hi expert,

hi all very need help please advice, i have v890 production server (gateway server) which running on telecommunication application (e.g USSD application) on this few month i have a problem with the connection to application server, for 2 - 3 hours the connection always down and cannot reconnect to the application server again. info that the connection listen at port 5000, below i had capture from netstat command :

10.1.1.8.5000 10.2.2.6.41229 49640 0 65700 0 CLOSE_WAIT
FIN_WAIT_2
10.1.1.8.5000 10.1.8.1.35990 49640 0 65700 0 FIN_WAIT_2
10.1.1.8.5000 10.2.2.6.54152 5840 0 66608 0 TIME_WAIT
10.1.1.8.5000 10.1.8.1.35995 49640 0 65700 0 FIN_WAIT_2

note :too many CLOSE_WAIT,FIN_WAIT and TIME_WAIT if the connection down.

i had try to configure this :

mapadm@USSDGsem-1:etc/rc2.d% /usr/sbin/ndd -get /dev/tcp tcp_xmit_hiwat
65535
mapadm@USSDGsem-1:etc/rc2.d% /usr/sbin/ndd -get /dev/tcp tcp_recv_hiwat
65535
mapadm@USSDGsem-1:etc/rc2.d% /usr/sbin/ndd -get /dev/tcp tcp_cwnd_max
65534
mapadm@USSDGsem-1:etc/rc2.d% /usr/sbin/ndd -get /dev/tcp tcp_time_wait_interval
5000
mapadm@USSDGsem-1:etc/rc2.d% /usr/sbin/ndd -get /dev/tcp tcp_ip_abort_interval
30000
mapadm@USSDGsem-1:etc/rc2.d% /usr/sbin/ndd -get /dev/tcp tcp_fin_wait_2_flush_interval
10000

but still get too much CLOSE_WAIT,FIN_WAIT and TIME_WAIT.


please any advice ??


Thank you for your attention


Best Regards,

wu