Re: [Poptop-server] VPN too slow to use

[John H. <J....@pl...>]

On 26-Nov-2002 at 11:29:01 R. de Vroede wrote:
> On Tue, 2002-11-26 at 11:21, John Horne wrote:
>> On 25-Nov-2002 at 20:53:38 R. de Vroede wrote:
>> > In /etc/ppp/options.pptpd:
>> > mtu 1450
>> > mru 1450
>> > 
>> Is this right? I have 1490 in my options file for both mtu and mru.
>> Without the details, as far as I remember this was calculated from an
>> mtu of 1500 minus 10 for a header. (Very vague; many apologies.)
>
> That's correct. Some people also have an internet connection over pptp
> or pppoe, and when they lower their mtu and mru to say 1490, their
> connection is more stable. When they also run pptpd, that mru and mtu
> has to be lowered again by at least 10. So, to be on the safe side, I
> allways recommend 1450 for pptpd.
> 
From the PoPTop web site, under the documentation section, the 'Setting up
PPTPD on Linux Kernel 2.4 HOWTO', 'Poptop with ppp-2.4.1 and kernel 2.4.18'
and 'Setting up PPTPD VPN on Linux Kernel 2.4 HOWTO' docs indicate an
mtu/mru value of 1490 (the former stating when using W2K clients. Not too
sure why this should be specific for W2K). Should the values be changed, to
say 1450, in these docs to avoid problems as to what value should be used?


John.

------------------------------------------------------------------------
John Horne, University of Plymouth, UK           Tel: +44 (0)1752 233914
E-mail: jh...@pl...
PGP key available from public key servers