Mar 14 – 15, 2019
Park Inn by Radisson Copenhagen Airport Hotel
Europe/Copenhagen timezone

SDN Controllers in the WAN

Mar 14, 2019, 2:00 PM
Park Inn by Radisson Copenhagen Airport Hotel

Park Inn by Radisson Copenhagen Airport Hotel

Engvej 171, 2300 København, Denmark
Standard talk (30 minutes) DKNOG9


Julian Lucek (Juniper Networks)


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

Primary author

Julian Lucek (Juniper Networks)

Presentation materials