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Reference Architecture | Dynamic L4-L7 Service Insertion with Cisco ACI and A10 Thunder ADC

Executive Summary

Traditional data center infrastructures are inﬂexible, diﬃcult to change and don’t scale well, making it hard to

meet today’s demanding data center needs in a cost-eﬀective manner. Teams that build and manage data

center infrastructure traditionally operate in their own silos, with no common operational model between

application, network and security. As a result, new application rollout takes anywhere between a few weeks

to months of eﬀort often due to poor coordination between the diﬀerent teams managing data center

infrastructure.

One way to solve this problem is by making use of programmable application services to build new data center

infrastructure, which will deliver consistent policy enforcement across all applications in a timely manner. Cisco

Application Centric Infrastructure (ACI), together with A10 Networks® Thunder® ADC line of Application Delivery

Controllers, allows organizations to respond rapidly to business demands by enabling automatic provisioning

of dynamic L4-L7 application networking and security services. This integrated solution delivers automated

policy enforcement for business applications in an application-centric, programmable approach by combining

applications, networking, security and the underlying infrastructure.

Document Scope

The purpose of this reference architecture is to serve as a design guide for the dynamic L4-L7 service insertion

solution architecture for A10 Thunder ADC L4-L7 services with Cisco ACI. This joint solution consists of Cisco

Nexus 9000 switches, Cisco Application Policy Infrastructure Controller (APIC), and A10 Thunder ADC physical

and virtual appliances. This reference architecture explains how to auto provision and deploy A10 Thunder ADC

devices in a Cisco ACI design using Cisco APIC with the A10 device package. Examples of A10 Thunder ADC L4-

L7 services deployment using Cisco APIC GUI and XML post scripts are also included in this document.

Audience

Cloud, networking and data center architects who are responsible for planning, designing and implementing

network architecture for modern data centers are the primary target audience for this document. The

document should also be useful to system engineers and professional services specialists who are responsible

for deploying and managing public or private cloud data center infrastructure built using Cisco ACI. Readers

should have some degree of familiarity with Cisco ACI and A10 Thunder ADC.

Business Challenge

Traditional data center infrastructures are inﬂexible and don’t scale well beyond a certain point. This makes

it diﬃcult to meet business agility and scaling needs in a cost-eﬀectively manner. Applications, network and

security teams who build and manage data center infrastructure traditionally operate in their respective

silos, which means that there is no common operational model between them. Provisioning applications

and addressing their changing network services needs are time-consuming and require signiﬁcant process

overhead. Manual service provisioning creates operational challenges to scale up and quickly deploy resources

for a broad range of applications while ensuring application availability, performance and security. As a result,

the ability of data center administrators to react quickly to business demands is constrained.

Business agility comes from application agility – the ability to roll out and provision new applications in hours

instead of days, weeks and months. Rolling out new applications typically requires orchestration of multiple

resources at the compute, network and storage services level in a coordinated fashion inside the Infrastructure-

as-a-Service (IaaS) layer and/or orchestration of applications being hosted in the cloud.

Cloud IaaS delivers vastly greater business agility, service provisioning times and economics. However, Cloud

IaaS requires that the underlying infrastructure is automated and scalable to build an on-demand delivery

model providing dynamic and consistent services in a shared, multi-tenant environment. To build this model,

it is important to put applications, networking, security and the underlying infrastructure in a common

operational model that is optimized at solving business problems. This application-centric model should

include application networking services with other data center infrastructure to deliver dynamic L4-L7 services

and automated policy enforcement.

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