[pptp-server] PPTP with PPP in sync mode problem

Sang Yu sangadsl at kornet.net
Thu Aug 8 23:36:48 CDT 2002


Thanks you for your prompt response to this matter.

Generally speaking, Using the sync option can reduce pppd's CPU utilization
to about 1/4 and get more performance that async PPP like as PPPoE.

Thanks,
Sang

----- Original Message ----- 
From: "James Cameron" <james.cameron at hp.com>
To: "Sang Yu" <sangadsl at kornet.net>
Cc: <pptp-server at lists.schulte.org>
Sent: Friday, August 09, 2002 1:04 PM
Subject: Re: [pptp-server] PPTP with PPP in sync mode problem


> On Fri, 2002-08-09 at 13:42, Sang Yu wrote:
> > - Any version ppp with sync option does not pass pptp GRE packets and
> >   disconnected with an error LCP: timeout sending Config-Requests but 
> >   async ppp works well.
> 
> Don't use sync.
> 
> The PPTP server presumable has to do what the PPTP client does, which is
> re-encapsulate from asynchronous HDLC to GRE and vice-versa.  Last I
> checked, it doesn't handle sync.
> 
> Why would you want to use synchronous HDLC serial encoding?
> 
> -- 
> James Cameron                                     (james.cameron at hp.com)
> 
> http://quozl.linux.org.au/         (or)         http://quozl.netrek.org/
> 

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