Vlans, 802.1q et.al. in workstation

[#1]

I've been unable to find a concrete answer to my question: "can I use vlans in workstation" so I've researched on my own and here, for the record, are the results:

1- You can asociate a vnic to a host vlan. That depends on your host OS, obviously. But is doable in linux and I would expect is also doable in windows.

2- (Updated) You can have VGT, i.e. guest trunks or guests talking 802.1q. If your guest is running windows, pay attention to tag stripping that is done by several drivers. If you install an intel PROdriver for the e1000, you get vlan interfaces or you can enable MonitorMode to let vlan tags pass (for, e.g., run wireshark and see them). See http://www.intel.com/support/network/sb/CS-005897.htm for a reference.

HTH

[dsmith004]

HTH,

I just joined the Workstation group. Just out of curiosity, what were you attempting to do with tagging?

Cheers,

Dale

[TronAr]

Hi Dale,

in particular, I was labbing a Nexux 1000v inside Wks, but it is sometimes useful in lab scenarios to have one server that has vlan access to segments that other workstations (also virtual in lab setup) should get access to.

I ended up having a real switch doing the 802.1q tagging.

Regards,

-Carlos

[dsmith004]

Interesting. I've been trying to find a way to create multiple VLAN tagged NEs in a virtual environment to demonstrate QoS with Ethernet over SONET. What I've run into is layer II switching can't be emulated because of ASICs.

Thanks for the response.

Dale

[TronAr]

Sure.

The part I don't understand is the ASICs relation. I would have thought that all VM net access was software managed.

So tagging/untagging would just be a matter of keeping the vlan maps and doing it.

Piece of cake

-Carlos

[Hanzcho]

Could you please explain your exact set up? I can see the VLAN tags on my host machine and i have my guest network card bridged to that host network card, but i cannot see the vlan tags in wireshark within the guest.

I'm using the vmxnet3 driving for the guest machine.

Thanks,

[TronAr]

Have you looked into the Intel notice that I referred to ?

Please use e1000 instead of vmxnet3, I don't know what kind of VGT does the vmxnet3 driver have.

BTW, this is a 7 years old post, no memory of any kind related to "exact setup"