In today’s bus iness environment, enterprise customers are under more pressure than ever to innovate and adapt to new challenges and market conditions. Enterprises want to focus their investments on their core business while reducing IT spending.
The cloud offers enterprise customers many benefits, such as lower costs and flexibility.
The cloud’s elastic model enables a company to increase and decrease infrastructure capacity on demand. The usage-based model offered by the cloud helps governments and enterprises reduce costs while increasing business agility by moving applications to the cloud and consuming infrastructure resources from the cloud. This leads to enterprises looking at consuming network and IT services from the cloud rather than investing in in-house operations.
The enabling technology in unlocking the cloud is virtualization. Virtualization abstracts and isolates the computing hardware and underlying infrastructure into a logical resource pool, allowing key capabilities such as resource sharing, virtual machine (VM) isolation, and load balancing. These capabilities provide the fundamental building blocks for an agile and scalable cloud environment with rapid provisioning, workload sharing, and increased availability.
The surge in applications and IT service consumption moving to the cloud highlights the need for evolved technologies and network elements in the cloud that offer security and visibility to help businesses with performance and compliance verification. Evolved networks and network services enable the provider to offer cloud services with security, performance, and availability. The Cisco Cloud Services Router 1000V (CSR 1000V) is a fully virtualized software router that offers a platform for enterprises to extend the data center to the cloud and to enforce their policies in the cloud.
The Cisco CSR 1000V provides a transparent solution for extending IT services into provider-hosted clouds. The solution offers a rich set of features, including VPN, firewall, Network Address Translation (NAT), application visibility, and WAN optimization.
These functions allow enterprise and cloud providers to build highly secure, scalable, and extensible cloud networks. In addition, the Cisco CSR 1000V supports a rich set of application programming interfaces (API), providing robust integration into softwaredefined networking (SDN) for automated provisioning of these networks and network services and allowing simplified management and orchestration, which help in driving down costs further.
Networks inherently carry vast amounts of information, including user locations, device capabilities, topologies, and end-to-end performance characteristics. When exposed appropriately through well-defined APIs, such information can be consumed by cloud applications to fine-tune and customize their efficient delivery. The future holds the promise of increasingly rich application–network interactions.
The primary objective of this book is to simplify design aspects and architectural details in a unified resource, augmenting Cisco’s existing collection of installation and configuration guides for various cloud-related products and solutions. This book covers the key virtualization technologies used in the cloud; it provides a concise, accessible presentation of cloud network services and the different types of operational environments in the cloud. Cloud networking service and delivery concepts are reinforced with illustrative examples; architecture of SDN orchestration and its connection to Cisco CSR 1000V network services are introduced and elaborated upon. In addition, the book reviews the building blocks of the CSR 1000V, covering its architecture and software design.
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