Re: TCP Network packet Size

Declan O'Reilly wrote in message <34DE723F.F1AD6289_at_mcs.com>...
>We recently did a TCP network trace on our application and it shows some
>packets which have mode header info. then data i.e. our packets seen
>pretty small. Also the the TCP push flag in the trace is turned on ( I
>guess this means that the network will not necessarily wait for the
>packet to reach its full size). I was wondering how to increase the
>network packet size and turn off the TCP push flag.

I rcently saw a 3rd party TCP/IP config utility for Win95 and NT. I'm not sure how it works, but any settings should either be in an INI file or the registry. There are no real network configuration that can be done in either SYSTEM.INI or PROTOCOL.INI so that leaves the registry.

Looking thru the registry, I got the following keys containing TCP/IP settings:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Vxd\MSTCP - basic settings (e.g. domain name, TTL, enable/disable DNS)

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Vxd\NWLink\Ndi\params - contains cache size, force even and max connect and max socket settings

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Net - contains the network driver configuration (0000=first network driver)

The settings in the registry seems a bit primitive (unlike the old Novell Lan WorkPlace for DOS which TCP/IP you could really finetune!). But it's a start I think. Hopefully all the parameters are there somewhere in the registry. All it requires a some R&D, a lot of registry backups, and a couple of reboots to see what difference changing these parameters make. :-)

regards,
Billy Received on Wed Feb 11 1998 - 00:00:00 CST