Genie's Tech Blog

Where knowledge has no dimensions

Enabling BGP in ACI fabric

Hello Friends Today, I will be showing how we can enable BGP in the ACI fabric i.e. between the Spine and the Leaf switches. Between the Spine and the leaf switches, only two protocols are run. One is BGP and the other is ISIS. ISIS is enabled by default. You need to manually configure / enable BGP. The BGP session that we bring up between the Spine and the leaf is MP-BGP session and the Spine nodes always act as a route-reflector. The MP-BGP session is only required for External L3 connections to the ACI fabric. For the internal connections, MP-BGP is not required. In order to demonstrate h... [More]

Verifying ACI fabric with APIC CLI

Hello Friends, Today, I am going to share how you can verify the ACI fabric from the APIC CLI (Command Line Interface). Though we can do the same thing from the GUI but the fastest We also need to know how to look at things from the CLI. For the demonstration, we shall be using the below topology:   First of all, We need to understand the directory structure that is maintained by the APIC controller. Once you login into the APIC controller using the ssh, you will be in the home directory of the user admin. There you can see three directories: - aci- debug- mit Out of these three dire... [More]

Software Defined Networking with Cisco ACI

Hello Friends, Today we are going to discuss on a very hot topic which is booming in the networking industry and that is SDN. But we are not going to understand SDN here but we will be seeing what is Cisco's solution to SDN. Before we start our discussion, lets understand what SDN means and how it works? SDN (Software Defined Networking) as the name suggests means managing the network the way you want by writing a small piece of code to achieve the task. As per ONF (Open Network Foundation), "Software-Defined Networking (SDN) is an emerging architecture that is dynamic, manageable, cost... [More]