tcp-ip under ISC 386/ix

[david nugent]

Does anyone have a solution to the following problem?  You can help
particularly if you've used ISC's tcp-ip...

After configuring the Unix kernel to accept 32 telnet sessions, it
seems as though we are still unable to raise more than 17 sessions.

The software is set up as follows:

	. Using GARP on a Novell 2.15 server, which acts as a bridge
	  to the Unix system; workstations on the Novell side use a
	  modified version of NSCA telnet and IPXIP to access to Unix
	  host.  We are assured by the distributors of GARP (who are
	  Micronetworks in Sydney, Australia) that GARP is currently
	  working on a number of sites with a variety of hosts with
	  much more than 17 sessions - it's internal limit is 128
	  workstations, allowing multiple sessions per workstation.

	. ISC 386/ix running on a 33MHZ 386 box with 16meg of RAM,
	  the streams package configured up to maximum (as are many
	  other packages).

Specific modifications to the kernel were made as follows:

	. Increasing the number of pty and ptx sessions in the following
	  files:
			/etc/conf/cf.d/mdevice
			/etc/conf/sdevice.d/pty & ptx

	. Modifying various parameters in /etc/conf/tmp/config.h, related
	  to pty and ptx devices.

	. Entering device names in /etc/conf/node.d/pty and ptx, and
	  using mknod to create those devices in /dev (specifically,
	  the devices were pttyq0 - pttyqf and ttypq0 - ttypqf)

	. Editing /etc/conf/pack.d/pty/space.d, changing the #define NPTY
	  up from 16 to 32.

	. Using kconfig to modify the NUMTIM tuneable paraneter to 32.

According to ISC's technical bulletins and their Australian distributor,
it seems that we've done everything required to enable 32 sessions.  The
above modifications managed to increase the number of possible telnet
sessions from 16 to 17, but no more.  The last attempt at logging on
for the 18th session results in that session 'hanging' and eventually
timing out on the telnet side.

I can't help get the feeling that I'm missing one or two small elements
to complete the modifications to the kernel.  Looking through every
file possible under /etc/conf didn't seem to help much either, so any
extra information anyone might offer is indeed welcome.

david