- The document discusses evolving legacy multi-vendor GFP encapsulated Gigabit Ethernet services delivered over SDH links to dynamic Ethernet lightpaths across an optical private line network. This would allow services to meet growing performance demands with smaller margins.
- It proposes transparency through OTN encapsulation, end-to-end performance monitoring via MEF 2.0 SOAM, and scaling capacity/reach through OTUk interfaces between network operators.
- Initial solutions involve GFP encapsulation over STM-64 links but scaling could use redeployed ROADMs and evolving to dynamic lightpaths treated as virtual paths within an optical core network.
NGFI (Next Generation Fronthaul Interface) native RoE (Radio over Ethernet)ITU
This is a presentation and a demo for both NGFI (Next Generation Fronthaul Interface) native RoE (Radio over Ethernet) with Intra PHY split implemented in it, and CPRI over Ethernet encapsulated in structure agnostic mode. Compared to CPRI, the NGFI native RoE implementation improves bandwidth usage greatly, which better supports 5G applications demanding for higher bandwidth. In the CPRI over Ethernet demonstration, bidirectional CPRI flows are recovered without error, which enables C-RAN (centralized radio access network) architecture by using Ethernet as a transport network.
Author : Anders Lund, Bomin Li, Thomas Nørgaard, Comcores
Presented at ITU-T Focus Group IMT-2020 Workshop and Demo Day, 7 December 2016.
More details on the event : http://www.itu.int/en/ITU-T/Workshops-and-Seminars/201612/Pages/Programme.aspx
UK Spectrum Policy Forum – Trevor Faulkes, HS2 - Railway input to UK Spectrum...techUK
UK Spectrum Policy Forum
Cluster 2 Meeting – 25 September 2014
Trevor Faulkes, Head of Signalling and Telecommunications, HS2
Railway input to UK Spectrum Policy Forum
More information at: http://www.techuk.org/about/uk-spectrum-policy-forum
All rights reserved
Localization in V2X Communication NetworksStefano Severi
Presentation made by Alireza Ghods and given by Dr. Stefano Severi at CCP Workshop co-located with IEEE Intelligent Vehicles Conference, 19th June 2016 Gothenburg (Sweden)
Fronthaul technologies kwang_submit_to_slideshareKwangkoog Lee
5G Fronthaul Technologies (Especially, this document specifies the e-CPRI technology, because many telcos are now considering the eCPRI for the next fronthaul.)
NGFI (Next Generation Fronthaul Interface) native RoE (Radio over Ethernet)ITU
This is a presentation and a demo for both NGFI (Next Generation Fronthaul Interface) native RoE (Radio over Ethernet) with Intra PHY split implemented in it, and CPRI over Ethernet encapsulated in structure agnostic mode. Compared to CPRI, the NGFI native RoE implementation improves bandwidth usage greatly, which better supports 5G applications demanding for higher bandwidth. In the CPRI over Ethernet demonstration, bidirectional CPRI flows are recovered without error, which enables C-RAN (centralized radio access network) architecture by using Ethernet as a transport network.
Author : Anders Lund, Bomin Li, Thomas Nørgaard, Comcores
Presented at ITU-T Focus Group IMT-2020 Workshop and Demo Day, 7 December 2016.
More details on the event : http://www.itu.int/en/ITU-T/Workshops-and-Seminars/201612/Pages/Programme.aspx
UK Spectrum Policy Forum – Trevor Faulkes, HS2 - Railway input to UK Spectrum...techUK
UK Spectrum Policy Forum
Cluster 2 Meeting – 25 September 2014
Trevor Faulkes, Head of Signalling and Telecommunications, HS2
Railway input to UK Spectrum Policy Forum
More information at: http://www.techuk.org/about/uk-spectrum-policy-forum
All rights reserved
Localization in V2X Communication NetworksStefano Severi
Presentation made by Alireza Ghods and given by Dr. Stefano Severi at CCP Workshop co-located with IEEE Intelligent Vehicles Conference, 19th June 2016 Gothenburg (Sweden)
Fronthaul technologies kwang_submit_to_slideshareKwangkoog Lee
5G Fronthaul Technologies (Especially, this document specifies the e-CPRI technology, because many telcos are now considering the eCPRI for the next fronthaul.)
