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VMWare ESXi

Posted on 2009-07-08
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Last Modified: 2012-05-07
we are running VMWare ESXi.  There are the virtual machines.  All three worked and could access the public network.  Suddenly we rebooted one of the three machines and now none of them can access the public network.  Everything looks normal and nothing has changed.  We have rebooted the host machine with no luck.  Anyone have any ideas for us?
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Question by:cssunetadmin
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Expert Comment

by:vmwarun - Arun
ID: 24809399
I suggest that you check the pNICs connected to the ESX Host.

Connect to the Host using VI Client and check whether the pNICs (physical NICs) are all connected properly.
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by:dnilson
ID: 24809585
Unless the three machines were routing through the fourth, this make no sense.

remember - each phys NIC must have its own vswitch
the LAN NIC through whch you manage the host must have a service console
the guests must each have a virtual NIC assigned, and that vNIC needs to be the LAN

ESX supports internal netwoking (Host ONLY) busses which if used, do not connect out to a physical NIC, make sure your nic does not use that.

How about a littel vnic config from the guests.

Are they static or DHCP?

What does ipconfig /all show on them, are they getting n IP as expected.

how is DNS provisioned, can you see it?

==================================
Bottom line - make sure there is a vSwitch connected to a LAN NIC that goes where you want it to.
Make sure all guests use that logical network in the VM settings, set all NICS to bridged, mode.

At this point they will troubleshoot like a standalone harware PC, and the fancy stuff can get piled on later.

here is a diagram, just look at theh first vSwitch listed and set your host up to look like the LAN vswitch and post your results so we can close the information gap here.
esx-netmap.bmp
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Expert Comment

by:dnilson
ID: 24809589
Oh yes, my system uses two pysical NICS per netwok, you dont need to duplicate that one will do for this.
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Accepted Solution

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cssunetadmin earned 0 total points
ID: 25483559
We talked with VMWare support for assistance.  Not exactly sure what they did to fix the problem.
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