Wednesday, September 11, 2019

AT&T sees progress with ONF's SEBA, Trellis and other projects

Projects like Trellis, SEBA, OMEC, Stratum, and P4 are redefining what a modern network looks like, said Andre Fuetsch, President, AT&T Labs and Chief Technology Officer, speaking at the Open Networking Foundation’s Connect 2019 conference in Silicon Valley/

AT&T is currently using SEBA (Software-Enabled Broadband Access) to deliver gigabit-plus, low-latency home internet access via white box hardware to 500 homes in the U.S. The carrier plans to scale up in 2020 and beyond.

SEBA (SDN Enabled Broadband Access) is a lightweight virtualized broadband platform originally based on a variant of ONF’s R-CORD. It supports multiple virtualized access technologies at the edge of the carrier network (e.g. PON, G.Fast, DOCSIS), allowing each access technology to be controlled by OpenFlow. Furthermore, mediation software is provided to help operationalize the access devices and connect the SEBA implementation to OSS/BSS systems. SEBA supports both residential access and wireless backhaul and is optimized such that traffic can run ‘fastpath’ straight through to the backbone without requiring VNF processing.


Fuetsch also talked about progress with Trellis, which is seeing very deployment as well.

Trellis defines a solution for an open multi-purpose L2/L3 spine-leaf Ethernet switch fabric for edge data centers and for interconnecting multiple sites. It supports Virtualized Network Functions (VNFs) running on servers, network functions implemented directly within the switch fabric itself, and the interconnection of local and remote resources all in a single solution. Trellis builds a non-blocking fabric using OpenFlow controlled white box switching hardware and open source software. The Trellis fabric does not run any embedded control protocols on the switches (e.g. BGP, OSPF or RSTP). Instead, intelligence is moved into applications running on a clustered ONOS controller.

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