OFC 2016: Multilayer Restoration Takes Center Stage

We went to OFC 2016 with very high expectations. After all, we were about to demonstrate in Anaheim, California, the world’s first multilayer, multivendor automatic restoration of a fiber cut. Nevertheless, we were overwhelmed by the responses of operators, vendors, and analysts. In our booth and outside it, multilayer control was a major theme in…

Reporting Back from ONS 2015

We just came back from the Open Networking Summit (ONS ’15). The event was quite interesting, both in terms of the exhibit floor and the talks. There was good participation, albeit more on the vendor side than the customer side. My main impression is that SDN technologies and solutions are moving from testbeds and concepts…

A Multilayer Perspective on OFC 2015

OFC was very exciting this year with lots of exhibitors and visitors, and lots of creative ideas in talks and in products. Overall Impression Multilayer networking and centralized control (which is what SDN means at the end of the day) have been widely discussed at OFC. The value of multilayer control has now been validated…

The Need for SDN in Orchestration of IP over Optical Multivendor Networks

This technical document explains why distributed control lacks the ability to optimally control networks with multiple transport domains or both IP/MPLS and Optical layers. The paper, authored by Ori Gerstel of Sedona and Victor Lopez of Telefonica, then proposes a practical architecture to fix these issues and experimentally demonstrate it over commercial IP and transport gear.