[pptp-server] PPPD stalling on 2.2.11 + tcp patches

[Philip Van Baren]

James,

You might try change the value for the packet receive window size.  In
version 0.9.4 this was 2, in 0.9.5 through 0.9.9 it was 1, and in 0.9.10 and
above it echoes back the same value as the other side uses.

In my setup I found that using 1 results in significantly reduced
performance, 2 through 8 work ok, and values higher than 8 result in
flooding of the network, lots of lost packets, and poor performance.

I would recommend changing the pckt_recv_size setting in ctrlpacket.c to 4
and then recompiling:

---- ctrlpacket.c ------------
        /* lets match their window size for now... was
htons(PKT_RECV_WINDOW_SIZE)
         */
        out_call_rply.pckt_recv_size = htons(4); /*was:
out_call_rqst->pckt_recv_size;*/
------------------------

Phil

> -----Original Message-----
> From: pptp-server-admin at lists.schulte.org
> [mailto:pptp-server-admin at lists.schulte.org]On Behalf Of James B.
> MacLean
> Sent: Monday, August 16, 1999 11:56 AM
> To: pptp-server at lists.schulte.org
> Cc: Alan.Cox at linux.org
> Subject: [pptp-server] PPPD stalling on 2.2.11 + tcp patches
>
>
> Hi Folks,
>
> Alan Cox directed me to patches for the 2.2.11 kernel re the abend I
> posted yesterday.
>
> Today I am testing again and the pppd link on my 2.2.11+patches box
> stalls.
>
> pings get from my host to the pptpd host and the pptpd host puts the reply
> back on ppp0 (according to tcpdump). But it never reaches back to my side.
>
> All other traffic from the pptpd host comes to an almost complete stop
> :(. Traffic to the host seems to travel ok.
>
> On a 2.0.37 host it all cruises right along with basically the same config
> files.
>
> Anyone else getting same, or suggest where I can check, or who I should
> ask? :)
>
> thnxs,
> JES
> --
> James B. MacLean        macleajb at ednet.ns.ca
> Department of Education http://www.ednet.ns.ca/~macleajb
> Nova Scotia, Canada
> B3M 4B2
>
>
> _______________________________________________
> pptp-server maillist  -  pptp-server at lists.schulte.org
> http://lists.schulte.org/mailman/listinfo/pptp-server
> List services provided by www.schulte.org!
>