VPN Problems - HELP!

Here is our scenario. We have a head office in London with a SBS
server running a SQL database and exchange. We have a 1meg leased
line with a draytek 2900 handling VPN connections. the 2900 has PPTP
dial in connection profiles setup to allow the remote sites to dial
in.

One of the remote sites (in spain) is running 5 x Avaya IP phones
(connecting to the head office phone system) and using a terminal
server (in the head office) to run the SQL database and read emails.
They have ADSL (1MB up 256k down).

The problem is that although the VPN stays up constantly with very
little disruption our users in spain report that the quality of phone
calls is poor and the terminal server will respond slowly (which is
definatley not a performance problem, for example if we connect from
another VPN site the TS responds perfectly.) Also the spain users can
use the TS over companyweb and it works fine.

Any advice on this or any other suggestions? QoS has been suggested
but we have little/no experience of implementing it......

Are the Drayteks sophisticated enough to cope with this VPN traffic?

Any help much appreciated.

Lee,
Quick response: you need QoS to have decent TS or VOIP over VPN. The reason
is simply that if someone does so much as transfer a file (for example
opening an attachment in e-mail) then the line becomes saturated. With QoS,
and with enough bandwidth, the performance is fine.
I have never come across the draytek, and it might be a perfectly OK device.
You will have to learn how to set up QoS on it,
Anthony
http://www.airdesk.co.uk

<(E-Mail Removed)> wrote in message
news:(E-Mail Removed) oups.com...
> Here is our scenario. We have a head office in London with a SBS
> server running a SQL database and exchange. We have a 1meg leased
> line with a draytek 2900 handling VPN connections. the 2900 has PPTP
> dial in connection profiles setup to allow the remote sites to dial
> in.
>
> One of the remote sites (in spain) is running 5 x Avaya IP phones
> (connecting to the head office phone system) and using a terminal
> server (in the head office) to run the SQL database and read emails.
> They have ADSL (1MB up 256k down).
>
> The problem is that although the VPN stays up constantly with very
> little disruption our users in spain report that the quality of phone
> calls is poor and the terminal server will respond slowly (which is
> definatley not a performance problem, for example if we connect from
> another VPN site the TS responds perfectly.) Also the spain users can
> use the TS over companyweb and it works fine.
>
> Any advice on this or any other suggestions? QoS has been suggested
> but we have little/no experience of implementing it......
>
> Are the Drayteks sophisticated enough to cope with this VPN traffic?
>
> Any help much appreciated.
>

Cheers Anthony,

What we have done is changed the tunneling protocol from PPTP to L2TP
and the connection seems to have sped up??

>From the reading we have done we cannot see how this is possible?

Any help?

You will still need QoS to protect the VoIP and TS connections. Do you have
a Draytek at both ends?
Anthony
http://www.airdesk.co.uk


"LeeBoy" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) ups.com...
> Cheers Anthony,
>
> What we have done is changed the tunneling protocol from PPTP to L2TP
> and the connection seems to have sped up??
>
>>From the reading we have done we cannot see how this is possible?
>
> Any help?
>

Yes they are Drayteks both ends. Any thoughts on how changing the
protocols has affected the issue?

No, couldn't tell you I'm afraid. The choice of protocol will not protect
VoIP or TS traffic, and the Draytek seems to provide QoS,
Anthony
http://www.airdesk.co.uk





"LeeBoy" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) ups.com...
> Yes they are Drayteks both ends. Any thoughts on how changing the
> protocols has affected the issue?
>