Re: [Xen-users] different vlans in a domU

[kanour-xen <xen@xxxxxxxxxx>]

Dominique Rousseau wrote:
> Le Wed, Nov 21, 2007 at 06:29:46PM +0100, Sebastian Reitenbach 
> [sebastia@xxxxxxxxxxxxxxxxxxxx] a écrit:
> [...]
> > I added a bridge1 in the dom0, created a vlan interface on the dom0, added 
> > that to the bridge1. Then I added a second interface to the domU, assigned 
> > it to the bridge1.
> > Now I have a bridge0, where I can communicate with untagged vlan packets, 
> > and a bridge1 that allows me to communicated with the domU with tagged vlan 
> > packets. 
> > For all the vlan's I want to use, I have to create a bridge interface on the 
> > dom0.
> > This is working.
> That's only way I managed to get VLANs to work with vifs.
>
> A few months ago, there was a thread on the subject, there is some MTU
> limit in the vif code that don't allow tagged frames (that are larger
> thant 1500 bytes) to go through.
Hi.

I have it also on bridges. I have 3 nics. I have bridge on each:
$XENDIR/network-bridge "$@" netdev=eth0 bridge=xenbr0 vifnum=0
$XENDIR/network-bridge "$@" netdev=eth1 bridge=xenbr1 vifnum=1
$XENDIR/network-bridge "$@" netdev=eth2 bridge=xenbr2 vifnum=2

Then I have in DomU (debian stable) configuration for vlans and 
everything works fine.
#auto eth0 vlan2 vlan3 vlan4
# VLAN 1 - native management VLAN
iface eth0 inet static
  address 192.168.31.254
  netmask 255.255.255.0
  vlan_raw_device eth0

# VLAN 2 - ADSL Modem VLAN
iface vlan2 inet static
  address 192.168.1.5
  netmask 255.255.255.0
  vlan_raw_device eth0

# VLAN 3 - DMZ VLAN
iface vlan3 inet static
  address 60.241.247.213
  netmask 255.255.255.248
  vlan_raw_device eth0

# VLAN 4 - IntNet VLAN
iface vlan4 inet static
  address 192.168.30.254
  netmask 255.255.255.0
  vlan_raw_device eth0


Jiri

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