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How Distributed Virtual Switch connect to physical Network

Posted on 2014-01-14
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if I understand Standard virtual switch is per HOST ESX, SVS is connected to the physical Nic of the ESX.

DVS, can span multiple ESX servers, in this case does DVS connects to all physical Nic of all ESX servers? any snapshot on this will be very helpful.


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Question by:jskfan
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by:Abhilash
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Like how you assign a NIC to your standard switch from a particular host, You will be connecting Multiple NICs as uplinks from every host a distributed switch spans across.

Here is an example
https://communities.vmware.com/servlet/JiveServlet/showImage/2-1823846-15875/vmware_multiple_vds.JPG
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by:Abhilash
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If you see this below image
https://blogs.vmware.com/tp/.a/6a00d8341c328153ef0120a6450d4d970c-pi

You will see that every port group you create on the distributed switch will have an uplink from all the hosts that participate in the vDS.

In the above example demoesx01 and demoesx02 are the two hosts. dvDemovlan and dvServervlan are the two portgroups on vDS(vDistributed Switch)
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by:jskfan
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Just curious..

for standard switch, I thought the Virtualization application that present the Standard Vswitch is located at at ESX server level….
for Distributed Vswitch, I am not sure at what level is the Virtualization Application that presents the Dvswitch  to all ESX servers is located,
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by:Abhilash
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Yes for a standard switch the configuration is located on the ESXi Host.
For vDS vCenter helps you create a distributed switch adn every host will have a copy of the configuration file.
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by:jskfan
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Actually I was trying to understand The Virtualization application that spans all ESXi hosts and presents the Dvs so that we can configure it and view it from Vcenter..

I believe Vcenter is just a tool we use to configure and view the virtual infrastructure, but there must be an application that ties up the Dvs to all ESXi hosts, in other words where is the DVs physically located.
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AFAIK its done by vCenter. There is no virtualization application. Its all done by VMware vCenter. ITs not just a tool just for centralized management. It adds most of the features to ESXi hosts. vMotion,FT,High Availability and vDS all are handles and configured using vCenter. Of course all are done by some agents and modules. But they are all put onto ESXi using vCenter.
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by:jskfan
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Thank you
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