Speaker
Description
Some operators have recently been deploying SDN Controllers in the WAN for the first time. This presentation discusses the protocols needed to underpin a quasi-real-time SDN Controller for the WAN, and the major applications of such controllers. The flow of the presentation is as follows:
How an SDN Controller gains visibility of the network, using the following ingredients
(i) BGP-LS for topology discovery, including attributes of physical links such as bandwidth and metrics. This will include a discussion of how a controller gains visibility across multiple AS’s, in the case of multiple-AS networks,
(ii) Streaming telemetry for link and LSP statistics and link latency data
(iii) Status of traffic-engineered LSPs via PCEP
How an SDN Controller instantiates or modifies RSVP or Segment-Routed traffic-engineered LSPs across the network.
Closed Loop Automation, for example
(i) Automated traffic management, by moving LSPs if congestion is detected
(ii) automatically rerouting low-latency LSPs if the latency on a link is detected as having increased
(iii) automatically rerouting LSPs if a fault is detected in a link or node
