Perspectives on the Future of Service Provider Networking: Distributed Data Centers and Edge Services

The ongoing global pandemic, now approaching its third year, has profoundly illustrated the critical role of the internet in society, changing the way we work, live, play, and learn. This role will continue to expand as digital transformation becomes even more pervasive. However, connecting more users, devices, applications, content, and data with one another is only one dimension to this expansion.

Another is the new and emerging types of digital experiences such as cloud gaming, augmented reality/virtual reality (AR/VR), telesurgery using robotic assistance, autonomous vehicles, intelligent kiosks, and Internet of Things (IoT)-based smart cities/communities/homes. These emerging digital experiences are more interactive, bandwidth-hungry, latency-sensitive, and they generate massive amounts of data useful for valuable analytics. Hence, the performance of public and private networks will be progressively important for delivering superior digital experiences.

Network performance, however, is increasingly dependent on the complex internet topology that’s evolving from a network of networks to a network of data centers. Data centers are generally where applications, content, and data are hosted as workloads using compute, storage, and networking infrastructure. Data centers may be deployed on private premises, at colocation facilities, in the public cloud, or in a virtual private cloud and each may connect to the public internet, a private network, or both. Regardless, service providers, including but not limited to communication service providers (CSPs) that provide network connectivity services, carrier neutral providers that offer colocation/data center services, cloud providers that deliver cloud services, content providers that supply content distribution services, and software-as-a-service (SaaS) application providers all play a vital role in both digital experiences and network performance. However, each service provider can only control the performance of its own network and associated on-net infrastructure and not anything outside of its network infrastructure (i.e., off-net). For this reason, cloud providers offer dedicated network interconnects so their customers can bypass the internet and receive superior network performance for cloud services.

New and emerging digital experiences depend on proximity

In the past, service providers commonly deployed a relatively small number of large data centers and network interconnects at centralized locations. In other words, that’s one large-scale data center (with optional redundant infrastructure) per geographic region where all applicable traffic within the region would backhaul to. New and emerging digital experiences, however, as referenced above, are stressing these centralized data center and interconnect architectures given their much tighter performance requirements. At the most fundamental level, the speed of light determines how quickly traffic can traverse a network while computational power defines how fast applications and associated data can be processed. Therefore, proximity of data center workloads to users and devices where the data is generated and/or consumed is a gating factor for high quality service delivery of these emerging digital experiences.

Consider the following:

◉ High bandwidth video content such as high-definition video on demand, streaming video, and cloud-based gaming. Caching such content closer to the user not only improves network efficiency (i.e., less backhaul), but it also provides a superior digital experience given lower network latency and higher bandwidth transfer rates.

◉ Emerging AR/VR applications represent new revenue opportunities for service providers and the industry. However, they depend on ultra-low network latency and must be hosted close to the users and devices.

◉ Private 5G services including massive IoT also represent a significant new revenue opportunity for CSPs. Given the massive logical network scale and massive volume of sensor data anticipated, data center workload proximity will be required to deliver ultra-reliable low-latency communications (URLCC) and massive machine-type communications (mMTC) services as well as host 5G user plane functions so that local devices can communicate directly with one another at low latency and using high bandwidth transfer rates. Proximity also improves network efficiency by reducing backhaul traffic. That is, proximity enables the bulk of sensor data to be processed locally while only the sensor data that may be needed later is backhauled.

◉ 5G coordinated multipoint technologies can also provide advanced radio service performance in 5G and LTE-A deployments. This requires radio control functions to be deployed in proximity to the remote radio heads.

◉ Developing data localization and data residency laws are another potential driver for data center proximity to ensure user data remains in the applicable home country.

These are just a few examples that illustrate the increasing importance of proximity between applications, content, and data hosted in data centers with users/devices. They also illustrate how the delivery of new and emerging digital experiences will be dependent on the highest levels of network performance. Therefore, to satisfy these emerging network requirements and deliver superior digital experiences to customers, service providers should transform their data center and interconnect architectures from a centralized model to a highly distributed model (i.e., edge compute/edge cloud) where data center infrastructure and interconnects are deployed at all layers of the service provider network (e.g., local access, regional, national, global) and with close proximity to users/devices where the data is generated and/or consumed.

This transformation should also include the ubiquitous use of a programmable network that allows the service provider to intelligently place workloads across its distributed data center infrastructure as well as intelligently route traffic based upon service/application needs (e.g., to/from the optimal data center), a technique we refer to as intent-based networking. Further, in addition to being highly distributed, edge data centers should be heterogeneous and not one specific form factor. Rather, different categories of edge data centers should exist and be optimized for different types of services and use cases.

Four categories of edge data centers

Cisco, for example, identifies four main categories of edge data centers for edge compute services:

1. Secure access service edge (SASE) for hosting distributed workloads related to connecting and securing users and devices. For example, secure gateways, DNS, cloud firewalls, VPN, data loss prevention, Zero Trust, cloud access security broker, cloud onramp, SD-WAN, etc.

2. Application edge for hosting distributed workloads related to protecting and accelerating applications and data. For example, runtime application self-protection, web application firewalls, BoT detection, caching, content optimization, load balancing, etc.

3. Enterprise edge for hosting distributed workloads related to infrastructure platforms optimized for distributed applications and data. For example, voice/video, data center as a service (DCaaS), industrial IoT, consumer IoT, AI/ML, AR/VR, etc.

