Re: [Xen-users] VLAN in a Pool

["Ciprian Dorin, Craciun" <ciprian.craciun@xxxxxxxxx>]

2010/4/12 Faraz Khan <Faraz.Khan@xxxxxxx>:
> I created a Network in XenCenter at the pool level. ÂThe type I selected was 
> "External Network". ÂI gave it a VLAN id of 3. ÂThen I attached this new 
> network to my guest VMs. ÂInside the guests I gave each NIC an IP address 
> such as 10.0.1.x/255.255.0.0. ÂThen from one VM I pinged 10.0.1.x. ÂThe ping 
> get a response only if the two VMs are running on the same Xen Host. ÂIf 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.

    Unfortunately I'm unaware of XenCenter. (I use the "raw" Xen, in
the sense I configure it by using /etc/xen/xend-config.spx, and other
configuration files...)

    Sorry,
    Ciprian.


> 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. ÂBut 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 KÃrkkÃinen
> Cc: Faraz Khan; xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] VLAN in a Pool
>
> On Mon, Apr 12, 2010 at 9:33 AM, Pasi KÃrkkÃinen <pasik@xxxxxx> wrote:
>
> Â ÂFrom 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.)
>
> Â ÂI 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?
>
> Â ÂCiprian.

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