RE: [Xen-users] VLAN in a Pool

[Faraz Khan <Faraz.Khan@xxxxxxx>]

I created a Network in XenCenter at the pool level.  The type I selected was 
"External Network".  I gave it a VLAN id of 3.  Then I attached this new 
network to my guest VMs.  Inside the guests I gave each NIC an IP address such 
as 10.0.1.x/255.255.0.0.  Then from one VM I pinged 10.0.1.x.  The ping get a 
response only if the two VMs are running on the same Xen Host.  If they are 
running on separate hosts but in the same pool and physically connected to a 
switch then the ping does not get any response.

In a sense Windows XP are aware of the VLAN because I gave them a proper IP 
address within the correct range, e.g. 10.0.1.5 and 10.0.1.6 with a subnet mask 
of 255.255.0.0.  But the real purpose of creating a VLAN is that if a 3rd 
Windows XP had an IP of 10.0.1.7 it should not be able to ping to the other 
two, because they are in a logically seperated vlan. 

-----Original Message-----
From: Ciprian Dorin, Craciun [mailto:ciprian.craciun@xxxxxxxxx] 
Sent: Sunday, April 11, 2010 11:56 PM
To: Pasi Kärkkäinen
Cc: Faraz Khan; xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] VLAN in a Pool

On Mon, Apr 12, 2010 at 9:33 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:

    From what I remember I was part of a network constructed only with
cheap switches (I'm 100% they were not VLAN aware), and VLAN worked
just perfectly without any "hardware" support. (Of course there was no
isolation based on VLAN id, which is one of the main features of using
VLAN's). (This was not Xen related.)

    I would say that the problem is from your Dom0's... When you put
the DomU's on the same machine do you still use VLAN? Or better said
is the WindowsXP aware of the VLAN's or the VLAN's are handled by the
Dom0? How did you setup the VLAN's?

    Ciprian.

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