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Why is Cisco ACI replacing traditional networks?

Why is Cisco ACI replacing traditional networks?

Companies are increasingly moving from traditional networks to SDN-based networks. Cisco ACI is an excellent SDN solution that most companies adopt. 

⚡ What is Cisco ACI ? đź“ś

Cisco Application Centric Infrastructure (ACI) is a Next generation SDN solution and is designed for data centers spine-leaf architecture for the policy-driven solution. Cisco ACI provides application agility and data center automation with simplified operations.

Cisco Application Centric Infrastructure (ACI) uses Spine-Leaf architecture as you know and is typically deployed as two layers: spines (like an aggregation layer), and leaves (like an get right of entry to layer). spine-leaf topologies provide excessive-bandwidth, low-latency, non-blocking server-to-server connectivity.

Let's look at the top nine benefits and characteristics of ACI as compared to traditional networks.

Why is Cisco ACI replacing traditional networks?
Fig 1.1- Why is Cisco ACI replacing traditional networks?

1. Management Simplification đź“ś

ACI integrates multiple switches into a single fabric infrastructure. Lets take an example, if you need to configure 50 switches, APIC can do it with a few clicks. If you need to add a new switch, simply connect it to the fabric, and it will instantly inherit all of the APIC policies and configuration. Saving time to login to the CLI of every device and configure helps shorten the overall time of the configuration and implementation.

2. Programmability & Automationđź“ś

ACI has full native programmability using a REST API that enables access to all features. Ansible is another tool that ACI uses for automation. Automation handles frequent recurring updates so you don't have to log into APIC.

3. Access Control & Securityđź“ś

ACI provides uniform access policies across the domain, including for remote sites and cloud services. Micro segmentation for the same subnet traffic, even when it is spread over two datacenters.

4. Security devices integrationđź“ś

Cisco ACI allows you to establish a firewall or an intrusion prevention system (IPS) between EPGs as a Layer 4–7 service. The security device encrypts east-west traffic across application tiers within EPGs, as well as north-south traffic between users and apps.

5. Virtual Environment Supportđź“ś

The inclusion of Virtual Machine Manager (VMM) allows the ACI fabric to extend network policies to the end hosts' virtualization switching layer. ACI can integrate with VMware, Microsoft, OpenStack, Kubernetes, and Open Shift.

6. Network Configuration Failure Recoveryđź“ś

In the incident of a failure due to network configuration, ACI changes can be reversed in seconds. It is not always straightforward to roll back changes on a typical network because you may need to enter into several devices manually.

7. Scalabilityđź“ś

ACI is highly scalable. Adding spine switches increases fabric bandwidth. Adding leaf switches increases end point bandwidth. They will integrate automatically using APIC's setup.

8. Visibilityđź“ś

APIC provides full network view from a single pane of glass. It is more than just interface counts and show commands; it provides full end-to-end visibility with built-in dedicated tools.

9. Software Upgradesđź“ś

Download the image and send it to APIC. Push on the fabric. You will not be able to upgrade the entire fabric at once, but using APIC saves time and eliminates the possibility of inconsistencies.

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