Fast and basic DRP solution (part 2)

In the previous post, I oversimplified the situation just for an easy onboarding to the case. Now it’s time to go into deeper details. First I will describe a bit more the design I had for this case, with my context and constraints, and then a great option to add dynamic routing (based on some talks with Ivan Pepelnjak and Nicola Modena, thanks for that gentlemen). By the end of the post, you will have a pretty complete rationale that might be helpful. Then it’s your job to find the right balance for your scenario. ...

February 15, 2021 · 10 min · 1983 words · Adrian Giacometti

Fast and basic DRP solution

Some time ago I was asked to design the networking part as a basic DRP solution with the aim to fulfill an audit requirement, basically, the DRP has to cover the scenario of the main Datacenter going completely offline. So, all or nothing scenario, and only the main applications were covered. The secondary site would be an already existing site in the same metropolitan area. It was very time-constrained, so there were several aspects to overcome, the most important ones were related to IP addressing. ...

December 18, 2020 · 4 min · 664 words · Adrian Giacometti

Cloud migration in 8 minutes: security rules from on-premise Cisco ACI to Oracle Cloud OCI with Terraform

Introduction A couple of months ago I was tasked to accelerate a cloud migration from the networking perspective. Context: Cisco ACI already deployed, with security rules grouped by functions and already agreed with the security team Migration to Oracle Cloud (aka OCI) already started and growing But, since Cisco ACI and Oracle OCI are configured in a different way, now there were two growing and divergent schemas, where manual deployment on OCI would take several months and a lot of conflicts, between operations and delivery. ...

September 25, 2020 · 5 min · 983 words · Adrian Giacometti