Re: [Xen-users] VLAN guest networking: near 100% packet loss

["Fajar A. Nugraha" <list@xxxxxxxxx>]

On Fri, Jan 8, 2016 at 11:46 AM, Pavan Maddamsetti
<pavan.maddamsetti@xxxxxxxxx> wrote:
> Dom0 network configuration is:
>
> auto xenbr0
> iface xenbr0 inet manual
>     bridge_ports eth1
>     bridge_stp off
>     bridge_waitport 0
>     bridge_fd 0
>
> auto xenbr0.4
> iface xenbr0.4 inet static
>     address 192.168.4.13
>     broadcast 192.168.4.255
>     netmask 255.255.255.0
>     gateway 192.168.4.1
>     vlan-raw-device xenbr0

so xenbr0 -> the bridge, trunk

xenbr0.4 -> a vlan created on top of the bridge?

> The configuration file in /etc/xen/ contains the line:
>
> vif = ['bridge=xenbr0,mac=00:16:3e:40:27:fa,ip=192.168.4.21']

you bridge the guest to xenbr0

> auto eth0
> iface eth0 inet static
>     address 192.168.4.21
>     broadcast 192.168.4.255
>     netmask 255.255.255.0
>     gateway 192.168.4.1

... and yet you tell it to use the same geteway as as xenbr0.4.

Obviously that won't work.

> Does anyone have experience configuring VLANs with the bridge interface?


Either:
- bridge the TRUNK, do NOT create the vlan interface (xenbr0.4) in the
host, and create the vlan interface in the guest (eth0.4). OR
- create a vlan interface on the host (eth0.4), and then create a
bridge on TOP of that (e.g. xenbr4), and configure the guest interface
(eth0) the way you did

-- 
Fajar

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