There's been considerable industry interest surrounding SPRING, also known as Segment-Routing. Many operators are incorporating SPRING technology into their networks currently running RSVP-TE. In some cases, the objective is to migrate all services to utilize SPRING-based LSPs. In other cases, there may be a need to manage some application traffic over RSVP-TE LSPs in conjunction with applications using SPRING-based LSPs. In either case, there is a need to manage traffic and capacity across both the RSVP-TE and SPRING domains. While there are a range of options for managing through this period of network transition, all carry varying tradeoffs. An overview of these options is captured within this IETF draft.
The time of SDN/NFV hype is past. Sure, you will still come across exaggerated claims that the cure to all your networking challenges is just a click away but the nature of the conversation has fundamentally changed. It's now grounded in fact; no longer does it reside in that other virtual world - namely PowerPoint. It's now a regular occurrence to hear of a service provider publishing news of a virtualisation strategy or an agreement to embark on a trial.