4. Carrier edge for hosting distributed workloads related to CSP edge assets (e.g., O-RAN) and services including connected cars, private LTE, 5G, localization, content and media delivery, enterprise services, etc.

Of course, applicability of these different categories of edge compute services will vary per service provider based on the specific types of services and use cases each intends to offer. Carriers/CSPs, for example, are in a unique position because they own the physical edge of the network and are on the path between the clouds, colocation/data centers, and users/devices. Of course, cloud providers and content providers are also in a unique position to bring high performance edge compute and storage closer to users/devices whether via expanding their locations and/or hosting directly on the customer’s premises. Similarly, carrier neutral providers (e.g., co-location/data centers) are also in a unique position given their dense interconnection of CSPs, cloud providers, content providers, and SaaS application providers.

Figure 1.  Distributed data centers and edge services

Benefits of distributed data centers and edge services

Service providers that deploy a highly distributed data center and interconnect architecture will benefit from:

◉ Lower network latency and higher bandwidth transfer rates resulting from edge compute proximity.

◉ Flexible and intelligent placement of edge compute workloads based on service/traffic demands.

◉ Increased network efficiencies including reduced traffic backhaul.

◉ Distributed applications/workloads which tend to be more efficient, scalable, secure, and available.

◉ Digital differentiation including superior delivery of new and emerging digital experiences.

◉ New revenue/monetization opportunities associated with the new and emerging digital experiences.

Some CSPs are already actively moving in this direction on their own or in partnership with cloud and content providers. Service providers that haven’t started their transformation toward a highly distributed edge data center and interconnect architecture need to be aware that competitors intend to fill the void. To deliver superior network performance for the emerging digital experiences, service providers should start this transformation now.

Source: cisco.com

Continue reading

Perspectives on the Future of Service Provider Networking: Evolved Connectivity

The digital transformation in this decade is demanding more from the network. Multi-cloud, edge, telework, 5G, and IoT are creating an evolved connectivity ecosystem characterized by highly distributed elements needing to communicate with one another in a complex, multi-domain, many-to-many fashion. The world of north-south, east-west traffic flows is quickly disappearing. The evolved connectivity demand is for more connections from more locations, to and from more applications, with tighter Service Level Agreements (SLAs) and involving many, many more endpoints.

Further, enterprises are moving data closer to the sources consuming it and are distributing their applications to drive optimized user experiences. All these new digital assets connect and interact across multiple clouds (private, hybrid, public, and edge).

• 70-80% of large enterprises are working toward executing a multi-cloud strategy

• The number of devices requiring communications will continue to grow

- IoT devices will account for 50% (14.7 billion) of all global networked devices by 2023

- Mobile subscribers will grow from 66% of the global population to 71% of the global population by 2023

• More applications and data requiring network connectivity in new places

- More than 50% of all workloads run outside the enterprise data center

- 90% of all applications support microservices architectures, enabling distributed deployments

• STL Partners’ forecast of the capacity of network edge computing estimates around 1,600 network edge data centers and 200,000 edge servers in 55 telco networks by 2025

Today’s service provider transport network finds itself on a collision course with this evolved connectivity ecosystem. The network is highly heterogeneous, spanning access, metro, WAN, and data center technologies. Stitching these silos together leads to an explosion of complexity and policy state in the network that exists simply to make the domains interoperate. The resulting architecture is burdened with a built-in complexity tax on operations, which hampers operator agility and innovation. As application and endpoint connectivity requirements become increasingly decentralized with their functionality and data deployed across multiple domains, the underlying network is proving too rigid to adapt quickly enough. The status quo has become a complex connectivity mélange with application experience entrusted to network overlays running over best-effort IP, and innovation moves out of the network domain.

Our position: the network should operate like the cloud

As network providers, it’s time we started thinking like cloud providers. From the cloud provider’s perspective, their data centers are simply giant resource pools for their customers’ applications to dynamically consume to perform computing and storage work. Like the cloud, we should instead think of the network as a resource pool for on-demand connectivity services like segmentation, security, or SLA. This resource pool should be built on three key principles:

1. Minimize the capital and operational cost per forwarded Gb

2. Maximize the value the network provides per forwarded Gb (the value from the perspective of the application itself)

3. Eliminate friction or other barriers to applications consuming network services

The cloud operators simplify their resource pool as much as possible and ruthlessly standardize everything from data center facilities down through hardware, programmable interfaces, and infrastructure like hypervisors and container orchestration systems. All the simplification and standardization mean less cost to build, automate, and operate the infrastructure (Principle 1). More importantly, simplification means more resources to invest in innovation (Principle 2). The entire infrastructure can then be abstracted as a resource pool and presented as a catalog of services and APIs for customers’ applications to consume (Principle 3).

Our colleague Emerson Moura’s post later in this series focuses specifically on network simplification, however, we want to spend some time on the subject through the evolved connectivity and cloud provider lens. With connectivity spanning across domains, the most fundamental thing we can do is to standardize end-to-end on a common data plane to minimize the stitching points between edge, data center, cloud, and transport networks. We refer to this as the Unified Forwarding Paradigm (UFP).

A common forwarding architecture allows us to simplify elsewhere such as IPAM, DNS, and first-hop security. Consistent network connectivity means fewer moving parts for operations as all traffic transiting edge, data center, and cloud would follow common forwarding behaviors and be subject to common policies and tools for filtering and service chaining. And there’s a bonus in common telemetry metrics as well!

