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iPerf Network performance comparison between Virtual Machines on ESXi6
I finally found some time to run a series of iPerf network performance tests between Windows server 2008 R2, Windows 2012 and a Linux Debian virtual machines. The tests compare bandwidth throughput between vmxnet3, e1000 going through a 1Gbit and &he...
Posted in Linux, Networking, VMware
Tagged bandwidth performance test vmware vsphere 6, change default window size linux tcp stack, comparison between e1000 vmxnet3 1gbit 10gbit jumbo frames mtu 9000, esxi slow network performance, iperf linux TCP window size: 1.00 MByte (WARNING: requested 512 KByte), network throughput performance, tcp tunning linux vm increase default window size, vm to vm network throughput, vmware iperf tests esxi6
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How to set up a Microsoft Network Load Balancing (NLB) in Windows 2008 R2
OVERVIEW Here is a quick guide how to set up two Web Servers that will be serving out the same web page for redundancy and load balancing purposes. When we go to www.mywebsite.com address, the name will resolve to the Load Balancing … Cont...
Manually running sysprep.xml file generated by VMware vCenter
When a user deploys a VM from a template, there is an option to customize the virtual machine by attaching a customization spec to the VM. What happens in the background is that the virtual machine is cloned from a … Continue reading →...
Easy way to create a portable version of the vSphere Client
I recently stumbled on a very easy way to create a portable version of the vSphere client without using Thinapp. The process extracts the contents of the msi installer that you can copy into a folder and take along with … Continue reading &r...
Netstat script that runs every 60 seconds and counts open connections
Here is a quick NETSTAT script that runs every 60 seconds and appends the output to c:\ports\netstat.txt. The script exports the count of connections in a specific state. The output is very similar to what TcpView shows you at the bottom of &he...
Posted in Networking, Scripting
Tagged netstat runs every minute and logs open ports, netstat script that runs on an interval, netstat script TIME_WAIT ESTABLISHED CLOSE_WAIT LISTENING ALL OPEN PORTS, netstat script to count ephemeral ports, run netstat as a scheduled task, script to log network connections
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Adding Realtek R8168 Driver to an ESXi 6.0 ISO
As part of my home lab I installed ESXi 6.0 on one of my older i5 Desktops, the PC has a Realtek 8168 network card built into the motherboard. I recently tried to upgrade it to ESXi 6.0 but it … Continue reading →...
Posted in VMware
Tagged async driver offline bundle r8168, Could not obtain module order from esximage db The installation profile could not be validated due to the following errors: VIB VMware_bootbank_net-r8168_8.013.00-3vmw.510.0.0.799733 is obsoleted by s, inject realtek r8168 driver into esxi 6.0, no network adapters were detected, Realtek 8168/8111/8411/8118
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Set up and troubleshoot SNMP on an ESXi 5.5 host
Here are some quick notes how to troubleshoot and set up SNMP on an ESXi host. The below also includes how to install snmpwalk and request info from an snmp server. STEPS HOW TO PROPERLY SET UP SNMP ON AN … Continue reading →...
Posted in Linux, Networking, Scripting, VMware
Tagged configuring snmp traps in esx/esxi 5.5, Continuous snmpwalk command, esxi snmp settings, how to set up snmp on esxi 5.1, how to test snmp polling on esxi host, snmpget and snmp plling not working esxi 5.5, snmpwalk -v 2c -O n -c public, Timeout: No Response from, troubleshoot snmp server polling snmpwalk esxi vcenter mib
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