Traffic Engineering in an ISP Backbone

• Topology of the ISP backbone

  • Connectivity and capacity of routers and links

• Traffic demands

  • Expected/offered load between points in the network

• Routing configuration

  • Tunable rules for selecting a path for each traffic flow

• Performance objective

  • Balanced load, low latency, service level agreements Ö

• Question: Given the topology and traffic demands in an IP network, which routes should be used?

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