Rick Donato

Introduction There have been a number of advancements in mobile wireless communication over the last few decades, since the introduction of the first generation (1G) mobile network in the early 1980s. This evolution of mobile communication standards is a direct result of the ever increasing global demand for more subscribers

Introduction In OSPF, a single autonomous system (AS) can be divided into smaller groups called areas. This reduces the number of link-state advertisements (LSAs) and other OSPF overhead traffic sent on the network, and it reduces the size of the topology database that each router must maintain. The routing devices

Introduction The goal of this article will be to provide you with the required steps to build a Virtual eXtensible LAN Ethernet VPN (VXLAN EVPN) fabric using the Cisco NXOS-9000v. The topology will be built using various protocols, so before we dive in let's look at the various

Introduction When integrating Nuage with OpenStack there are two types of models - OpenStack-Managed and VSD-Managed. In this article, we will look into both integration models, the benefits to each and the steps required to configure. VSD-Managed vs OpenStack-Managed Operation OpenStack-Managed is also referred to as the Basic Integration Model.

Introduction Within this article we will be exploring the world of Ansible and how it can be used to automate the network. We will start with automating the provisioning of an L3 spine and leaf fabric. Once complete we will then automate the connectivity testing across the fabric. Let'

IOS Classical IOS is based upon a monolithic kernel. This monolithic kernel runs all of its modules within the same memory space, providing no CPU or memory separation. Therefore, in the event of a single process/module crashing, the entire system would become unresponsive. Another disadvantage is around upgrades, as

When it comes to Content Delivery Networks (CDNs), there is something that has always puzzled me; How do CDNs work with Anycast based DNS servers? Background For example, the way in which CDNs function is to serve content from nodes closest to the client. CDNs determine the closest node to

A routing protocol specifies how routers communicate with each other, distributing information that enables them to select routes between any two nodes on a computer network.[1] There are 4 main categories of routing protocols: * Distance Vector (RIP) * Link-state (OSPF, ISIS) * Path Vector (BGP) * Hybrid (EIGRP) Figure 1: Routing protocol

... Here we are, at the final part of our series on how to install a virtual NSX lab. With our vSphere infra, NSX Manager, and NSX Control Cluster installed, we can now move to the NSX dataplane. NSX Dataplane The process for data plane installation is based upon the NSX