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SDN-Enabled Broadband Access (SEBA)
SEBA RD Team
Thomas Moore (AT&T)December 4, 2018
SEBA Rationale, Assumptions & Architecture
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• Operator-Driven
• Deploy in 2018
• Common infrastructure
• Containers run in Kubernetes as cloud underlayer
• Edge cloud orchestration option for convergence to Akraino EdgeStack(Linux Foundation)
• Enable any Northbound CAP - Legacy OSS and new systems like ONAP
• Integrate to existing networks as well as greenfield
• Aggregation and Service Gateway (ASG) enables Wireline Broadband Network Gateway (BNG) or Wireless PDN Gateway (PGW)
SEBA RD Team Activity
Per-OperatorWorkflow
R-CORDXOSONOSVOLTHA
SEBA RD & Exemplar
Customization HardeningFieldTrial
Production
Deployment
Supply Chain Group
Operator Group
RD Review – ONF Members3
High Level SEBA AT&T Workflow
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A high level overview of the AT&T workflow for SEBA and look at the ongoing AT&T field trials
Michael Gasser (AT&T)December 4, 2018
Reference: SEBA AT&T Workflow
Link: https://wiki.opencord.org/pages/viewpage.action?pageId=4982370
AT&T SEBA Workflow
• POD consists of:• 3 Compute nodes• 1 AGG Switch• Up to 16 x 16 XGS PON Ports• Software Stack
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Abstract OLT
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Name: PLANOTX3400OLT1
Agg Switch 1Uplink: Port 20Slot 1: Port 1Slot 2: Port 2Slot 3: Port 3
Slot 1Edge Core SN: xxxxxxxxxxxx
Port1
Port2
Port15
Port16
Slot 2Edge Core SN: yyyyyyyyyyy
Port1
Port2
Port15
Port16
Slot 3Edge Core SN: zzzzzzzzzzz
Port1
Port2
Port15
Port16
• Builds a representation of the POD hardware as an
OLT with uplinks, slots, and ports.
• Each port supports a split of ONTs
• Provides a consistent model to OSS/BSS with various
hardware configurations
• Support provided for 1 port, 16 port, 24 port, etc. OLTs
• For AT&T the model will provide 16 ports per slot and
up to 16 slots.
• ONT split ratio can be 1 of 2 models
• 32 ports with coexistence of GPON + XGS-PON
• 64 port greenfield
AT&T vAccess Architecture
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Hardware Abstraction (VOLTHA)
vAccess Applications
Local Controller (ONOS)
SEBA Pod
AIC/NC
vOLT HW
ECOMP (ONAP)
OSAM
OSS/BSS
Network Edge Mediator (NEM)
OSAM – Open Source Access Manager
SEBA – SDN-Enabled Broadband Access
NEM – Network Edge Mediator
ONOS – Open Network Operating System
VOLTHA – Virtual OLT Hardware Abstraction
vOLT – virtual Optical Line Terminal (OLT)
PON – Passive Optical Network
DPU – Distribution Point Unit
BGW – Broadband Gateway
ONU – Optical Network Unit
Local OSAM adapter
Device HW Adapter
AAI
Compute AGG switch BNG
DCAESO SDC
CO
AT&TCBB CVoIP
OTT Video
HSIA
ServiceRouting
CloudNetwork
ONU
PON Splitters
Control Plane
User PlaneDPU BGW
16 LUs
16 LUs
DPU FiberG.fast
VID
Fixed Wireless Access
AT&T Workflow High Level Description
• OSAM provides upstream access to the POD
• POD Management
• Operational personnel/systems maintain the POD
• OLT/ONT Management
• Operational personnel/systems define the Abstract Model
• Operational personnel/systems define manage the deployment of specific ONT HW to the Abstract Model (tied in by SN number)
• Service Provisioning
• High Level APIs provide top down provisioning model via the Abstract Model
• APIs include generic parameters such as service type, speeds, BNG mappings, and authentication details applicable to multiple access technologies
• Alarming, Status, and Trouble shooting
• Alarms, Events, and PM information are streamed to Kafka, and transfer via a VES agent to DCAE
• Data collection, alarm reporting and correlation, real time status are handled in ONAP
• Status APIs using industry standard yang definition in the BBF provide on demand access for troubleshooting
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AT&T vAccess Field Trial
The vAccess project helps realize the D2.0 architecture enabling us to support multiple wireline, wireless access technologies at the edge of the network which strategically minimizes latency for customer applications.
This strategic open source architecture is deployed using common Compute servers as used in a Data center, and an Open Compute Platform (OCP) based virtualized OLT (vOLT).
vAccess
Trial POD
CO Trial Details:• Our first application is 10G XGS-PON which
will provide Multi-Gbps services for residential and business customers on the shared fiber
AT&T has deployed the ONF’s Software-Enabled Broadband Access (SEBA) open source software solution in two geographic locations enabling more than 120 living units.
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