Our UFP recommendation is to adopt SRv6 wherever possible and ultimately IPv6 end-to-end. This common forwarding architecture provides a foundation for unified, service-aware forwarding across all network domains and includes familiar services like VPNs (EVPN, etc.) and traffic steering. More importantly, connectivity services may become software-defined. Moving to a UFP will lead to a massive reduction in friction and the network can make a true transition from configuration-centric to programmable, elastic, and on-demand. Imagine network connectivity services like pipes into the cloud or some edge environment moving to a demand-driven consumption model. Businesses no longer need to wait for operators to provision the network service. Operators would expose services via APIs for applications and users to consume in the same manner we consume VMs in the cloud: “I need an LSP/VPN to edge-zone X and I need it for two hours.” And as user and application behaviors change and require updates to the services they’re subscribed to, the change is executed via software and the network responds almost immediately.

The relationship between network overlay and underlay will also benefit from standardizing on SRv6/IPv6 and SDN. Today the overlay network is only as good as the underlay serving it. With a unified forwarding architecture and on-demand segment routing services, an SD-WAN system could directly access and consume underlay services for improved quality of experience. For flows that are latency-sensitive, the overlay network would subscribe to an underlay behavior that ensures traffic is delivered as fast as possible without delays. For the overlay networks, the SRv6 underlay that is SDN controlled provides a richer connectivity experience.

Conclusion: from ‘reachability’ to ‘rich connectivity’

Rich connectivity means the network is responsive to the user or application experience and does so in a frictionless manner. It means network overlays can subscribe to underlay services and exert granular control over how their traffic traverses the network. Rich connectivity means applications can dynamically consume low latency or lossless network services, or access security services to enable a zero-trust relationship with other elements they may need to interact with.

We believe service providers who adopt the Unified Forwarding Paradigm and embrace SDN-driven operations and consumption-based rich connectivity service models will transform themselves into platforms for innovation.

Source: cisco.com

Continue reading

Three Reasons to Prepare for Your Next Broadband Infrastructure Investment

Two years after the COVID-19 pandemic proved the internet invaluable with so many of us working, shopping, educating our children, and accessing health care – all from home – we’re still faced with a digital divide between those who have access to broadband Internet and those who don’t. Efforts by service providers to upgrade their network infrastructure to handle increased load has been both rapid and impressive, but more is needed. There remains a significant percent of the population lacking sufficient broadband to fully participate in the digital economy and society. This must change, but how?

There are three areas we need to focus on if we hope to expand much-needed internet access to those who lack it: bridging the digital divide, locating and securing available funds, and improved expertise and planning. But first let’s examine the numbers as related to the ever-increasing value of the internet and those who lack full access to its benefits.

In March 2022, Cisco released its Global Broadband Index Report surveying more than 60,000 workers across 30 different markets about their home broadband access, quality, and usage. Below are a few stats that caught my eye:

• 84% use the internet at home for four or more hours each day

• 78% agree that everyone should be able to securely connect to fast and reliable internet regardless of location

• 65% believe access to affordable and reliable broadband will become a major issue in the future

• 58% state that they were unable to access critical services during lockdown due to unreliable internet

In the United States, there are about 20 million who lack access to high-speed broadband services, and some 17 million school children don’t have internet access at home. Ensuring broadband access and affordability are critical to closing the digital divide. The problem is significantly greater in rural areas, where about 19.3% of the total U.S. population resides. In rural areas, the cost to build and deliver broadband internet services are much higher due to lower population density, harsher environments, and other factors.

Bridging the digital divide is a great idea, but who’s going to pay for it?

The good news is the U. S. Federal Government is providing another $62 billion in grant dollars on top of the $38 billion pre-pandemic grants for broadband internet build outs. Along with wireless expansion, the government’s funding focus has also shifted to fiber and this new money, provided by the Infrastructure Investment and Jobs Act (IIJA), is part of a five-year program. This funding makes it easier to scale your network infrastructure because with the government helping to fund the last mile, it allows service providers to upgrade their middle mile as well, to support additional users and increased bandwidth. Using federal grants helps you build up the network backbone that might have otherwise been too costly.

The additional $65 billion seeks to address the digital divide and specifically focuses on groups of people that are “underserved” and “unserved” as defined in the law. By underserved we’re talking about those who are served by lower speed broadband that doesn’t exceed a certain threshold, for example 100 Mbps download by 20 Mbps upload. Unserved refers to those having internet speeds below 25 Mbps download by 3 Mbps upload.

Below are some of U.S. federal programs that are in the middle of funding broadband deployments, waiting on program rules, or still waiting for funding to be appropriated.

The most significant grant program for both public and private entities is the Broadband Equity Access and Deployment (BEAD) with $42 billion set aside for last-mile broadband deployment. This is where both public and private entities can win grant money to deploy broadband to the unserved and underserved. This also means there’s a need for new affiliations like Public-Private Partnerships (PPP) which are contracts between a private party and a government agency to offer a public asset or service such as municipality-provided broadband through a partnership with an internet service provider. PPPs make obtaining right of ways much easier because you’re directly partnering with cities and counties.

PPPs provide many benefits to public entities such as Wi-Fi access and improved broadband for schools, and they help scale the economy because you’re adding subscribers who will consume content, shop online, and seek out other internet-based services. They need ISP partners in order to deliver these benefits.

Knowledge and expertise are key to success

Yet, funding alone is not enough to close the digital divide. You need to determine the right combination of solutions for a particular use case, region, and implementation to get the results you expect. This may require extensive expertise and answering all the questions ahead of time has proved difficult—until now.

