Browsing Posts in vNetworking

Reading Time: < 1 minute This is an article that I wrote as a contribuitor for the Aruba blog. Read the full article. A network switch works at Layer 2 (in the ISO/OSI model) and potentially does not need any configuration because it can learn about the network topology and how to forward properly the Ethernet frames using its internal MAC address or port table.

Reading Time: < 1 minute This is an article that I wrote as a contribuitor for the Aruba blog. Read the full article. What is the edge when it comes to networking terminology? Unfortunately, there isn’t a simple and clear answer.

Reading Time: < 1 minute This is an article that I wrote as a contribuitor for the Aruba blog. Read the full article. Network topology is the arrangement of the different network elements of a communication network, usually represented with a graph.

Reading Time: < 1 minute This is an article that I wrote as a contribuitor for the Aruba blog. Read the full article. Network topology is the arrangement of the different network elements of a communication network, usually represented with a graph. Network topology is an application of graph theory in which different network devices are modeled as nodes and the connections between the devices are modeled as links or lines between the nodes.

Reading Time: < 1 minute This is an article that I wrote as a contribuitor for the Aruba blog. Read the full article Why Small and Midsize Businesses Need Modern Switches with Strong Security. The network is an important ingredient in any IT security plan, because cyberattacks commonly arrive from the network and attacks also use the network to propagate the damage. Network security is a huge priority for large companies, but it’s equally important for small and midsize businesses (SMBs).

Reading Time: < 1 minute This is an article that I wrote as a contribuitor for the Aruba blog. Read the full article Stacking Network Switches: Why and Why Not. In networking, the term “stack” (or stackable) refers to a group of physical switches that have been cabled and grouped in one single logical switch. Over the years, stacking features have evolved from a premium (and costly feature) to a core capability of almost all enterprise-grade switches (and also in several SMB models).

Reading Time: 4 minutes Now that Network Virtualization and Software Defined Network are becoming mainstream, there is a new trend in networking: Software-Defined WAN (SD-WAN). What is SD-WAN? SD-WAN is best defined as traffic monitoring and management from physical devices to the application itself, capitalizing on flexibility and agility. This intelligent routing is abstracted into a virtual overlay, enabling a secured pooling of both private and public connections allowing for automation, centralized network control and real-time management across multiple links. 

Reading Time: 2 minutes Remote Direct Memory Access (RDMA) is an interesting way to improve network connections and bandwith by providing a direct memory access from the memory of one system  into that of another. Compared to the full TCP/IP stack, RDMA can be managed without involving either one’s operating system (OS) and this means saving host resources and speed-up the communication. RDMA permits high-throughput and low-latencynetworking, but more important is becoming a common feature on some network card, and also supported by different OSes and hypervisors.

Reading Time: 4 minutes VMware NSX-T Data Center is the next generation product that provides a scalable network virtualization and micro-segmentation platform for multi-hypervisor environments, container deployments, and native workloads. It has not yet become features parity with NSX-v, but the gap is closing faster and there are also several new features and capabilities available ONLY on NSX-T. And the product is growing faster: on June was release the NSX-T Data Center 2.2.0 and now there is the new NSX-T Data Center 2.3.0 release (see the release notes).

Reading Time: 3 minutes VMware NSX Data Center for vSphere is the new name of NSX-v and NSX-t for the on-prem case, and version 6 is actually referring to the specific edition for VMware vSphere that use the vCenter Server UI has the main UI also for all the NSX part. There are other NSX products, but VMware has just announced a new minor version for the vSphere related product: NSX Data Center for vSphere v6.4.2 it’s out. The release notes describe all the new features and improvement of this release:

Reading Time: 3 minutes Arrcus emerges from stealth and has launched and released its first product: ArcOS, an independent, open, Linux-based, hardware agnostic network operating system. ArcOS is a high-quality alternative to vertically integrated OEMs, to meet and exceed the modern smart network infrastructure requirements. ArcOS is a fully programmable, microservices-based network operating system built from first principles. Based on Debian Linux, it is an open system that can be easily integrated with other Linux distributions as well.

Reading Time: 3 minutes Runecast is a powerful tool to monitoring and check a vSphere environment and recently also for a VSAN environment. But it’s not over, actually there is a beta for the new version (Runecast version: 1.7.6 probably) that can analyze also NSX-V environments and this could be quite cool, considering the potentially complexity of a NSX infrastructure. I’ve tested the beta on a small lab, just to see how does it work.

Reading Time: 4 minutes Big Switch Networks announced that Big Cloud Fabric (BCF) now supports a robust ecosystem of the leading hyperconverged (HCI) solutions, including: VMware vSAN, Dell EMC ScaleIO, and Nutanix. Big Switch Networks is a company in the Software Defined Network (SDN) area with a clear declared mission: to bring network innovation to a broader audience, by delivering fit-for-purpose products based on hyperscale networking technologies.

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