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SDN Overlay Networking Primer – Learn What is Cisco ACI?

SDN is stands for Software Defined Networking that makes your network on demand, it says that we have two boxes i.e. white box and black box. The entire control plane will reside in the controller only and controller will provide a flow table to all the switches through which your data plane works. New operational models are driving the need for infrastructure.

Cisco ACI is an element one among SDxCentral’s series to elucidate the Cisco ACI (Application Centric Infrastructure) framework and the way it’s the Cisco SDN Solution. Cisco ACI is new data center architecture designed to address the necessities of today’s traditional networks, as well as to meet rising demands that new computing trends and business factors are placing on the network.

Cisco’s Application Centric Infrastructure approach targets on the most crucial thing in the data-center: applications. What we do in the data center ultimately is used to support those applications and the data that they work on because that is what ultimately drives business value.

Remember that Cisco ACI supports software-based overlays that either terminate on the Cisco ACI fabric or run over the top. The end user can decide how to deploy workloads in the optional modes of deployment. The purpose is that Cisco ACI does not rely on software-based overlays to attain the flexibility and agility sought in SDN.

When implementing an overlay there are 3 major tasks that got to be accomplished and that they were all used in the instance.

Firstly, there should be a mechanism to forward packets through the network.  Traditional networking mechanisms work fine for this.

Secondly, there should be a mapping database where the location of a device or application can be lookup up and the result used to encapsulate the packet.

Thirdly, there must be a way to update the mapping database such that it is always as perfect as possible.  Having the incorrect information in the mapping database would result in packets being sent to the incorrect location and likely dropped.

What you’ll learn

  • Understanding of Overlay SDN Solutions
  • Compare between overlay and underlay networks
  • Describe advantages of VMware NSX
  • Describe advantages of Nuage Networks VSP

Who this course is for:

This course is mainly designed for-

  • Network Engineers
  • Computer Science Students

Cisco ACI introduces a new model to explain connectivity in the data center through group-based policy. As the result policy intent is abstracted, the end user can define how certain “things” connect to other “things” in the data center.

The use of overlay networking technologies is another common characteristic to a variety of SDN architectures. Overlay networks, offers a construct for the creation of logical networks that can be leveraged by edge devices and applications. Some of the benefits of overlay networks are as follows:

  • They can offer logical layer-2 adjacency without the requirement to create physically adjacent layer-2 networks. This is particularly useful for provisioning multi-datacenter surroundings where logical layer-2 connectivity is needed across layer-3 boundaries.
  • Some tunneling technologies offer much greater numbers of layer-2 networks than VLANs, which generally are limited to 4000 segments.
  • Faster and potentially simpler network provisioning and orchestration since interacting with the physical network is not needed.

The IT industry goes through an important transformation, cloud computing, with BYOD, IT as a service, big data, and security now prominent concerns. Simultaneously organizations increasingly want to reduce overall IT spending and to provide much-improved levels of service to business units and functions by increasing overall IT agility.

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What is Cisco ACI? What Are Its Benefits? Where to Get Cisco ACI Training?

Cisco ACI (Application Centric Infrastructure) is a software-defined networking solution that emerged from Cisco. It helps in developing enterprises and data center. It optimizes network, protects business and accelerates multi-cloud. With the successful completion of Cisco ACI training, you can make this technology more beneficial for enterprises. You can encourage them to set up this technology in data centers. Due to an increased demand for the Cisco ACI technology by organizations, there is a huge requirement of skilled professionals who are adept in this technology.

Why the demand for Cisco ACI Professionals

The reason behind the requirement for these experts in the Information Technology Industry is because they have the ability to build data center fabric. With their help, technology can smoothly move from traditional DC to SDN. It further leads to saving your investments, reducing management costs and time up to over 85%, and automate cloud apps securely.


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Key Benefits of ACI Technology

The benefits of Cisco ACI are manifold.  Enterprises, organizations or data centers reap a lot of benefits by using this technology, such as they can have centralized policy-defined automation management, automatic fabric deployment, and configuration with single point of management, holistic application-based solution to ensure automation and flexibility for agile IT.

Besides, the ACI technology ensures real-time visibility and application health score, automation of repetitive tasks, identification and removal of configuration errors, provision to monitor the physical and virtual network on a real-time basis, instant visibility into application performance, quick intelligent decisions, and an option to troubleshoot issues for day 2 operation quickly.

Going further with another advantage of Cisco AVI, it can allow the following:

  • Open standards, open APIs, and open-source elements
  • Automatic capture of all configuration changes
  • Detailed role-based access control (RBAC)
  • Deployment of Automatic application
  • Faster provisioning based on predefined profiles
  • Application life cycle management
  • Incessant and fast delivery of virtualized and distributed applications

Above all, by implementing the Cisco ACI technology, it is easy to move traffic from traditional or physical and virtualized servers to its destination. Professionals can apply several services like they can optimize traffic that leads to improvement of application performance, establish telemetry services, monitor the health of overall application, apply security rules embedded with forwarding and much more. Not only that there is a great advantage of Cisco ACI to data centers such as it can automate networking moves, additions and changes in the data center. The rate of technology is also quite impressive,

Getting Cisco ACI Training

With the requirement of Cisco ACI training professionals, many companies have started delivering the training to applicants. However, a leading training institute offers training with lac support and industry experts. Trainers are committed to making the training journey very easy and comprehensive.  Also, they design the ACI course syllabus full of lectures and real-time solutions. With the help of their training, a candidate will be able to work with ACI technology in networks.


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Below are the following points covered under a professional Cisco ACI training program:

  • Detailed Overview of Cisco ACI
  • Detailed Overview of 9k Hardware
  • Tips for configuring 9k switches in ACI mode
  • In-depth concepts of ACI Licensing
  • An overview of VXLAN
  • topics on APIC initialization and discovery
  • ACI tenants, VTP, methods to integrate ACI in VMWare
  • ACI L3, ACI security, ACI end to end lab, and many more

Besides all these, a good training institute strives for providing world-class training to aspirants. They make sure lab facilities with 24/7 access, hands-on training for each topic, data center certified professional, availability of Online, regular, weekends, weekdays, fast track classes,and much more.

To conclude, if you aim at becoming a successful network engineer, then look for a reputable Cisco training institute and apply for the Cisco ACI training.

We hope this post will help you. In case of any query about course you may call us directly on +91 8383 961 646, 0124 4016 313.

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