[ovs-dev] [PATCH] FAQ: Explain why VMs on a VLAN can't access the Internet.

[Kyle Mestery (kmestery)]

On Mar 21, 2013, at 5:26 PM, Ben Pfaff <blp at nicira.com> wrote:

> Signed-off-by: Ben Pfaff <blp at nicira.com>
> ---
> FAQ |   14 ++++++++++++++
> 1 file changed, 14 insertions(+)
> 
> diff --git a/FAQ b/FAQ
> index 90d0003..d9224fa 100644
> --- a/FAQ
> +++ b/FAQ
> @@ -714,6 +714,20 @@ A: It is to be expected that the VMs can't access each other.  VLANs
>    the machines you are trying to access are not on VLAN 9 (or 10) and
>    that the Internet is not available on VLAN 9 (or 10).
> 
> +Q: I added a pair of VMs on the same VLAN, like this:
> +
> +       ovs-vsctl add-br br0
> +       ovs-vsctl add-port br0 eth0
> +       ovs-vsctl add-port br0 tap0 tag=9
> +       ovs-vsctl add-port br0 tap1 tag=9
> +
> +    The VMs can access each other, but not the external network or the
> +    Internet.
> +
> +A: It seems likely that the machines you are trying to access in the
> +   external network are not on VLAN 9 and that the Internet is not
> +   available on VLAN 9.
> +

Maybe add this after what you have:

Ensure VLAN 9 is setup on the upstream switch port which eth0
is connected to, either as an access VLAN or as an allowed trunk
VLAN.

With that, looks good to me.

Acked-by: Kyle Mestery <kmestery at cisco.com>

> Q: Can I configure an IP address on a VLAN?
> 
> A: Yes.  Use an "internal port" configured as an access port.  For
> -- 
> 1.7.10.4
> 
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