Category: Best Practice

Consuming AWS Native Services from applications running on onPrem ACI Fabric

January 26, 2023

Table of Contents: Introduction Native Service examples on AWS shown in this writeup Overall Example Topology & Explanation Route53 Private Hosted Zone setup for oncloud.com CoreDns Install and setup for onprem.com Route53 Resolver Inbound Endpoint Route53 Resolver Outbound Endpoint S3 VPC Interface Endpoint EC2 VPC Interface Endpoint SQS VPC Interface Endpoint References Introduction Customers using … More Consuming AWS Native Services from applications running on onPrem ACI Fabric

Nexus Dashboard 2.1 – New Features – Federated Clusters

September 20, 2021

Nexus Dashboard 2.1 has incorporated a lot of New Features/Improvements.  In this write-up, I will primarily discuss the Federated Nexus Dashboard configuration, why use it and also discuss some of other underlying improvements/changes.  I will also show how to send API calls to Nexus Dashboard Federated Clusters to get Federation Related Information. Installing ND is … More Nexus Dashboard 2.1 – New Features – Federated Clusters

Understanding ACI TCAM Utilization & Optimization

January 6, 2021

Being organized and creating consistent configurations is a great virtue in the Networking / SDN / Cloud and computing field.  ACI is no exception to that rule.  Haphazard, Inconsistent and thoughtless configurations will increase your work and complexity/understanding of your infrastructure once your  Fabric grows.  In addition it will make it more prone to failures … More Understanding ACI TCAM Utilization & Optimization

ACI NetCentric 2 AppCentric Using MicroSegmentation

February 22, 2020

In this blog post, I’ll discuss a method of moving from Network Centric ACI Deployment to APP Centric ACI deployment using combination of ACI Features: MicroSegmentation/PrefferedGroups/ContractMasters. When ACI Fabric is initially deployed, it is either deployed in a Greenfield or Brownfield method. Green Field means it’s a brand new deployment. Brown Field means that the … More ACI NetCentric 2 AppCentric Using MicroSegmentation

Understanding Scope Of Prefixes in L3Out External EPG in ACI

November 8, 2019

In ACI the external Routing Peer to the router is done through border leaves with a object called L3Out.   L3Out has an object in it called the L3Out InstP also known as the External EPG.    In the External EPG you can put in Prefixes and choose the scope based on your intended goal.   Under the … More Understanding Scope Of Prefixes in L3Out External EPG in ACI

Using MCP (MisCabling Protocol) for ACI

March 27, 2018

MisCabling Protocol (or MCP) detects loops from external sources (i.e., misbehaving servers, external networking equipment running STP) and will err-disable the interface on which ACI receives its own packet. Enabling this feature is a best practice and it should be enabled globally and on all interfaces, regardless of the end device. MCP limits the blast … More Using MCP (MisCabling Protocol) for ACI