Re: [Xen-devel] Xen and VLANs

["Fajar A. Nugraha" <fajar@xxxxxxxxxxxx>]

Evan Bigall wrote:

> I am using Xen 2.0 with Mandrake 10.1 based hosts and guests.
>
> There seems to be some sort of issue with VLANs and MTUs?
Why bother use VLANS in dom-U?

> My VMs have two nics, each connected to a separate bridge.
>
> In Dom1, I do:
> vconfig add eth1 5
> ip addr add 10.20.8.17/24 broadcast 10.20.8.255 dev eth1.5
> ifconfig eth1.5 up
>
> In Dom2, I do:
>
> vconfig add eth1 5
> ip addr add 10.20.8.18/24 broadcast 10.20.8.255 dev eth1.5
> ifconfig eth1.5 up
>
> Pinging from Dom2 to Dom1, packet sizes smaller than 1469 work, packet 
> sizes of 1469 and larger just hang.
> If I set the MTU on the interface down to 1450, I can then ping with 
> any packet size.
> Has any done any experimentation with VLANs on Xen?  A problem is that 
> the bridge does not support VLANs but I'm trying to work around that 
> in a variety of ways.
I use bridge, setup VLANS on Domain-0, and bridge each eth0.x on 
Domain-0 to ethy on dom-U.
That way dom-U only sees eth0, eth1, eth2, and so on. It works flawlessly.

Regards,

Fajar


-------------------------------------------------------
This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting
Tool for open source databases. Create drag-&-drop reports. Save time
by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc.
Download a FREE copy at http://www.intelliview.com/go/osdn_nl
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/xen-devel