Why do we need a new network architecture to connect data centers | Knowledge of the data center

As enterprises accelerate their digital transformation efforts, they are increasingly turning to cloud applications and services running on servers located in offsite data centers, including public cloud, hosted private cloud, and cloud services. multi-tenant colocation data centers.

To deliver the sophisticated connect and interconnect capabilities required, the many participants in this evolving cloud ecosystem need a new network architecture, which not only interconnects edge and core cloud data centers, but also gives businesses more control over how they connect to cloud services and deploy new applications. Using cloud data centers with rich interconnect ecosystems provides several important benefits for businesses, including improved security, lower transport costs, higher performance, lower latency, and increased flexibility.

Figure 1. The many players in the cloud ecosystem require a new network architecture

Newest from Equinix Global Interconnect Index and TeleGeography Internet card forecast a compound annual growth rate of 44% for global data center interconnection and predict that interconnect bandwidth will be 15 times greater than Internet bandwidth by 2024. For Network and Center Operators companies looking to capitalize on this opportunity, three fundamental networking capabilities deserve special attention: connect, interconnect, and data center automation.

Connect data centers to maximize fiber capacity at the lowest cost per bit

Cloud applications require the transport of large amounts of data between data centers, all of which must be replicated using synchronous and asynchronous backup between primary, secondary, and tertiary data centers. This applies to both business continuity and disaster recovery onsite and offsite, and often across regions.

For operators, achieving this can be difficult. To do so, they must plan for greater network resilience through regional and international route diversity and deploy agile, scalable, and resilient optical mesh networks and point-to-point DCI solutions that maximize fiber capacity and reach the lowest cost per bit.

Interconnecting Data Centers in the Cloud Ecosystem

Equally important is the ability to interconnect data centers with multiple service providers, cloud providers, and ISPs. This involves routing traffic between multiple networks and connecting customers to cloud services, applications, and workloads wherever they are.

DELLINGER Rodney Head Shot 2020 Color.jpeg

Rodney Dellinger, CTO and Head of Architecture for Nokia’s Webscale Business

Routing traffic from one network to another and between data centers of different carriers is called peering. Peering allows two networks to connect and exchange traffic directly without having to pay a third party to route the traffic over the Internet. In some cases, this involves multiple networks, each peering with the other to move traffic from source to destination; for example, from a client desktop to an application running in a primary cloud data center.

To meet these interconnection requirements, the implementation of secure peering is essential for network operators, as is the deployment of data center gateway and IP routing solutions that provide comprehensive network routing functionality. IP edge such as segment routing, traffic engineering, and network-based DDoS mitigation.

Flexible and resilient data center interconnection through automation

Automating the connection and interconnection of data centers is the third essential requirement for enabling a vibrant cloud ecosystem. Today’s networks are static, multi-layered and expensive, and need to be further integrated and automated to provide flexible and resilient connectivity between edge and core data centers. Automation of data center connection and interconnection should be optimized and efficient, with the ability to use multiple infrastructures, such as lighted or dark fiber, managed wavelengths and IP/optical networks multi-technology.

The benefits of network automation for customers are considerable. This gives them the control they need to view applications, access services, and spin up workloads when needed to meet their needs in any location, and they don’t have to contact the operator of network and request more capacity in a specific data center or between data centers.

By integrating customer web portals with network interconnect platforms, carriers can automate the configuration, provisioning, and deployment of network resources to make the entire process as seamless as possible.

Operators have an important role to play in creating a highly interconnected data center infrastructure to deliver the next generation of cloud applications. By offering advanced data center interconnection capabilities, grounded in network automation, they can deliver exceptional experiences to their customers while enabling digital transformation and the digital economy.


Rodney Dellinger is Technical Director and Head of Architecture for Nokia’s Webscale business and has spent 24 years in the telecommunications industry in a variety of roles ranging from network architecture and software engineering to leading business development and sales engineering.

Ramon J. Espinoza