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

Previously we installed the vSphere infra, and the NSX Manager. Now we will install the NSX control plane. Let's continue... NSX Control Plane We will now deploy the NSX Control Cluster. The control cluster will be 3 x VMs deployed by the NSX manager onto the Edge cluster.

What is FCoE? Fibre Channel over Ethernet (FCoE) is a computer network technology that encapsulates Fibre Channel frames over Ethernet networks. This allows Fibre Channel to use 10 Gigabit Ethernet networks (or higher speeds) while preserving the Fibre Channel protocol.[1] This removes the need to run separate LAN and

Within the previous part to our series, we installed the vSphere infra. We will now deploy the NSX manager and associate it to our vCenter. NSX Manager Deploy Within vCenter deploy the NSX Manager OVF, during the install using the following settings. DNS Server list 172.29.236.139 Domain

What is Fibre Channel? FC (Fibre Channel) is a network technology, predominantly used within storage area networks, to provide high-speed, loss-less delivery of raw block data between computer data storage and server devices. The Fibre Channel network (aka fabric) is a dedicated high-speed, low latency storage network, supporting bandwidth speeds

What is Micro-Segmentation? When it comes to SDN micro-segmentation is one of the biggest use cases/features that it has to offer. But what is micro-segmentation? In its purest form, Micro-Segmentation is a security technique that further isolates workloads/segments, allowing for finer-grained security controls to be applied. Traditionally, network