To support VLANs for VMware Infrastructure users, the virtual or physical network must tag the Ethernet frames with 802.1Q tags using virtual switch tagging (VST), virtual machine guest tagging (VGT), or external switch tagging (EST). If you’re looking for how to configure VLAN tagging in VMware vSphere, you may refer to VMware KB 1004074 & KB 1004252.
Last week I have configured a VLAN tagging on one of my vSphere 4 Update 2 cluster and due to some reason, I have remove the VLAN ID manually.

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VMware have been released VMware vCenter 4.0 Update 2 & VMware vSphere 4.0 Update 2 on 10 June 2010.
Latest version:
vCenter Server 4.0 Update 2 (Build 258672)
vSphere Client 4.0 Update 2 (Build 258672)
ESX 4.0 Update 2 (Build 261974)
VMware Tools (Build 261974)
What ‘s new about VMware vCenter 4.0 Update 2:
- Guest Operating System Customization Improvements: vCenter Server now supports customization of the following guest operating systems:
- Windows XP Professional SP2 (x64) serviced by Windows Server 2003 SP2
- SLES 11 (x32 and x64)
- SLES 10 SP3 (x32 and x64)
- RHEL 5.5 Server Platform (x32 and x64)
- RHEL 5.4 Server Platform (x32 and x64)
- RHEL 4.8 Server Platform (x32 and 64)
- Debian 5.0 (x32 and x64)
- Debian 5.0 R1 (x32 and x64)
- Debian 5.0 R2 (x32 and x64)
- Resolved Issues:In addition, this release delivers a number of bug fixes that have been documented in theResolved Issues section.
What ‘s new about VMware vSPhere 4.0 Update 2:
- Enablement of Fault Tolerance Functionality for Intel Xeon 56xx Series processors— vSphere 4.0 Update 1 supports the Intel Xeon 56xx Series processors without Fault Tolerance. vSphere 4.0 Update 2 enables Fault Tolerance functionality for the Intel Xeon 56xx Series processors.
- Enablement of Fault Tolerance Functionality for Intel i3/i5 Clarkdale Series and Intel Xeon 34xx Clarkdale Series processors— vSphere 4.0 Update 1 supports the Intel i3/i5 Clarkdale Series and Intel Xeon 34xx Clarkdale Series processors without Fault Tolerance. vSphere 4.0 Update 2 enables Fault Tolerance functionality for the Intel i3/i5 Clarkdale Series and Intel Xeon 34xx Clarkdale Series processors.
- Enablement of IOMMU Functionality for AMD Opteron 61xx and 41xx Series processors— vSphere 4.0 Update 1 supports the AMD Opteron 61xx and 41xx Series processors without input/output memory management unit (IOMMU). vSphere 4.0 Update 2 enables IOMMU functionality for the AMD Opteron 61xx and 41xx Series processors.
- Enhancement of the esxtop/resxtop utility— vSphere 4.0 Update 2 includes an enhancement of the performance monitoring utilities, esxtop and resxtop. The esxtop/resxtop utilities now provide visibility into the performance of NFS datastores in that they display the following statistics for NFS datastores: Reads/s, writes/s, MBreads/s,MBwrtn/s, cmds/s, GAVG/s(guest latency).
- Additional Guest Operating System Support— ESX/ESXi 4.0 Update 2 adds support for Ubuntu 10.04. For a complete list of supported guest operating systems with this release, see the VMware Compatibility Guide.
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I manage to capture some screen shot to share over the Cisco UCS platform running with VMware vSphere 4

Summary tab it shows Cisco as the product manufacturer.

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Referring to NTPRO Download Chrome OS VMware image post, I’m managed to get Chrome OS running on vSphere update 1 as screen below:

Please make sure you have selected Other 2.6x Linux 32bit as per your guest OS.
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VMware ESX 4.0 Update 1(Build 208167) was released on 19 Nov 2009 and I did a patch update on 3 of my vSphere Dev Servers included of 1 ESX (build 164009) server and 2 ESXi (build 164009 & 171294) servers on Dell PE2950 today.
The Redhat Linux and Windows 2003 & 2008 Virtual Machines VMware tools upgraded successful and everything look goods after the Update 1 patched.
I would suggest you refer to VMware Communities – vSphere Upgrade and Install forum & “vSphere 4u1 – any issues” thread before apply any VMware vSphere ESX/ESXi Update 1 patches on production environment.
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