Roles and Requirements for xHaul Segments in 5G Transport NetworksRoderick Dottin
OTN aggregation as a bearer technology within xHaul (Fronthaul, Midhaul, Backhaul) segments in support of overlaying 5G network capabilities onto a brownfield transport network
Data center trends_from_telco_perspectives_kwangkoog_submitKwangkoog Lee
This slide introduces the trends of data centers of telecommunication companies. Especially, it explains why current enterprise connections are towards many data centers. Accordingly, it shows that current telcos are preparing data center interconnect (DCI) technology. Additionally, the slide introduces the KT approach for the DCI service.
The transport network for 5G is much more than just backhaul; it’s the critical backbone connecting the core network all the way to the service layer at the edge via the midhaul and fronthaul. For more details, please visit: https://www.fujitsu.com/us/products/network/products/
Sub-100ns accuracy at cell sites over commercial WDM networksADVA
In his ITSF 2020 presentation, Nir Laufer explained how robust timing with nanosecond precision can be achieved by delivering timing over PTP-optimized optical transport channels. He discussed tackling GNSS vulnerabilities – including the growing threat of jamming and spoofing attacks – by ensuring robust backup from ePRTC core clocks to the aggregation site.
5G Transport Network Requirement for Indian Telecom By Subrata SenSukhvinder Singh Malik
There are few people whom we meet and connect instantly. Recently, We met Subrata Sen, (Head, Fiber/Transport Planning at Bharti Infratel Ltd) and veteran in telecom industry during a conference. During our conversation, we had long discussion about upcoming technologies and how important the backhaul , specially fiber is for future network.
For example, if we wish to move our telco infrastructure to Cloud, virtualize our network elements, do we have the capability to move all data traffic to centralized cloud? Mr. Sen provided his expert opinion on how the transport network needs to be redesigned and what are important parameters for the same.
Next-Generation Ethernet: From 100 Gbps to 400 Gbps and Beyond-PowerPoint Sl...n-tech Research
PowerPoint slides from a new CIR report titled, "Next-Generation Ethernet: From 100 Gbps to 400 Gbps and Beyond"
In this report, CIR presents its view on where 400 GigE opportunities will be found for component makers, equipment firms and carriers. It focuses on demand from medium-to-large data centers, but also discusses how 400 GigE will play in metro networks and in WANs. Since 400 GigE will be a significant technological challenge, this report also discusses how the latest VCSEL, FEC and modulation technology will enable the new 400 GigE standard. Also covered are the likely module MSAs that will be used for 400 GigE.
The report also provides a strategic assessment of firms that will be the key players in 400 GigE space. Firms discussed in this report include: Arista, Avago, Brocade, Cisco, Extreme Networks, Facebook, Finisar, Furukawa, Google, IBM, JDSU, Juniper, Molex, Netflix, Sumitomo, TE Connectivity, ULM Photonics, and VI Systems.
LTE Advanced carrier aggregation, it is possible to utilise more than one carrier and in this way increase the overall transmission bandwidth. These channels or carriers may be in contiguous elements of the spectrum, or they may be in different bands.
Roles and Requirements for xHaul Segments in 5G Transport NetworksRoderick Dottin
OTN aggregation as a bearer technology within xHaul (Fronthaul, Midhaul, Backhaul) segments in support of overlaying 5G network capabilities onto a brownfield transport network
Data center trends_from_telco_perspectives_kwangkoog_submitKwangkoog Lee
This slide introduces the trends of data centers of telecommunication companies. Especially, it explains why current enterprise connections are towards many data centers. Accordingly, it shows that current telcos are preparing data center interconnect (DCI) technology. Additionally, the slide introduces the KT approach for the DCI service.
The transport network for 5G is much more than just backhaul; it’s the critical backbone connecting the core network all the way to the service layer at the edge via the midhaul and fronthaul. For more details, please visit: https://www.fujitsu.com/us/products/network/products/
Sub-100ns accuracy at cell sites over commercial WDM networksADVA
In his ITSF 2020 presentation, Nir Laufer explained how robust timing with nanosecond precision can be achieved by delivering timing over PTP-optimized optical transport channels. He discussed tackling GNSS vulnerabilities – including the growing threat of jamming and spoofing attacks – by ensuring robust backup from ePRTC core clocks to the aggregation site.
