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Which VLAN to include ESXi hosts

Posted on 2014-11-07
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Last Modified: 2014-11-10
We are designing a new network model and I want to ensure that my network is modeled after best practices.

vlan 5 - network devices

vlan 10 - servers (VMs)

Which vlan should I be putting my esxi hosts into? Please provide a reference. I've looked for documentation that talks about this and can't find anything.
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Question by:Paul Wagner
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by:Andrew Hancock (VMware vExpert / EE MVE)
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If it's being managed by vCenter Server, which VLAN would this server be in?

VLAN 10 ?

So put the hosts in a Different Management VLAN - 1!
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by:Paul Wagner
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vCenter will be in vlan10 with the other servers.
Is the vCenter server supposed to be in a different VLAN than the hosts?
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Andrew Hancock (VMware vExpert / EE MVE) earned 500 total points
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Okay, well in that case the Hosts need to be in VLAN10.

Some organisation put vCenter in a different VLAN,

BUT the Fact it has to be managed by vCenter and has that requirement, makes it difficult!

and therefore it must be in the same VLAN as vCenter Server.
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by:Paul Wagner
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Understood. Do you know where I can find documentation on this? I haven't been able to find anything in KB VMware.
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by:Andrew Hancock (VMware vExpert / EE MVE)
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As far as I know I've not seen any documentation on this, because it's common sense!

Both Host and Management server would need to be reachable on the network, and communicate between them should be ok.

If you want to read more on networking in VMware ESX/ESXi, then I recommend the following:-

I would also recommend reading through the Networking Sections of the following guides to gain a better understanding of Networking in VMware ESX/ESXi.

Pages 13 - 73 Discuss Networking in Detail, including trunks, VLANs, switches, and load balancing

ESXi Configuration Guide ESXi 4.1

http://www.vmware.com/pdf/vsphere4/r41/vsp_41_esxi_server_config.pdf

Virtual Networking

http://www.vmware.com/technical-resources/virtual-networking/virtual-networks.html

Virtual Networking Concepts

http://www.vmware.com/files/pdf/virtual_networking_concepts.pdf
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by:Paul Wagner
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@Andrew Hancock

Just wanted to ask a follow up question- Is it ok to include my tertiary (end-user) switches in the same VLAN as vCenter and the hosts or do they need to be separate. We're talking about an infrastructure of less than 300 users.
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by:Andrew Hancock (VMware vExpert / EE MVE)
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You can include them in the same VLAN or seperate.

It depends on how many IP Addresses, and subnet you have available for your servers.
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by:Paul Wagner
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I'll have enough IP's in the range. Just didn't know if it was a best practice to separate them. I'd rather keep them together for simplicity, unless of course there was some conflict or design reason not to.

Thanks!
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by:Andrew Hancock (VMware vExpert / EE MVE)
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Keep them together.
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