Cisco is delivering a new generation of network infrastructure technologies and innovation that provide more capacity and greater flexibility at a lower cost per subscriber, helping to import the economics of the Internet. Here are a few examples:

• Capacity at lower cost with Cisco Silicon One and Routed Optical Networking

• Lower OpEx with simplified networks and automation

• Improved sustainability and flexibility for remote deployment scenarios

• Flexible consumption and payment methods that enable you to pay as you grow

These technologies can make it much easier and less expensive for service providers to expand their offerings in rural regions. Now you can experience them up close and in person at the Cisco Broadband Innovation Center located in Research Triangle Park, NC. This is a perfect opportunity to expand your knowledge and expertise in rural broadband development. Not only will you see how to model and address your own specific use cases, but service providers can also focus on how to be more prepared for grant applications by understanding ways to benefit from Cisco’s next-generation network innovations. And it’s important to remember that federal grants will be awarded to the service providers with the best solutions, so it’s critical to work with a proven company at the forefront of rural broadband development.

Source: cisco.com

Continue reading

Private 5G Delivered on Your Terms

Private 5G is a hot topic as enterprises seek industrial wireless IoT solutions to modernize their business for increased productivity and efficiency. In newly emerging cases, wired solutions are not enough, such as in sectors like hospitality where “protected buildings” limit running new cables. For manufacturing and other industries, critical processes like robotic assembly of essential parts (jet turbines, automotive transmissions, or medical devices) and autonomously guided vehicles need a very low-latency, high-reliability solution like private 5G, particularly when those processes co-exist with humans.

On Feb. 3, 2022, we introduced Cisco Private 5G as part of “The Network. Powering Hybrid Work” launch. During this event, we shared our view that the future of hybrid work expands beyond people collaborating with people and now includes people collaborating with things. We now begin to share many attractive use cases for introducing private 5G alongside Wi-Fi into the enterprise networks. As we move towards Mobile World Congress (MWC) at the end of February, we’ll reveal more about our private 5G go-to-market strategies and discuss exciting new opportunities for our global service provider partners.

Connecting everyone and everything

Wireless networking and IoT will transform industries by digitalizing Operational Technology (OT) just as profoundly as the cloud transformed Information Technology (IT). And enterprises are already waiting in anticipation, with a 2021 GSMA Intelligence market report showing that a combination of digital transformation and labor shortages is expected to see enterprise IoT connections quadruple to 23.6 billion by 2030, accounting for 63 percent of total IoT connections. With all the pieces in place, companies with a strategy to converge their IT and OT operations will experience significant gains in productivity and efficiency, creating a major competitive advantage.

With the convergence of IT and OT, hybrid work becomes about connecting everyone and everything. Delivering IoT at scale is just as important as connecting people, allowing hybrid workers to gain access to sensors, monitors, robots, and more. Our vision of the future of work is built on wireless through a combination of private 5G and Wi-Fi, where enterprises can modernize, automate their operations, and benefit from the resulting productivity gains.

But making the change is not easy. There are all kinds of confusing options right now, so where do you begin? We can help by delivering a private 5G solution on your terms.

What separates Cisco Private 5G from the rest?

We believe the competitors are going about it the wrong way. They would have you adopt a complex, carrier-centric 5G solution that’s radically different from what you already know and use. Some even ignore Wi-Fi entirely. As the top enterprise networking, wireless, security, Industrial IoT, and collaboration IT vendor, we know how to build a solution that fits your enterprise needs, where Cisco Private 5G is integrated with Wi-Fi and existing IT operations environments. This makes your transformation easy, and we’re the only vendor to empower enterprise customers to extend what they already own and understand into new possibilities.

We know the many different technology choices and complexity of operating such an environment can make it difficult to start. It’s hard to commit financially to a new technology with so many uncertainties. Even the most visionary business leaders may hesitate to avoid making a wrong decision. With Cisco as your partner, you can feel confident you’ve made the right choice because our private 5G solution is ‘Simple to Start’, ‘Intuitive to Operate’, and ‘Trusted’ for enterprise digital transformation.

Simple to start

◉ The journey begins with a qualified business consultation.

◉ You don’t have to choose between 5G and Wi-Fi – you can use both, protecting your current investments and strategies.

◉ With your business goals in hand, a premium partner will perform a site survey to scope the necessary networking and radio coverage to support the intended IoT use case(s).

◉ Cisco Private 5G networks will be Cisco Validated Designs (CVD).

◉ Our “pay-as-you-use” subscription model means that you and your deployment partners will have minimal up-front infrastructure costs, so no matter how small the start or how massive the goal, costs remain in line with value. By comparison, traditional purchasing models force you to “spend a lot and wait” for productivity or profitability.

Intuitive to operate

◉ A simple management portal integrates and aligns with existing enterprise tools. We handle all the complexities of the 3GPP mobile network stack.

◉ Enterprise IT teams get a complete picture of their network and devices. You can maintain policy and identity across wired and wireless network domains for simplified operations.

◉ AI/ML-based management tools can identify unexpected behavior patterns and potential issues, making it easy to proactively take intelligent actions. Intelligent analytics increase effectiveness, minimize exposure time and reduce damage.

◉ Many problems in the network stem from outdated software, and nearly all are avoidable. As a continuously improving service, our private 5G software releases are automatically maintained from the cloud, ensuring the latest functions and security updates are in place.

