Re: TcpOpen(): setsockopt(SO_SNDBUF): errno = 74

     We also got this error when TCPWindowsize in /usr/lpp/adsm/bin/dsm.sys
was greater than TCPWindowsize in /usr/lpp/adsmserv/bin/dsmserv.opt.  I made
them both the same & the error went away.

Becky Herbison
Thomson Consumer Electronics

 ----------
From: Andy Raibeck
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: TcpOpen(): setsockopt(SO_SNDBUF): errno = 74
Date: Monday, February 17, 1997 1:30PM


Cheryl Blacher asks:

>Hello,
>The following error comes up in many of my error logs, all the time.
>Can anyone tell me where to start?

>02/17/97   00:35:20  TcpOpen(): setsockopt(SO_SNDBUF): errno = 74
>02/17/97   00:35:20  TcpOpen(): setsockopt(SO_RCVBUF): errno = 74
>02/17/97   00:35:20  TcpOpen(): setsockopt failed on one or more options

Hello Cheryl,

You're TCPWINDOWSIZE setting is too high. I don't know about other UNIX
platforms, but on AIX, the "sb_max" setting dictates the highest
TCPWINDOWSIZE
you can use. If it's AIX, you can check "sb_max" by issuing the "no -a"
command. TCPWINDOWSIZE must no greater than "sb_max". So you can either
increase "sb_max" or decrease TCPWINDOWSIZE. Note that "sb_max" is
expressed
in bytes and TCPWINDOWSIZE is expressed in KB. So if "sb_max" shows as
65535, then TCPWINDOWSIZE must be 64 or less.

Hope that helps,

Andy Raibeck
ADSM Level 2 Support