topic Re: max ip sessions in Operating System - HP-UX

max ip sessions

Ceesjan van Hattum — Fri, 24 May 2002 14:14:22 GMT

Hi,
Is there some setting to be used to set a max concurrent ip sessions?
If so, where to do?

Thnx in adv.
Ceesjan

Re: max ip sessions

Ceesjan van Hattum — Fri, 24 May 2002 14:15:15 GMT

Sorry, this posting should not be in databases, but sysadmin.
CJ

Re: max ip sessions

Bill McNAMARA_1 — Wed, 29 May 2002 08:08:14 GMT

Possibly through ndd, although I'm not certain.

Later,
Bill

Re: max ip sessions

Ravi_8 — Wed, 29 May 2002 08:21:47 GMT

Hi,

I am not sure, but i think it is 'telnrts' parameter

Re: max ip sessions

Steve Steel — Wed, 29 May 2002 08:24:21 GMT

Hi

i doubt if ndd will do but since i am not clear on how tyhe connections you want are made and what trouble you have.

ndd -h supported

gives

SUPPORTED ndd tunable parameters on HP-UX:

If this is not enough please clarify your problem.

Steve Steel

Re: max ip sessions

Steven Sim Kok Leong — Wed, 29 May 2002 08:38:06 GMT

Hi,

You can set the maximum number of outstanding inbound connection requests for all inbound connection requests, be it tcp, udp, icmp, igmp etc.

# ndd -h tcp_conn_request_max

tcp_conn_request_max:

Maximum number of outstanding inbound connection requests.
[1, - ] Default: 20 connections

For telnet sessions, the kernel parameter nstrtel restricts the number of telnet sessions. For ssh, telnet, rlogin etc terminal sessions that require ptys, you can use nstrpty, npty kernel parameters to limit the number of ptys used.

Apart from that, you can only set at the application side (eg. in database init.ora).

Hope this helps. Regards.

Steven Sim Kok Leong

Re: max ip sessions

Steven Sim Kok Leong — Wed, 29 May 2002 08:49:59 GMT

Hi,

My mistake. It is only applicable for TCP connections (not for rest of protocols UDP, ICMP etc):

# ndd -h tcp_conn_request_max

tcp_conn_request_max:

Maximum number of outstanding inbound connection requests.
[1, - ] Default: 20 connections

Hope this helps. Regards.

Steven Sim Kok Leong

Re: max ip sessions

Bill Hassell — Wed, 29 May 2002 12:23:42 GMT

The ndd (or nettune on the old 10.20 systems) refers to low-level connection protocol and not the number of users that can connect using something like telnet. If you are referring to the number of users that can login at the same time, that is controlled by 3 kernel parameters:

npty
nstrpty
nstrtel

(for 10.20, nstrtel does not exist). Change these kernel parameters using SAM (recommended) and make them all the same. The default is 60 so I would change the values to 200 if you expect 100-150 users to login. SAM will also take care of making the required device files. If you change the parameter by hand and do not run insf to create the additional device files, the limit will be the number of device files.