Trusted

◉ As the No. 1 provider for connectivity, collaboration, industrial IoT, and IoT-connected cars, enterprises trust our technology, products, and services.

◉ Cloud-native architecture allows Cisco Private 5G to flexibly support different deployment models. Components may reside in the cloud, distributed edge, or on premises depending on needs for extra reliability or data privacy.

Source: cisco.com

Continue reading

How Cybersecurity Leads to Improved Sustainability

After managing the sudden switch to remote work in 2020, organizations are making a more permanent transition into the flexible hybrid workforce. The Federal Bureau of Investigation (FBI) found that cybersecurity attacks rose by 3-4 times from the transition to remote work in 2020. In addition, experts predict that ransomware will cost the world up to $20 billion in 2021 and is expected to be a greater concern with the hybrid work model. As a result, you’ll need to rapidly scale your security to account for the massive influx of remote and hybrid workers while simplifying and unifying your IT systems.

While implementing security controls is increasingly important, this also means more hardware appliances and virtual instances to secure different parts of the infrastructure. All this extra equipment and instances means more power consumption and heat dissipation, leading to adverse impacts on the environment. We’re taking steps to address this situation. There are a couple of ways we’re approaching this. Cisco products have security features which are built into our switches to prevent the need for separate security appliances.

Innovative methods to detect malware within encrypted layers

As an example, let’s look at the scenario where a traditional method of securing the deployment is used for decryption and identification of malware. As shown in Figure 1, you would first need to decrypt the traffic, then apply analysis (inspection / anti-malware), and finally encrypt the traffic again. The resulting power consumption is shown in Table 1.

Figure 1. Traditional deployment using Secure Sockets Layer (SSL) inspection

Table 1. Power consumption in a traditional deployment

As displayed in Table 1, the total power consumption for all the devices is close to 9500W. In the sustainable method we offer, the Cisco Secure Network Analytics (Cisco Stealthwatch) components like Stealthwatch Management Console (SMC) and Flow Collector (FC) are virtualized, which can be deployed on the existing X86 servers without needing the additional devices as shown in Figure 2.

Figure 2. Innovative and sustainable option using Cisco Secure Network Analytics (Stealthwatch)

In this scenario, Stealthwatch’s patented technology allows analysis of encrypted traffic without decryption. The ETA module in the catalyst switch provides Stealthwatch with the extra information for the analysis of the encrypted traffic without decryption.

Table 2. Power consumption using Cisco Secure Network Analytics with Catalyst switches

As the Stealthwatch components are virtual, they can be deployed in an existing X86 server, and the power consumption is minimal as compared to the dedicated appliances.

Another way Cisco caters to sustainable cybersecurity is by ensuring that the functionalities such as load balancing, packet broker functions, switching, and routing are all included in a single appliance.

Tables 3-4 highlight the difference between the traditional method and innovative new method for total power consumed for identifying malware in encrypted traffic:

Table 3. Traditional method power consumption

All the functionalities listed in Table 3 are now available in a single switch such as the Nexus NX 9300, which has the following power consumption:

Table 4. Power consumption using Cisco Nexus

This shows that there are alternate methods to detect malware within encrypted layers which are more sustainable, efficient, and less expensive compared to traditional deployments.

Source: cisco.com

Continue reading

O-RAN Plugfest 2021: Making 5G Adoption Cost-Effective for Brownfield Providers

5G adoption is causing mobile networks to grow at unprecedented rates. This brings with it significant new business opportunities but can also increase the complexity and cost of deployment and operations. An intelligent, programmable network enables communication service providers to take advantage of the growth that 5G offers while streamlining their operations to maximize return on investment.

Cisco is addressing these challenges head-on with our industry-leading NCS 500 portfolio. New enhancements enable simultaneous support of both traditional architectures RAN and open, virtualized RAN, with full interoperability.

Challenges for Brownfield Operators

Using an open architecture provides many cost benefits to service providers, leveraging a Commercial Off-the-Shelf (COTS) based infrastructure, automation features, and an open ecosystem to promote a competitive market.

While it is relatively easy for greenfield service providers to adopt 5G open RAN interfaces and architectures, it is extremely difficult for brownfield operators who have already widely deployed 4G.

One of the main challenges for brownfield operators is the lack of interoperability available when using legacy RAN interfaces with an open RAN solution. Replacing all existing 4G CPRI radios in the network with eCPRI based radios is not feasible, which makes adoption of an open RAN and DU virtualization very difficult.

When 4G and 5G are being deployed in the same cell site but running on two different architectures (proprietary 4G eNB and virtualized open 5G DU), it is cost-prohibitive for the provider.

Brownfield Interoperability

Cisco has been working with various Standard Development Organizations (SDO) to define an open and fully interoperable 5G RAN architecture.

Through collaboration, we were able to create a solution that could seamlessly integrate legacy radios on Cisco’s Converged SDN Transport architecture, while also standardizing the specifications to make it fully interoperable.

As a contribution to the O-RAN ALLIANCE, we drove the creation of an open Fronthaul gateway specification (O-RAN.WG7.FHGW-HRD.0-v02.00) to address deployment challenges for brownfield providers. This specification allows legacy CPRI based radios to communicate with open RAN 7.2x eCPRI based DU.

Cisco NCS 540 Fronthaul Routers, a key element to the Converged SDN Transport architecture, provide an open and programmable solution to host RAN network functions like Fronthaul Gateway (FHGW) and RAN resource configuration.

