OPEN GPON OLT
An Open Disaggregated Broadband Access Device
Agenda
▪ Quick
review of basic Principles
▪ Updates
from the last review of the spec
▪ Example
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Legacy GPON Access Architecture
(Gigabit Passive Optical Network)
Broadband
Network
Gateway
Ethernet
Aggregation
PC
RG
GPON
OLT
PON Splitter
STB w
DVR
ONT
.
.
.
RG
GPON Optical Line
Terminator (OLT)
4
ONT
© 2016 AT&T Intellectual Property. All rights reserved. AT&T, Globe logo, Mobilizing Your World and DIRECTV are registered trademarks and service
marks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks are the property of their respective owners.
PC
Disaggregating an OLT
Everything but the MACs can be virtualized and moved to NFVI using standard:
• Fabric Switches
• Storage
• Servers
Standard HV
Switch
5
Standard HV
Standard HV
Server
Router
We need to create a new standard high volume (HV) MAC
Standard HV
PON MAC Card
PON
PON
OLTOLT
MACs
MACs
Standard HV
Standard HV
Server
Server
Standard HV
Ethernet
NFV OLT
Standard
Equipment
© 2016 AT&T Intellectual Property. All rights reserved. AT&T, Globe logo, Mobilizing Your World and DIRECTV are registered trademarks and service
marks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks are the property of their respective owners.
Minimize Stranded Hardware Complexity
Traditional OLT Line Card
GPON OLT IO Blade
Data
Or
Ctrl
X
X X X
PON OLT
Data &
Control
MACs SoC
NP
Remote In-band management
replaces local host SW
PON OLT
MACs
DDR
PON OLT
MACs SoC
X
Local
Host CPU
DDR DDR DDR DDR
X X X
GPON I/O Blade doesn’t require dedicated
management port, external host CPU or
associated memory.
The result is higher PHY density with low
power, lower cost and significantly lower TCO
6
© 2016 AT&T Intellectual Property. All rights reserved. AT&T, Globe logo, Mobilizing Your World and DIRECTV are registered trademarks and service
marks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks are the property of their respective owners.
PON
Onboard
L2
Switch
PON
Data
10GE
DDR DDR DDR DDR
Open GPON Software Stack
Applications
DC Server
Central Office Rearchitected as a
Datacenter
Open Software
Announcement Next
Week at Open Network
Summit
OpenFlow Controller
Configuration Controller
NETCONF
/ YANG
OpenFlow
OpenFlow Agent
NETCONF Agent
SDN controller, applications,
and agents run on standard servers
Proprietary OLT to Ethernet
Abstraction and Interworking Function OLT API
OMCI Stack
GPON OLT IO Blade
SoC FW & HW Drivers
7
HW drivers
runs on SOC
© 2016 AT&T Intellectual Property. All rights reserved. AT&T, Globe logo, Mobilizing Your World and DIRECTV are registered trademarks and service
marks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks are the property of their respective owners.
PON
OLT
MACs
Open GPON OLT IO Blade
19”
GPON Ports
Ethernet Ports
TOR
Switch
Refactored for NFV:
Big, power hungry,
proprietary OLT chassis
now embodied in 1-2 pizza
boxes
48 GPON OLT Ports
Carrying 120G DS / 60G US
Single Blade
I/O blade fits into the CORD
POD, just like a server.
Connects to 1 or 2 ToRs
In-band management
CORD
POD
8
© 2016 AT&T Intellectual Property. All rights reserved. AT&T, Globe logo, Mobilizing Your World and DIRECTV are registered trademarks and service
marks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks are the property of their respective owners.
Updates to Spec from Last Review
▪ Genericized
dimensions for 1RU 19” device.
▪ Provided
generalized environmental requirements rather than
the specifics for a particular design.
▪ Small
changes to license language
© 2016 AT&T Intellectual Property. All rights reserved. AT&T, Globe logo, Mobilizing Your World and DIRECTV are registered trademarks and service
marks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks are the property of their respective owners.
Example
© 2016 AT&T Intellectual Property. All rights reserved. AT&T, Globe logo, Mobilizing Your World and DIRECTV are registered trademarks and service
marks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks are the property of their respective owners.
Thank You!