Hyper-V Networking 101. Part 1: NICs and Switches
Posted by Thorsten Windrath on
March 22, 2017
There are lots of posts regarding Hyper-V networking. But there doesn’t seem to be a single compiled and up to date guide covering fundamentals and some advanced topics alike. This article aims to fill that gap, without a wall of text but a few easy to understand diagrams, tables, and PowerShell snippets. We will take a look at Hyper-V’s basic networking concept, NIC teaming (Network Interface Card) and different approaches to let VMs (Virtual Machines) talk to specific VLANs or even VLAN trunks.
The first article in the Hyper-V Networking 101 series will cover everything you need to know about virtual switches and NICs. The last post is planned as a real-world example: A way to implement a secure Wi-Fi (and/or wired) guest network on top of a virtual firewall.
Eliminating Blue Screen or Errors during failover
Posted by Taras Shved on
March 15, 2017
The reason for writing this post was a recent case from one of our customers, who ran into an issue when their SAN switch failed. The problem was that their VMs were generating an enormous amount of errors that were caused by the switching of active paths at the time of failover.
You got SDN, now what
Posted by Michael Ryom on
October 20, 2016
It has three years since VMware announced and showcased NSX to the world. Since then everyone and then some has announced their version of SDN. You have players such a Cisco, Cumulus Networks and of course VMware in this space. All doing SDN in their own unique way. Cisco being the biggest network player of course wants to move hardware to your datacenter. Therefore, their way to SDN is to buy new boxes. Another player is Cumulus Networks, again theirs another focus. Here the OS is king. Build on open source components Cumulus Networks deliver the OS for SDN, which run on any white box. If you do not want to build your own white box networks based on Cumulus Networks many vendors have, join Cumulus Networks. Vendors such as HPE, Dell and Supermicro amongst others are selling switches, which comes with Cumulus Networks OS baked in. Even Microsoft is entering the stage of SDN with Server 2016, though one could argue a bit late, but then better late than never.
Comparing vSphere Distributed Switch and Cisco Nexus 1000v switch
Posted by Askar Kopbayev on
July 7, 2016
When time comes to deciding whether to go with vSphere Distributed Switch or Cisco Nexus 1000v it is hard to tell which product is superior and you find many different and quite contradictory opinions.
While quite often it is the political decision based on the answer to the question “Who is going to manage the virtual networking?” there are many other aspects you, as an infrastructure designer, should be aware of.
Recently VMware announced End of Sale of Nexus 1000v which caused some confusion amongst clients. I know customers who were pretty sure Cisco discontinued Nexus 1000v, but rest assured, Cisco is still fully committed to continue development of virtual networking and to support Nexus 1000v in the latest and future versions of vSphere.