5G Transport Network Requirement for Indian Telecom By Subrata SenSukhvinder Singh Malik
There are few people whom we meet and connect instantly. Recently, We met Subrata Sen, (Head, Fiber/Transport Planning at Bharti Infratel Ltd) and veteran in telecom industry during a conference. During our conversation, we had long discussion about upcoming technologies and how important the backhaul , specially fiber is for future network.
For example, if we wish to move our telco infrastructure to Cloud, virtualize our network elements, do we have the capability to move all data traffic to centralized cloud? Mr. Sen provided his expert opinion on how the transport network needs to be redesigned and what are important parameters for the same.
Next-Generation Ethernet: From 100 Gbps to 400 Gbps and Beyond-PowerPoint Sl...n-tech Research
PowerPoint slides from a new CIR report titled, "Next-Generation Ethernet: From 100 Gbps to 400 Gbps and Beyond"
In this report, CIR presents its view on where 400 GigE opportunities will be found for component makers, equipment firms and carriers. It focuses on demand from medium-to-large data centers, but also discusses how 400 GigE will play in metro networks and in WANs. Since 400 GigE will be a significant technological challenge, this report also discusses how the latest VCSEL, FEC and modulation technology will enable the new 400 GigE standard. Also covered are the likely module MSAs that will be used for 400 GigE.
The report also provides a strategic assessment of firms that will be the key players in 400 GigE space. Firms discussed in this report include: Arista, Avago, Brocade, Cisco, Extreme Networks, Facebook, Finisar, Furukawa, Google, IBM, JDSU, Juniper, Molex, Netflix, Sumitomo, TE Connectivity, ULM Photonics, and VI Systems.
LTE Advanced carrier aggregation, it is possible to utilise more than one carrier and in this way increase the overall transmission bandwidth. These channels or carriers may be in contiguous elements of the spectrum, or they may be in different bands.
We suddenly live in a strange and wonderful nexus of digital and physical. Touchscreens let us hold information in our hands, and we touch, stretch, crumple, drag, and flick data itself. Our sensor-packed phones even reach beyond the screen to interact directly with the world around us. While these digital interfaces are becoming physical, the physical world is becoming digital, too. Objects, places, and even our bodies are lighting up with with sensors and connectivity. We’re not just clicking links anymore; we’re creating physical interfaces to digital systems. This requires new perspective and technique for web and product designers. The good news: it’s all within your reach. With a rich trove of examples, Designing for Touch author Josh Clark explores the practical, meaningful design opportunities for the web’s newly physical interfaces.
3 Things Every Sales Team Needs to Be Thinking About in 2017Drift
Thinking about your sales team's goals for 2017? Drift's VP of Sales shares 3 things you can do to improve conversion rates and drive more revenue.
Read the full story on the Drift blog here: http://blog.drift.com/sales-team-tips
Significant amount of research and development has been made in the field of core network and it operates in hundreds Gigabits per second (Gbps) speed currently. But on seeing the growth in bandwidth demand in the access network which is exploding day by day, the only promising solution is to upgrade the access network. So it is essential to have an efficient access network that can operate at high functional speeds to support differentiated services like Video on Demand (VOD), High Definition TV, video conferencing, Telemedicine, Uploading and Downloading jumbo files. Apart from these access network always been sensitive to cost and geographical region of coverage it can handle. So internet service providers will have to make a tradeoff between capital expenditure (CAPEX), operational expenditure (OPEX) and geographical region of coverage.
There are mainly five types of access network APON, BPON, GPON, EPON and 10G-EPON. APON provides 622 Mbps of downstream bandwidth and 155 Mbps of upstream. GPON was the advanced version of the BPON and support at a rate of 2.444 Mbps and 1.42 Mbps in downstream and upstream data rate. EPON has symmetry of 1Gbps of upstream and downstream rates. EPON is totally data-centric based on voice, video and data. 10G-EPON is capable of providing broadband access to large number of customers in metropolitan area. Due to the advancement in the optical technology, 10G-EPON (IEEE 803.2av) provides 1Gbps and 10Gbps upstream and downstream data rate with distance more than 20 km.
