"How to handle ever-increasing traffic" is an inevitable issue in backbone network.
Generally, there are two methods how to increase resource
- Scale-up : Replace old devices to new devices which has higher capability
- Scale-out : Add similar devices parallel
In current backbone networks, many operators may rely on scale-up method : If router's available resource exhausts, operator replaces the router to new router which has higher forwarding capability.
However there is a fundamental problem that if "traffic growth ratio" exceeds "router's forwarding capability growth ratio", operator cannot catch up the traffic growth and traffic will overflow.
In this presentation, based on KDDI's MPLS backbone network I will show you an scale-out MPLS backbone network architecture and I would like to discuss with you.
