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Network Adminsitration

How to Configure NAT in VMware / VirtualBox - Tutorial - YouTube 6:25

How to Configure NAT in VMware and VirtualBox . In this tutorial you can learn how to configure the NAT (Network Address Translation) in VMware Workstation, VirtualBox or VMware Player.

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8 weeks of #VCAP – Private VLANS (mwpreston dot net)

While we are on the topic of vSphere Distributed Switches why not just cover Private VLANs.  Private VLANs is something I've never used in production, thus the reason I'm covering it in this series.  Honestly, this lazy Sunday night is the first ...
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Jumbo Frame with ESXi: What I Learned at Home Lab (DoubleCloud)

While building my home lab, I found a bit trouble setting up the jumbo frame of MTU 9000 which is supposedly faster than normal frame of MTU 1500. To set it up, I changed the MTU on both ESXi and the Synology DS1513+. The steps involved are pretty simple ...
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vSwitch Load Balancing Policies Best Practises

It is important to set the right load balancing policy on your standard or distributed vSwitch. In this article I will talk about how each policy work and give my general recommendation.

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Puppet Enterprise for the Network - PuppetConf 2013 - YouTube 41:48

Discusses the networking community and how they approach automation - current challenges/opportunities Learn about the "Netdev" Puppet module initiative; a "standard library" of resource types for networking equipment - current and future ideas.SpeakerJer ...
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Understanding TCP Checksum Offloading (TCO) in a VMware Environment (2052904)

The TCP header contains a 16-bit checksum field which is used to verify the integrity of the header and data. For performance reasons the checksum calculation on the transmit side and verification on the receive side may be offloaded from the operating sy ...
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ESXi “Management traffic” tickbox, what does it do? (Yellow Bricks)

I have seen this popping up various times over the last few years. That little tickbox on your VMkernel NIC that says “Management traffic” (aka management network) what is it for? What if I untick it, will SSH to that VMkernel still work? Will the HA hear ...
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PowerCLI Automated Portgroup Management on a Standard vSwitch

Have you ever needed to move\restore Standard vSwitch portgroups?  If so, I’m hoping you didn’t do it manually.  o_0.  I recently had to re-install a few servers that used the Standard vSwitch, and I cobbled together some PowerCLI code to h ...
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Webinar: Introduction to Cloud Managed Switches - YouTube 57:58

Join us for a tour of this new class of switches that brings cloud-based visibility and control over the entire edge network. From seeing combined views of thousands of ports to using diagnostic tools that improve daily operations, learn how cloud-managed ...
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Disabling Netflow with PowerCLI

Today I was asked if there was a script to disable Netflow on a VDPortgroup, the below was a couple of quick and dirty scripts to first of all list all VDPortgroups and if they have Netflow enabled, the second was to disable Netflow for a VDPortgroup or a ...
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Obtaining CDP info via PowerCLI

There are quite a few posts out there already on this topic and in fact the official VMware KB article has a suggestion on how you can get CDP info via PowerCLI. I didn’t really like the way they presented the code though so I made my own function Get-VMH ...
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Webinar: Cloud Managed Switches - YouTube 48:56

Join us for a tour of this new class of switches that brings cloud-based visibility and control over the entire edge network. From seeing combined views of thousands of ports to using diagnostic tools that improve daily operations, learn how cloud-managed ...
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Network port diagram for vSphere 5.x

Somehow I missed this one, but as I reviewed the diagram and helped selecting the right format I figured I would still share it. This Network port diagram for vSphere 5.x is one awesome resource for those folks who want to get to the bottom of how compone ...
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Connecting two Vmware with gns3 - YouTube 11:41

In this video I connected Vm machine "XP1" with gns3 router R1 and Vm machine "XP2" with router R2. After that implemented ospf routing between router R1 and R2. If this video is useful for you please like and comment. :)

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Open Shortest Path First (OSPF) Configuration Basics CISCO

The typical configuration of OSPF on a Cisco device is rather simple, assuming that the IPv4 addressing has been configured correctly (connecting interface subnet’s match). For the purposes of this example, the topology shown in Figure 1 will be used.

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A Look at Network Automations Automate 9

A look at Network Automations Automate 9: Last month I wrote a post titled “Is Automation Killing the Engineering?” For this post I want to explore the idea that it is not the automation that might be killing the engineering but rather how far and good so ...
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How to – use vmkping to verify Jumbo Frames

You have configured Jumbo Frames in your VMware infrastructure and want to verify if everything is working well? No problem – you can do this with the command vmkping. But you should take care how to use this command.

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Improving Performance with Path Optimization and UDT – VMware vCC 2.5

In vCC 2.0, we saw a parallel copy operation which could consume more time to copy a VM from On-Prem Datacenter to the Cloud Datacenter. However, now with the release of VMware vCloud Connector 2.5, VMware brings a new feature and that is path optimizati ...
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