Mobile Transport Evolution with Unified MPLSCisco Canada
Mobile Service Providers are seeing unprecedented challenges in relation to their Transport architectures with the 3GPP evolution towards IP based Node Bs, LTE (Long Term Evolution) and LTE-Advanced. This presentation will initially discuss the network migration trends and factors that are changing how mobile networks are evolving. A description is provided on Unified MPLS and the current issues that need to be fixed and how this architecture addresses this. A more detailed analysis will then examine the options available for transporting GSM/2G, UMTS/3G traffic and IP/Ethernet Node B deployments and some of factors that need consideration like scalability, resiliency and security. Finally, there is a detailed description of the LTE/LTE - A evolution and the feature requirements made on the transport network. There will be detailed analysis of different LTE models and also some technical enhancements and proposals considered for the implementation of LTE in a Unified MPLS environment.
10-Gb/S Transmission of Wdm Pon for Man with 50km Reach Based On FtthIJERA Editor
The wavelength-division-multiplexed passive optical network (WDM-PON) is considered to be the next evolutionary solution for a simplified and future-proofed access system that can accommodate exponential traffic growth and bandwidth-hungry new applications. WDM-PON mitigates the complicated time-sharing and power budget issues in time division- multiplexed PON (TDM-PON) by providing virtual point-to-point optical connectivity to multiple end users through a dedicated pair of wavelengths. The objective of this paper is proposed a scheme for metropolitan area networks comprising optical components based on arrayed waveguide grating multiplexers, demultiplexers .The Arrayed waveguide gratings based multiplexers and demultiplexers for WDM applications prove to be capable of precise multiplexing and demultiplexing of a large number of channels with relatively low losses.
Since the photonic layer is the cheapest on a per-bit, per-function basis, and since
the key imperative before operator's today is to bridge the yawning gap between
exponentially increasing data traffic on the one-hand, and flat-to-declining revenues
on the other, a tighter coupling between the packet and optical layers to derive
operational, management, and deployment efficiencies, has...
Presentation at Networkshop46.
Over the past 12 months, Jisc has been through an extensive design and procurement exercise aimed at overhauling the way in which access connectivity solutions are delivered to customers, with the objectives of achieving greater reliability, greater flexibility, and greater value for money.
Hear from the Jisc team involved in the design and procurement of the new access arrangements, and the suppliers Jisc is partnering with to deliver the solutions. They talk about the technology involved, the benefits to Janet connected organisations, and the 5 year deployment and ‘transformation’ plan.
Speakers:
Rob Evans, chief network architect, Jisc
James Blessing, deputy director of network architecture, Jisc
ASON – Automatically Switched Optical Networks
Dynamically switch the light path
Enabler for many applications
Controlled by UNI and NNI – Allow applications to set the light path
Allow to add the intelligence into the optical core
ASON:
The Automatic Switched Optical Network (ASON) is both a framework and a technology capability.
As a framework that describes a control and management architecture for an automatic switched optical transport network.
As a technology, it refers to routing and signalling protocols applied to an optical network which enable dynamic path setup.
Recently changed names to Automatic Switched Transport Network (G.ASTN)
PLNOG 13: Krzysztof Konkowski: Cisco Access Architectures: GPON, Ethernet, Ac...PROIDEA
Krzysztof Konkowski – Consulting Systems Engineer working in IP NGN Team, Cisco. Mainly focused on carrier class solutions for broad range of customer segments: service provider, public sector, enterprise. Main technical expertise: MPLS/IP, Carrier Ethernet, BNG, Multicast. Holder of many certificates – amongst others CCIE RS i CCIE SP #20050.
Topic of Presentation: Cisco Access Architectures: GPON, Ethernet, Access for business
Language: Polish
Abstract: TBD
View all Sessions
Kashif Islam, Solutions Architect , Cisco
Jay Romero, Sr. Director, IT Operations , Erickson Living
Come and learn how Erickson Living achieved deployment success using Cisco ME4600 based GPON Solution. Guest Presenter: Jay Romero, Sr.Director - IT Operations. Passive Optical Networks (PON) provides an effective and efficient way of providing fiber based high speed access to residential and business users. With the ever-growing demand for higher bandwidth, service providers are looking for fiber solutions that are cost-effective and easy to deploy and manage. This session will provide an insight into PON technology, with a focus on Gigabit-Capable PON. Attendees will learn basic design principles and applicable use cases for architecting a GPON Network using the Cisco ME4600 OLT and ONT/ONU. The presentation will outline the requirements to configure and verify an end-to-end service over ME4600 OLT. Redundancy mechanisms, such as Type B protection, in a GPON based environment will also be covered Attendees will walk away from this session with a firm understanding of the GPON technology, a clear view of applicability of GPON vs point-to-point ethernet for varius scenarios and reference designs for an effective, fast and reliable GPON network using Cisco ME4600 series of OLT and ONT products.
