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Community Blog Apsara Luoshen – A Cloud-Native Network Born from the Cloud

Apsara Luoshen – A Cloud-Native Network Born from the Cloud

In this article, Zhu Shunmin, Head of Alibaba Cloud Network Services, explains Apsara Cloud Network System and how it's evolving.

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Zhu Shunmin, Head of Alibaba Cloud Network Services

According to its narrow definition, cloud-native entails microservices, containers, continuous delivery, and DevOps. However, I believe that the wide application of cloud computing is redefining cloud-native, which may become more inclusive. In a broad sense, cloud-native simply refers to any software, hardware, or architecture intended for cloud use. As a typical and core Infrastructure as a Service (IaaS) product of cloud computing, the cloud network was born from the cloud and for the cloud. In fact, it is the real cloud-native network

Cloud-Native Apsara Cloud Network System

Apsara Cloud Network System is an in-house cloud-native system built for the cloud through the support of other cloud capabilities. It represents the unique way we, at Alibaba Cloud, develop cloud-native technologies. Apsara Cloud Network System encompasses capabilities such as large-scale software-defined network (SDN) control, Sailfish software-hardware integrated forwarding and CyberStar elastic.

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Alibaba Cloud Network Architecture

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In-house SDN Controllers: Removing Concerns Over Size and Complexity

SDN controllers play a key role in the efficient management of a large data system. In the trend of cloud-native applications, a great number of users are using Docker and Kubernetes in the cloud. It poses a huge challenge to the size and density of cloud networks. SDN controllers enable users to accommodate large amounts of instances in a virtual private cloud (VPC) and meet their needs for highly densified elastic network interfaces (ENIs) on an Elastic Compute Service (ECS) instance. Also, given the scale of public cloud instances, management efficiency is critical. Cloud-native SDN controllers are built to take care of these issues and relieve users from worries about their data systems' massive size and complexity.

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In-house Sailfish Software-Hardware Integrated Forwarding Platform: Removing Concerns Over Performance

The Sailfish hardware forwarding platform is built on a hardware-software integrated architecture based on high-performance forwarding components such as dedicated programmable chips and intelligent network interface controllers (NICs). The platform is designed to enable high-performance data forwarding between hosts and primary gateways. The platform has been widely deployed in many cloud network applications in combination with core modules such as XGW, MoC, and ALI-LB.

XGW: In-house High-performance Gateway with Integrated Software and Hardware

The development of network devices often involves both software and hardware because they work together in a complementary way toward higher flexibility and performance. Before the birth of XGW, specific customers requested a hybrid cloud by using connections over Express Connect circuits with a jaw-dropping bandwidth of 10 Tbit/s.

Considering reasonable redundancy, nearly a hundred high-performance x86 servers were required, leading to unacceptable costs and operational efficiency. It encouraged us at Alibaba Cloud to develop XGW, a high-performance gateway with integrated hardware and software.

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CyberStar: Enabling Flexible Customization and Making Investment More Effective

As more large enterprises migrate their business to the cloud, they often require higher elasticity to support scenarios such as live streaming and large promotional events. These scenarios frequently require a drastic capacity increase that traditional architecture built on x86 servers cannot meet.

Therefore, the elasticity based on the cloud-native ECS service becomes a natural choice. The most appealing feature of CyberStar, an elastic network element platform, is that the network elements are not deployed on bare metal servers or in resource pools dedicated to computing. Instead, they get deployed on Alibaba Cloud ECS instances, which means "infinite" resources and "infinite" scalability. As the business network elements no longer get deployed on traditional x86 physical servers, scalability problems such as a time-consuming deployment and complex scaling procedure have been solved. The CyberStar platform is now widely applied to core services such as Application Load Balancer (ALB), NAT Gateway, PrivateLink, CEN-TR, Global Accelerator (GA), and VPN Gateway.

Future Outlook

On the 2020 IDC FutureScape webinar, IDC predicted a significant trend toward clouddedicated devices. By 2024, more than 25% of new workloads on public clouds will get processed by dedicated infrastructure components from service providers. I believe this day will arrive much earlier because cloud-native dedicated devices built on integrated hardware and software have already become a popular choice in cloud network-related business scenarios. Likewise, the CyberStar elastic network element platform built on the cloud-native ECS service has also been deployed to cope with a wide range of scenarios.

In the future, cloud network technologies will continue to evolve in these two directions, and the core advantages of cloud networks will rely on cloud-native architectures.

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