O-RAN PlugFest in India

We were able to demonstrate this successful integration during the O-RAN Global PlugFest 2021 hosted by Bharti Airtel in India. Through our multivendor demo, Cisco NCS 540 platform hosted the FHGW network function provided by VVDN technologies and verified the solution using Keysight Open RAN Studio and Signal Analyzer.

Fig: O-RAN PlugFest demo setup at Bharti Airtel

Cisco’s solution approach is vendor agnostic, helping service providers to consolidate functions, optimize network inventory, and reduce the cost of deployment.

FHGW allows seamless integration of legacy radios to ORAN 7.2x DU enabling operators to adopt ORAN architecture for existing 4G networks. Although the FHGW is deployed at the cell site, it can provide approximately nine times the optimization to transport bandwidth in a centralized RAN architecture.

Open hardware and API definition helps overcome proprietary dependencies of RAN functions and allows seamless integration in a multi-vendor environment.

A programmable platform promotes innovation and protects investment. The same platform can be programmed to function as a Fronthaul MUX / De-MUX for shared cell deployment.

Joint European O-RAN and TIP PlugFest

Cisco also participated in the O-RAN European PlugFest 2021 hosted by TIM OTIC laboratory in Torino, Italy. We were challenged to build two end-to-end, interoperability solutions leveraging multi-vendor O-DU / O-CU radio software components and O-RU elements for both 4G (LTE B7) and 5G (n3, n78).

In both cases, the NCS 540 Series Router was used to provide packet-based fronthaul to connect O-RU to O-DU and to distribute timing and synchronization taken from the TIM network to O-RU using PTP and SyncE protocols according to the O-RAN LLS-C3 model.

We successfully demonstrated compliance to O-RAN transport characteristics in multivendor environments including time synchronization, packet fronthaul, latency and jitter, telemetry, and packet-based fronthaul network automation.

Powering Open, Virtualized RAN in Brownfield Deployments Today

As service providers continue to deploy 5G, the benefits of adopting a virtualized RAN are becoming increasingly evident. By providing secure and zero-touch infrastructure over a resilient transport architecture, we can simplify the deployment of virtualized DU servers at cell sites.

Virtualized infrastructure requires the following interfaces for management and zero-touch operations:

1. Out of Band (OOB) interface for server management and infrastructure onboarding

2. The management interface for server, radio, and virtual DU OAM

3. Management interfaces for Kubernetes or virtual machine infrastructure and container management.

Secure infrastructure using well-defined quality of service (QoS) is key to ensuring traffic protection and traceability in a multivendor environment. Cisco NCS 540 Series Routers are based on proven hardware and software, which is necessary to provide a secure environment for cell site virtualization.

A mature QoS architecture provides traffic separation and defined service protection. Secure and encrypted algorithms support SSH, AAA, DHCP, ZTP, SNMP, IPv4/IPv6, MACsec, IPsec, gRPC, MPP, and rich access control list features.

Cisco secure zero-touch provisioning enables a secure automation framework not only for the router but also for virtualized DU and open Radio deployment at the cell site.

Programmability and Automation

Cisco offers a flexible and programmable architecture that service providers can begin to take advantage of today. With rich streaming telemetry support, networks can be monitored with streamed configuration and operational telemetry data on a centralized data virtualization tool. The platform provides extensive support for YANG and IETF Models, and OpenConfig.

With open management interfaces and APIs, we can enable end-to-end network management functions through the operational lifecycle of the brownfield cell site. Cisco offers off-the-shelf and customized Cisco Network Services Orchestrator (NSO) function packs to automate the provisioning of each mobile network domain including radio, virtualized functions, and transport.

Committed to Continued Innovation

Cisco continues to focus on technological enhancements that will help brownfield service providers reduce deployment costs. By providing a transport infrastructure that is open, programmable, secure, and verified against standards, we are empowering providers to seamlessly adopt virtualization and open, disaggregated RAN solutions in multivendor environments.

Source: cisco.com

Continue reading

Service Opportunities for Midsize/Small Service Providers Are Key to Competitive Differentiation

Competitive intensity across the service provider landscape has increased significantly over the past few years. While most pronounced in the large tier 1 service provider segment, the level of competition has recently picked up in the midsize and small communication service provider market. The competitive landscape now includes a broader set of providers such as the following:

◉ Cable providers broadening their portfolio of services beyond traditional video services and expanding into new areas like wireless

◉ Gaming companies offering their content as a service in conjunction with cloud and/or connectivity providers

◉ Electrical cooperatives emerging as the latest new entrants to the communications market as they look to diversify their business and bring broadband access solutions to rural areas

◉ Cloud providers playing an increasing role in hosting small-medium business workloads

To maintain competitiveness, midsize/small service providers must innovate at the service level and focus on key customer segments where they can provide differentiated value. This innovation will include improving the service enablement process to drive efficiencies and accelerating the time to market for new service offerings.

Improving the Service Enablement Process

Most midsize/small service providers interviewed as part of IDC’s SP Digital Readiness Survey are primarily focused on expanding their existing set of services to new customers and broadening their partner channel; these providers see such initiatives as key to expanding their customer base. However, over time, these providers will increasingly look to develop compelling new service offerings to customers. In fact, nearly 40% of midsize/small service providers indicated that the rollout of new services is an essential component of their growth strategy. These providers are either evaluating, planning, or executing a strategy to deliver new services to an expanding base of customers (see Figure 1).