Kyeong Soo Kim, Academic Weeks Videoconference Session with Pakistan COMSATS Institute of Information Technology (CIIT), Swansea University, Swansea, Wales UK, Dec. 14, 2010.
Similar to Orange_US Domain (revised with notes) (20)
Data Networks: Next-Generation Optical Access toward 10 Gb/s Everywhere
Orange_US Domain (revised with notes)
1. On Evolving to Dynamic
Ethernet Lightpaths across
Optical Private Lines
Presenter: Roderick Dottin / Orange
Date: October 6, 2015
2. interne Orange2
Drivers
Meeting the ever growing performance demands of value-added
services with smaller and smaller margins. How can this trend be
reversed?
Transparency – Legacy multi-vendor GFP encapsulated Gigabit
Ethernet over VC-4-16c SDH Links
End-to end Performance – Carrier OA&M at OTN-encapsulated
boundaries and MEF 2.0 Ethernet SOAM across Operator Domain
Scale – Explore Network Operator / Orange Interworking at OTUk
Interface in order to extend capacity/reach of Backbone Network
3. interne Orange3
Hubbing Network
EoSDH
8 x 1GbE
US Domain – Transparent Ethernet over SDH (EoSDH)
Transport
VCG-1 (3 x AU3s); VCG-2 (7 x AU4s); …
8 x 1GbE
VCG-1 (3 x AU3s); VCG-2 (7 x AU4s); …
100 bT
1 GbE
100 bT
1 GbE
• Port-based VCAT mapping at international
multi-vendor GFP encapsulation nodes
• Bundle VCG constituents of various sizes into
AU4-16c paths across broadleaf network
AU4-16c AU4-16c
These virtual paths can evolve into dynamic scalable lightpaths within the
core optical network
Bundling restricts max. tolerable differential VCG delay to less
108ms (before generating Ethernet framing errors)
Above approach still allows for dynamic path restoration and optical
bypass capability
Ability to scale OTN client interfaces to 100G/400G and beyond
4. interne Orange4
Day 1 Solution – GFP Encapsulated Gigabit Ethernet over SDH
Manasquan
Tuckerton
NY/XFT6
___ South route
___ North route
Miami/XFT2
TAT-14 Sud
FLAG Atlantic-1
AM-II
Core Router
US Domain
EoSDH
SDH Gateway
PHL/XFT1
LOS OSOS
NY/XFT9
n x STM-64
n x STM-16 OJUS
Gemini /
CBUS
Island Park, NY
SONET Gateway
• Downgrading TAT-14 backhaul to
leased capacity will free-up
ROADMs
• To scale STM-64 links beyond
Day1 capacity, redeploy ROADMs
within US backbone
Japan / US
6 x GbE
**
:
5. Orange presentation
Reference Model – Infrastructure as a Service
Next Gen Stack…
–
• ITS
a = SDH / Sonet
b = Lambdas
c = Ethernet
Transport
• IP services
• ATM - QoS
Intelligent Optical Layer
ATM
a
b
ValueAddedServices
Layering Services
• Next Gen Services
• Voice Services
Hubbing, Mobile
ETHERNET
SDH /
SONET
OTN
VOICE INTERNET
Extracted from Ref [1], Slide 7
6. Orange presentation
International Access Ethernet Private Line Rollout
Carrier Pop-to-CHLS
Service Provider
Pop-to-CHLS
Orange
Backhaul
LL Orange
Backhaul
Carrier Pop-to-CHLS
Service Provider
Pop-to-CHLS
Orange
Backhaul
LLOrange
Backhaul
Submarine
Cable
Submarine
Cable
Submarine
Cable
Submarine
Cable
Extracted from Ref [1], Slide 9
7. Orange presentation
Operator B DomainOperator A Domain
Carrier OA&M at Core and Access Network
Boundaries
LF
LF
LF
RF
RF
ITU-T G.709 / Y.1331
(802.3ba Adopted
Baseline)
MEF 30 (Fault Mgmt per
IEEE 802.3ag / Y.1731)
MAC Status
Defects / Link Fault
Indication
MAC Status Defects /
Remote Fault
Indication
OTN Backbone
RF
LF
E-NNIE-NNI
UNI UNI
Service ProviderSubscriber Subscriber
Subscriber Domain
Service Provider Domain
LL Operator A LL Operator B
E-NNIE-NNI E-NNI
X
E-NNI
Carrier 2.0 Ethernet SOAM support over OTN – Ref [2], [3]
8. interne Orange8
Handling Scale in US Domain – Leased Optical Private Network
