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07-22-2002 11:06 PM
07-22-2002 11:06 PM
Printer connection down
They can only use the network printer. The network printer can still be used if the connection printer down happens.
If we do a lpstat -t command there will be a lot of connection printer down message appear. For the remote printer we use the omniprint software at the client side. If we ping to the remote printer the network is still alive. When we check using the command below:
# netstat -an|grep FIN_WAIT_2|wc -l
The figure will be around 499. This is what we notice. If it is less than 499 the connection printer down won't happen.
Somebody did suggest to add or modify some tcp settings in the /etc/rc.config.d/nddconf file. The problem is I could not find a nddconf file in the /etc/rc.config.d directory.
Appreciate your help on the above problem.
Thanks for helping.
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07-22-2002 11:14 PM
07-22-2002 11:14 PM
Re: Printer connection down
Using ndd to modify your TCP settings requires a file called /etc/rc.config.d/nddconf on 11.0, if you dont have this file I take it you are not running HP-UX version 11.0 ? If youre using 10.20 the commands to do this are completely different.
If you are running 11.0 you can copy the nddconf file from /usr/newconfig/etc/rc.config.d/ to /etc/rc.config.d then make your changes and reboot.
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07-23-2002 01:18 AM
07-23-2002 01:18 AM
Re: Printer connection down
FIN_WAIT_2 state
on certain sockets , are there sockets all spawened from or related to the printing process ??? if so there might be some other issue , FIN_WAIT_2 is in fact part of the normal end of connection procedure , when seting up a network call this is waht happens
SYN
SYN ACK
ACK
.
.
normal data transfer
.
.
FIN
FIN ACK
FIN_WAIT_1 STATE
FIN ACK
FIN_WAIT_2 STATE
ACK
end of normal communication , this means that during the discoinnect phase of the socket seen probably something goes wrong and the end device (printer) didn't manage to send the apprpiate message ending the communication , this leaves lots of open session that take up spece on the system in vain ... this could popint to a more genetral network problem or even a device issue , strange that the problem gets up top 499 befoe conections get lost , perhaps you indeed reach a treshhold of a parameter , maxuprc or something like that at that point .. I would suggest trying to find out also why theer are so much fin_wait_2 states becasue that is unusual at best
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07-23-2002 07:22 PM
07-23-2002 07:22 PM
Re: Printer connection down
Yes, I'm using HP-UX 10.20. Do you know the commands to add or modify the tcp settings?
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07-23-2002 07:33 PM
07-23-2002 07:33 PM
Re: Printer connection down
/usr/share/doc/start_up.txt
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07-23-2002 07:38 PM
07-23-2002 07:38 PM
Re: Printer connection down
# nettune -h
shows what you can change. Say if you want to list the current value for "tcp_receive" ..
# nettune tcp_receive
To see the allowable range ..
# nettune -l tcp_receive
To change ..
# nettune -s tcp_receive