IP Network Traffic Engineering
Goal? In operational IP networks, improve performance and make more efficient use of network resources, by better matching the resources with traffic demands
How? By integrating
- traffic measurement
- network modeling
- selection and configuration of network management and control mechanisms.
Time Scale? Tens of minutes, hours, days, …
Applications?
- Troubleshooting performance problems.
- Why is this link congested?
- Incremental load balancing
- How to tune intradomain (OSPF, IS-IS) routing weights, or interdomain (BGP) import policies?
- Capacity planning and optimization
- How to estimate facilities cost from forecasted demands and optimal design?
Focus of this talk: ISP backbone networks
(See framework draft of new IETF, Traffic Engineering Working Group)