This is a post that takes the previous Nexus EVPN VXLAN Fabric post, and uses Ansible to build the topology. This is based off this Cisco developer document. General Info This project is located in my GitLab. In order to run the Ansible playbook navigate to the nexus_evpn, and run ansible-playbook -i inventory/DC_inv.ini site.yml Setup […]
Cisco Nexus EVPN VXLAN Fabric Ansible Automation Read More »
In this post, I will outline the configuration for a VXLAN fabric using BGP EVPN and OSPF as the underlay. This is similar to my previous Arista project and VXLAN project. The topology of this post will be four switches and six clients. For the configuration, I will go section by section for each device
Cisco Nexus EVPN VXLAN Fabric Read More »
These are the base configs I have used in my lab for all the Nexus switches. It’s enough for me to get SSH access and to use the API. Spine1 Spine2 Leaf1 Leaf2
Cisco Nexus EVPN VXLAN Fabric GNS3 Setup Read More »
If you already have ACI running and then want to move to a DevOps approach and bring that configuration into Terraform, how can that be performed? The ACI Terraform provider supports importing configuration. All that is required is the resource and name of that resource. In the following example, I will use the Cisco ACI
Importing ACI Configuration to Terraform Read More »
In my previous ACI automation post, I used Terraform and the credentials were in plain text inside the main.tf file. I have updated this, so the credentials are stored in GitLab environment variables, which is a much more secure method. The process of the credentials from GitLab to Terraform are as follows; Create Environment Variables
GitLab Variables for Credentials – ACI Lab Read More »
In a previous post, I have created a sample of FortiGate config with Terraform. This was all performed locally from a Windows machine. While this is good in a lab environment, the major problem with it is that the management doesn’t scale. If there is more than a single network engineer, they need to share
FortiGate Terraform with GitLab CI/CD Pipeline Read More »
After setting up the GitLab CI/CI pipeline, the next step I wanted to take is to use Terraform to make changes to AWS infrastructure. There are several steps to configure a GitLab pipeline for Terraform. This example is for a new project with nothing yet configured in AWS yet. Create a New Project in GitLab
GitLab Terraform AWS Pipeline Read More »
This is a short post to explain how to setup a GitLab SSH key to securely access your repos. For the full GitLab documentation, please see this article. In GitLab, to create an SSH key, navigate to: User Settings >> SSH Keys Generate an SSH Key I am doing this on a Mac, open a
GitLab Create SSH Key Read More »
DevOps principles are becoming very popular in the networking space. In this post, I will demonstrate how to setup a GitLab pipeline using your own GitLab Runner. By default, GitLab does have public runners that perform the same tasks. Overview In GitLab, a pipeline is a series of stages and jobs defined in a .gitlab-ci.yml
CI/CD Pipelines With Git Lab Read More »
BGP Path selection relies on the BGP attributes. I have described the eight most important BGP attributes in my previous BGP Basic Information post. Weight: The path with the highest weight is preferred. This is only locally significant and not affect any other router within the AS. Cisco only, used for outbound path selection Local Preference: The
BGP Path Selection Read More »