Configuring Advanced Server for UNIX Configuring NetBIOS
Product Manual U7613-J-Z815-6-76
© Siemens Nixdorf Informationssysteme AG 1995 Pfad: D:\O7613e6\u7613e.k05
5.1.5 Configuring NetBIOS Startup Parameters
Since AS/X V4.0B, the startup options for nbrfcdaemon are presently confi gured in the
/var/opt/nbrfc/conf/nbrfcdaemon.cfg file. Default is “-l2 -f20 -n”. If the file does not exis t, it will
be created automatically. Changes to this file are not overwritten during an upgrade instal-
lation.
The following startup parameters of the NetBIOS daemon can be configured by the a dmin-
istrator:
-n This option instructs TCP not to wait for ACK of the previous small packet, rather to
send the next small packet immediately. The Nagle algorithm is thus disabled. This
avoids the delay of waiting for the ACK at the expense of less efficient utilization of
the physical medium.
In earlier AS/X v ersions, this functionality was configured in the “tcp_nodelay”
parameter in the lanman.ini file. This parameter is no longer supported.
Reliant UNIX-N V5.4 3C0 still does not support this parameter. You will therefore
have to use a single correctional release in this case. For f urther details, refer to the
information supplied in the release notice in the SIreadmeM packa ge.
-l <number of outstanding connect indications>
Specifies the maximum number of simultaneously outstanding connect indicati ons.
The period of time that normally elapses between the setup being requested and
the actual connection being set up is usually quite small, with the result th at an
additional setup request is generally possible. If the maximum nu mber is reached
and the setup requests are tied up for too long, faulty network configurations are
often the reason. Please contact your Support Center in this case .
Default: 2, Maximum: 5
-f <number of preliminary sessions>
Specifies the number of NetBIOS sessions that the NetBIOS daemon always keeps
on hold in order to speed up the connection setup. A bottleneck with these pr elim-
inary sessions is logged in syslog and also displayed with the nbrfcdiag -f command.
The parameter can be increased in this case although this ties up additiona l
resources. Your Support Center will be able to tell you the optimal setting. Default:
20
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