Cloud Networking

Cumulus Networks Layer-3 Leaf-Spine Fabric with EVPN as a Control Plane for VXLAN

September 26, 2017
Testing Cumulus Networks Linux
by Pablo Narváez

Welcome back! In this article I will be testing VXLAN again, but this time on Cumulus Linux. I will replace the manual VTEP flood-lists/mappings (Head End Replication) with EVPN to provide a different control plane for VXLAN.

For lab purposes, I will use a self-contained virtual environment to run Cumulus VX as a VM on top of Ubuntu 16.0.4 LTS and KVM.…

Arista Layer-3 Leaf-Spine Fabric with VXLAN HER: Lab Part 4

August 2, 2017
Configuring and Testing VXLAN
by Pablo Narváez

This is the last article in the series, we will finish this lab with the VXLAN configuration and testing connectivity between servers.

VIRTUAL EXTENSIBLE LAN (VXLAN)

The VXLAN protocol is an RFC (7348). The standard defines a MAC in IP encapsulation protocol allowing the construction of Layer-2 domains across a Layer-3 IP infrastructure.…

Arista Layer-3 Leaf-Spine Fabric with VXLAN HER: Lab Part 3

August 2, 2017
Configuring the Layer-3 Ethernet fabric

by Pablo Narváez

Hello there, welcome to the third article in the series. In this post, we will configure the Layer-3 Fabric (Underlay) so we are ready for VXLAN (Overlay).

During the configuration process, you will notice that the Layer-3 Leaf-Spine design (L3LS) design has a number of elements that need to be considered to implement it.…

Arista Layer-3 Leaf-Spine Fabric with VXLAN HER: Lab Part 2

July 19, 2017
Virtual Environment Setup
by Pablo Narváez

Welcome to the second blog post in my multi-part series describing in detail how I will deploy a L3SL-V Ethernet fabric with Arista vEOS and Ubuntu/KVM. In this post, I’m going to dive into the first component of the deployment: the virtual environment and the VMs.

vm_spreadsheet3

Virtual Machine Spreadsheet – Inventory List

As it’s shown in the inventory list above (spreadsheet), I’m going to use a single server with KVM to create multiple VMs.…

Arista Layer-3 Leaf-Spine Fabric with VXLAN HER: Lab Part 1

July 11, 2017
Introduction
by Pablo Narváez

This is the first post in a series where I’ll go deep on how VXLAN is deployed on Arista switches and how it operates in a Layer-3 Ethernet fabric.

vxlan-fabric-netwokdiagram

Two-tier Layer-3 VXLAN Ethernet Fabric

For this lab, I will create a self-contained virtual environment with Ubuntu Linux/KVM and Arista virtual EOS (vEOS). Please note, the IP Storage, Services and Border Leafs will not be deployed yet; once we are done with VXLAN, I will add new features and functionalities including the extra Leafs.…