Two vSwitch or Two Port Group

[Kasraeian]

Hi,

I have a question. I want to know when we should use one vSwitch with 2 portgroup and when we should use 2 vSwitch with one portgroup in each one.

I would be grateful If anyone could help me with this question with different scenarios.

Thanks for your help and your consideration.

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[AndreTheGiant]

Just some examples:

• you have two physical networks -> 2 vSwitches

• you have two different locical networs on the same physical switches -> you can use more portgroup on a same vSwitch

Andre

[AntonVZhbankov]

If you want to share physical NICs between portgroups for load balancing or failover - one vSwitch.

Otherwise two vSwitches.

---

MCSA, MCTS, VCP, VMware vExpert '2009

http://blog.vadmin.ru

[Kasraeian]

Thanks for reply

So, let see if I get it right, for example, If I have Server which one of its VM should work as Firewall or Cache, It's better to have two vSwitch.

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[AndreTheGiant · Accepted solution]

For a dual homed firewall or proxy, the answer is yes.

Andre

[Troy_Clavell]

this is fantastic information you should keep bookmarked in my opinion

http://kensvirtualreality.wordpress.com/2009/03/29/the-great-vswitch-debate-part-1/

[Kasraeian]

For this thread, did I get the correct answer?

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[AndreTheGiant]

Yes.

If you have two different network and you want to build a VM that act as firewall/gw/proxy you may use 2 (or move) virtual NIC, each on a different portgruop.

If you have different physical network (like in the example, if you want to isolate the LAN from the Internet), thant you have to use 2 portgroup on 2 different vSwitches.

Andre

[Kasraeian]

Thanks everyone, I get my answer and of course I'll Bookmark it in my FF and my Google for sure.

Again Thanks

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