Figure 1 – Midsize/Small Service Provider Growth Strategy

Question – What role does growing your business through adding new services, entering new markets, or targeting new types of customers play in your business strategy?

n = 201

Source: IDC’s SP Digital Readiness Survey, 2021

As midsize/small service providers look to offer new services to market, they are equally focused on making improvements to service enablement and provisioning by targeting process efficiencies and expanding their service portfolio to drive profitable growth. As part of this effort, midsize/small service providers are in the process of upgrading their internal systems with a focus on operational functions critical to stimulate new sales such as:

◉ Billing (monetization)

◉ Customer order management

◉ Pricing models

◉ Partner enablement

IDC believes that data accuracy, the appropriate pricing models, the incorporation of analytics at every step of the service creation process, and work with critical partners (app developers, compute/storage providers, and channel partners) are all essential steps in supporting the efforts of midsize/small service providers to offer new compelling services to their customer base.

New Service Priorities

On the service portfolio side, there are a collection of offerings that midsize/small service providers will emphasize to satisfy customer demand for secure and reliable connectivity solutions. In the enterprise segment, private cellular services, cloud-based network services and managed services will be key areas of focus for midsize/small service providers.

According to IDC’s SP Digital Readiness Survey, midsize/small service providers indicated that private cellular services, network as a service, and managed services were their top three service priorities (see Figure 2).

Figure 2 – Priorities for Expanding Existing Service Portfolio

Question – Which of the following services represent priorities to expand your services portfolio? (Select all that apply.)

n = 147 customer-facing and internal services respondents

Source: IDC’s SP Digital Readiness Survey, 2021

Private Cellular Services. 48% of midsize/small service providers cited private cellular as their top service priority; they should also look to add incremental value on top of their connectivity solutions by partnering with ISVs and bundling industry-specific solutions that address requirements of companies in specific industry segments. IDC believes there is a broad partner ecosystem developing to service the needs of midsize and small enterprises, comprised of communication service providers, managed service providers, ISVs, VARs, and cloud providers.

Network as a Service. – While network as a service (NaaS) is still in its infancy, enterprises see value in the ability to quickly procure, deploy, manage, and retire networking assets. NaaS will enable customers to select the hardware and services to transform their network, which allows for faster access to new technologies with less risk to existing operations, improved management, faster refresh cycles, and the ability to scale with a few clicks.

Managed Services. Given the avalanche of new technologies that enterprises are evaluating, the complexity associated with implementing and operating these solutions will drive demand for managed services. This will particularly be the case in the midsize and small enterprise market segment and remote branch offices of larger enterprises where there is a lack of in-house technical expertise. IDC believes that these companies will prefer to transfer the cost of network ownership to experienced third parties with scale.

Source: cisco.com

Continue reading

Cisco Silicon One Enables the Best Routers

It’s not every day you get to work on products that continue to evolve so quickly that before you finish talking about one device the next generation comes out. However, with Cisco Silicon One™ that’s exactly what we’ve done.

We recently announced our 19.2 Tbps P100 piece of routing silicon and I wanted to spend some time going over what it means from a system perspective.

Cisco Silicon One P100—In a class of its own

There are several types of routing silicon available on the market today from third-party silicon providers to full system vendors. This silicon covers a variety of market needs but broadly speaking routing silicon breaks down into silicon that is built for core, peering, and aggregation markets versus those focusing on broadband aggregation. If we take a look at all the silicon currently available on the market, it’s clear that Cisco Silicon One is in a class of its own, and still today there’s no routing silicon that achieves higher bandwidth, even than our original Q100 announced back in 2019. Since then, we rolled out the Q200 with higher bandwidth and lower power consumption than the Q100. Today, less than 24 months from our initial Q100 launch and just 12 months from our Q200 announcement, we released the P100, further increasing our lead over the competition. We believe the Cisco Silicon One P100 is 2.6 times higher ethernet bandwidth than other routing silicon in the market.

The Cisco Silicon One P100 builds upon the great foundation that we created with Cisco Silicon One but continues to add features, buffering, scale, and programmability enhancements while growing the bandwidth.

Figure 1. Routing silicon available in 2021

Because Cisco Silicon One devices can flexibly assign ports to be generic ethernet or a fully scheduled fabric, the Cisco Silicon One architecture enables optimized fixed boxes and modular systems.

Figure 2. Cisco Silicon One – Common architecture across form factors

This capability is unique in the industry, and it allows us to offer products from a fixed box measuring just one rack-unit with a single piece of silicon, to a massive modular chassis with many pieces of silicon, to a fully disaggregated chassis with even more pieces of silicon. This is all accomplished with a common architecture, SDK, and P4 forwarding code.

This means that when we come out with a new piece of routing silicon, we enable our customers to enjoy benefits across their portfolio and network.

If I try to oversimplify the impacts of the Cisco Silicon One P100 in the market, we see that:

◉ P100 enables high bandwidth fixed boxes with 6–12 times less silicon. This leads to massive power, space, and cost savings while simultaneously reducing latency.

◉ P100 enables modular systems that are more than 2 times higher bandwidth than anything else available on the market, with the industry’s first 36×800, 28.8 Tbps modular line cards, while significantly improving power efficiencies of modular systems.

Figure 3. Cisco Silicon One P100 vs. competition

Fixed box advantages

Because we can use a single piece of silicon to create a 19.2 Tbps, 24x800G, or 48x400G router we can drive a level of efficiency unheard of in the industry today. The next best piece of routing silicon on the market tops out at 7.2 Tbps.

