Layer2 VPN

[Dunc]

Andrew Thompson wrote:
> On Tue, Oct 03, 2006 at 11:41:07AM +0100, Dunc wrote:
>   
>> Hi folks,
>>
>> I've been trying to create a layer2 VPN using FreeBSD boxes as the gateways.
>>
>> The 2 methods I thought of are:-
>>
>> a) Create a tunnel between the 2 gateways using gif interfaces, and
>> bridge the gifs onto a real NIC.
>>
>> Both methods seem to work fine, unless I try and put 802.1Q traffic down
>> the VPN, in which case neither method works.
>>     
>
> This should work fine with vlan headers, do you have any indication of
> where the problem is? you may need to get packet dumps at the sending
> and receiving ends.
>
> Grab a tcpdump at the sending bridge0, sending interface, receiving
> interface, receiving bridge0. You can send them to me if you need help
> deciphering them.
>
>
> cheers,
> Andrew
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>   
Hi Andrew,

I couldn't see why it wouldn't either. It's just an ethernet frame with 
an extra field filled in AIUI

I did do dumps earlier, and the problem seemed to be around about the 
bridge device at the far end as I pinged, however I will start again 
from scratch tomorrow and get some data. I was on a bit of a mission 
today as I need to have a working solution soon, so I tried combinations 
of OS and tunnel techs. The only actual success I have had so far is 
Linux with OpenVPN in tap mode.

Anyway, thanks for your help so far and I shall return.

Cheers,

Dunc