Manasquan
Tuckerton
NY / XFT6
___ South route
___ North route
Miami / XFT2
TAT-14 Sud
FLAG Atlantic-1
AM-II
Core Router
US Domain
EoSDH
SDH Gateway
PHL/XFT1
LOS OSOS
NY / XFT9
n x STM-64
n x STM-16 OJUS
Gemini /
CBUS
Island Park, NY
SONET Gateway
Japan / US
6 x GbE
**
:
WAS (ASHVA)
BMM
BMM
BMM
OTUk
NNI
OTUk
NNI
OTUn
NNI
ODUk
• Network Operator / Orange
Interworking at OTUk NNI
• Deliver 2.5G, 10G Services
as ODUk payloads
For my presentation today, I'll like to elaborate on an initiative to deliver international Ethernet services within the US Domain.
We’ll then explore next steps needed to evolve from the initial static approach, towards Dynamic Ethernet Transport
A major issue facing Carriers and Service Providers is having to deploy value-added services with ever growing performance demands yet smaller and smaller margins. A trend among various speakers at 2015 NGON USA conference is that we are reaching the point where costs will exceed revenue; especially with the rollout of data services. The question that begs answering is "How can this trend be reversed ?"
This presentation seeks to answer this question by taking a bottoms-up approach to the infrastructure rollout needed:
Starting with the day1 solution: Transparent transport is a prime driver (being an environment with multi-vendor nodes in International locations) so we use standards-based GFP encapsulation at the remote nodes, then employ VCAT mapping onto SONET/SDH payloads; in this case, concatenated STM-16's links;
For end-to-end performance, we must also consider carrier-grade OA&M capability across Network Operator boundaries;
Considering the need to scale, will explore vendor proposal of utilizing OTUk links to extend capacity/reach of the backbone network.
[BTW during the presentation the order of the 2nd and 3rd points will be reversed...]
In our bottoms up approach, we shall deconstruct the Day1 Solution. Shown here is the underlying structure for transparent Ethernet transport across the US Domain.
Incoming data traffic at Ethernet ports are encapsulated using frame-mapped Generic Framing Procedure (GFP-F) per ITU-T G.7041/Y.1303. These frames are then mapped onto SONET/SDH payloads using port-based Virtual Concatenation (VCAT) – per ITU-T G.707 11.1. This approach establishes a 1-to-1 relationship between ingress/Egress Ethernet ports and Virtual Concatenation Group (VCG) of contiguous time slots (constituents).
So for Ethernet ports of different sizes, the resulting VCG constituents of varying granularities are organized into dedicated AU4-16c paths/virtual circuits across the US backbone (bundling enabled in the grooming eqpt). The above has already been validated by the transparency testing done thus far.
For the planned evolution, these virtual paths can evolve into dynamic scalable lightpaths within core network; but with some embedded constraints:
bundling will restrict VCG differential delay to less than 108ms (avoiding the generation of framing errors);
dynamic path restoration and optical bypass will be possible but performed at 2.5G sub-wavelengths to keep the virtual circuits intact;
aligning the rollout with the established roadmap will allow for OTN Client I/Fs to scale to 100G/400G and beyond (as standards become available in the market).
Understanding the underlying infrastructure, we take a look at the implementation of the Day 1 Solution, exploiting leased capacity from the submarine cable landing stations, which is backhauled to the SDH backbone nodes.