This means that you need to use between six and 12 devices to build an equivalent system. This difference means Cisco Silicon One enables a smaller, lower latency, more power-efficient router at the system level.

Figure 4. Cisco Silicon One P100 fixed box advantage

Modular line card advantages

Modular systems are built with multiple pieces of silicon. Based on limitations on the faceplate, Printed Circuit Board (PCB), optics form factors, silicon, and orthogonal connector densities, most system vendors produce 36x400G line cards with customer-facing 14.4 Tbps of bandwidth.

Using our advanced architecture, coupled with 100G PAM4 Serializer/Deserializer (SerDes) technology, Cisco Silicon One P100 enables line cards to push through previous limitations in front panel optics, PCB technologies, and orthogonal connectors, resulting in line card hardware that’s two times higher bandwidth than other modular line cards. When combined with our 25.6 Tbps fabric element, the Cisco Silicon One G100 is 2.6 times higher bandwidth than other fabric elements, so customers can build modular routers that are up to three times higher bandwidth.

Table 1. Cisco Silicon One P100 modular system bandwidth

The bandwidth increase coupled with the power efficiency of Cisco Silicon One drives significant power efficiency gains compared to all other routing silicon in the market.

Figure 5. Cisco Silicon One P100 modular line card advantage

Building the future of the internet

Cisco Silicon One P100 enables the highest bandwidth and most efficient fixed box routers based on a single piece of silicon. It also enables the highest bandwidth modular line cards that are two times higher bandwidth than what can be built with our competitors’ silicon.

Source: cisco.com

Continue reading

Redefining the Cost Models for APAC Broadband Operators

In a market approaching 5.7 billion mobile subscriptions in 2021, broadband can sometimes feel to play second fiddle in Asia & Oceania (Omdia). However, 670 million broadband subscriptions are nothing to be sniffed at – especially in a region with hundreds of millions more underserved or unserved at all.

More Info: 350-901: Developing Applications Using Cisco Core Platforms and APIs (DEVCOR)

The global pandemic only exacerbated the need for high-quality fixed broadband services. For consumers, this was driven by the need to access digital healthcare, education, and entertainment services – in 2020 alone Omdia calculates Asia and Oceania OTT video subscriptions rose by 22 percent to more than 550 million. For service providers, the massive rise in this video and digital content traffic means they need more scalable broadband networks to deliver the best broadband services and to better supplement mobile networks which are also under strain from rises in data-intensive video and digital services. Operators also need their infrastructure deployments to be more cost-efficient to connect the millions still to be connected in the Asia & Oceania region.

The Asia & Oceania broadband subscribers are generally concentrated in high broadband penetration markets like China, Japan, & South Korea, but there is plenty of potential in low penetration countries like India & Indonesia with broadband penetration rates below 20%.

This pressure on operators to build out and improve the operations of their broadband networks comes at a time when they are moving towards distributed and cloud-native network architectures, as part of the latest iteration of Network Functions Virtualization (NFV) and software-defined networking (SDN). The development of these technologies was originally focused on core network functions, but are now becoming more common closer to the edge.

One such development is in Broadband Network Gateways (BNGs). Traditionally BNGs have been hardware-centric solutions, appliances with tightly coupled hardware and software. If operators needed to scale a deployment they would deploy more BNG appliances. To keep up with anticipated demand this model necessitates service providers to plan and deploy BNG nodes months or years in advance of expected demand.

Cloud-native BNG solutions promise to change these cost dynamics in two key ways:

◉ Disaggregation of hardware from software

   ◉ Provided operators have the deployed hardware infrastructure in place they can spin up BNG software licenses as required to meet demand, reducing upfront investment costs, and time to revenue for BNG solutions.

   ◉ There is the potential to re-purpose existing BNG hardware appliances or use commoditized hardware to maximize existing BNG investments, rather than having to rip & replace all existing hardware.

◉ Implementation of Control /User Plane Separation (CUPS) architecture

   ◉ This allows operators to simplify BNG configuration by only configuring a handful of BNG control plane nodes to manage the potentially 100s of BNG user plane BNG nodes that make up the network.

   ◉ This leads to greater levels of network automation, supporting streamlined OPEX, and greater levels of network optimization to provide a better quality of service for end-users.

Figure 2 shows an example of what a cloud-native BNG solution deployment could look like. From these changes in cost dynamics, Omdia believe there is scope for total cost of ownership (TCO) savings vs traditional deployment models in the region of 10-30% over a five-year period.

Figure 2. Example of distributed deployment and a cloud-native BNG stack

To achieve these savings operators do need to prioritize investment in supporting skillsets to manage and automate cloud-native BNG solutions. These investments will in time make a clear difference to the deployments themselves and the wider business as operators look to orchestrate and automate cloud-native network solutions across network domains. Telenor is an example of an operator who is beginning to reap the benefits of broad skillset and organizational investment in the context of their network transformations. In 2019 Telenor reskilled approximately 6.4% of its employees, investing in virtualization, cloud, automation, and other adjacent technical skillsets. This supported an OpEx decrease of 7% YoY on a constant currency basis in 2020 (excluding figures from Telenor’s acquisition of Finland’s DNA).

The Omdia “Evolution of the BNG in Asia and Oceania” white paper focuses on the changing nature of BNG solutions and what they mean for operator cost models and the ability to develop services to support new revenue streams.

Continue reading