPN Architecture Design Goals
Flexibility
(solution architected around choices, e.g., tunnel
mechanism, backbone transport technology, choice of routing
protocol, etc.).
Scalability
(e.g., backbone scaling, VPN scaling, PE scaling, etc.).
Resiliency
(e.g., NB-VPN services resilient to failures, smooth
migration, recovery, troubleshooting, etc).
Reusability
(e.g., existing management aspects, existing
network mechanisms and tools, etc.).
Security
(e.g., levels of VPN service security, -private routing and data-, etc.).