So Gigabit Ethernet traffic from French West Indies – namely, Martinique and Guadeloupe – can be transported across the Americas II and CBUS submarine cables to the US backbone, then groomed onto TAT-14 South and FLAG transatlantic cables towards Paris; traffic from St Martin will terminate in NY at 111 8th Ave.
Note that transparency testing has been completed with multi-vendor eqpt across transatlantic link from France to New York, with zero Frame Loss and transmission errors.
While the existing network capacity can be met with STM-64 links, projected growth would require the stacking of leased STM-64 backbone links.
In parallel, a planned downgrade of the TAT-14 backhaul to leased capacity would free-up existing ROADMs, which could be redeployed within the US backbone to handle scale.
From the current static model we now transition to the planned evolution of the network. The reference model shown can support both legacy as well as Next-Gen services. It is based on an intelligent optical layer upon which Value Added Services such as Carrier Ethernet 2.0 and OTN wavelength services can be scaled and dynamically routed within the Core network; delivering: Next Gen, Managed Transport as well as existing legacy services (IP for Bus. Applications; ATM for QoS; Voice services).
There is ongoing convergence activity within the intelligent optical layer between SDN + OTN + Dynamic ROADM technology that will provide flexible, any-any grooming and delivery of user-driven, on-demand services – these services can be turned-up, modified and torn-down in real time.
Note that this collaboration could be the foundation for the Uberization of the backbone network and one of the reasons why NGON can be a pivotal environment in fostering such discussion.
Targeting Ethernet-Transport•as•a•Service, a reference circuit is defined for rollout of an international Access Ethernet Private Line (Access EPL). The design layout, as shown, provides a dedicated connection between two international cities from a LL Service Provider POP or the Carrier POP in City A across the pond to a Cable Head Landing Station (CHLS) in City Z. The circuit can then include a backhaul segment to the Carrier POP (which typically houses the ROADM eqpt) and a Local Loop segment to connect to the LL Service Provider. From the Service Provider's perspective, these are the nailed-up segments of the circuit with longest lead-times.
Once installed, it is the LL Service Provider who can now provide MEF 2.0 defined Access EPL services to Subscribers via managed demarc; maybe achieving Customer Prem to Customer Prem managed Ethernet transport via a tunneling mechanism such as Provider Backbone Transport (perhaps PBB-TE or MPLS-TP).
Such mechanisms will support: end-to-end connection protection, OAM packet transmission. These are carrier grade properties that can be brought to the customer premises.
Extending OAM capability to a managed demarc at Customer Premises remains a challenge; MEF 2.0 service definitions may make this possible. Carrier Ethernet 2.0 Service OAM architecture results in nesting arrangement in which a MEG with a lower MEG Level cannot exceed the boundary of a MEG with a higher MEG Level, defined such that:
1) a MEP at a particular MEG Level transparently passes SOAM traffic at a higher MEG Level;
2) terminates SOAM traffic at its own MEG Level;
3) discards SOAM traffic at a lower MEG Level.
Combining this Layer 2 architecture with the interoperability agreement shown, a failure within the OTN core will generate a Link Failure which is propagated across the core network to Ethernet interface at Egress. And per the MEG nesting defined above, is passed along Maintenance Entities within the Operator Domain to furthest E-NNI, at which Link Fault Indication is declared.
Likewise a Remote Failure is sent upstream within the core network to the Ethernet interface at Ingress, then passed along Maintenance Entities within Operator Domain to furthest E-NNI, at which Remote Fault Indication is declared; setting up a signaling mechanism for fault located within the core network.
Having laid out the infrastructure model and defined the reference circuit we return to the Day 1 configuration. For considerations to scale the network and expand ROADMs across the US backbone, it is now feasible to deploy leased Optical Private Network.
Instead of leasing dark fiber pair to reach a new backbone node, we lease a point-to-point OPN link with OTUk NNI hand-off between the Network Operator and the Orange ROADM; OTU4 is the planned interface.
The ODU1, ODU2 payloads will deliver the 2.5G and 10G services as virtual circuits. This template will be replicated across US backbone in turning up other nodes.
This concludes the planned evolution of the US backbone and I hope that you found it of interest. One more comment is that the discussion was derived from the ODIN initiative internal to Orange, but relaunched within the US domain with a more generic approach.