The Question is:
Every time we make an ftp between two VAX of large files (> 100 Mb) we have
this error message which appears
550-Network READ failure.
550 connect to network object timed-out golden failed
We have no problem for the small files and the transfer takes place well. We
have no network problem and we can make a transfer of large files between 2
Please, could you please check may cause the problem.
$ tcpip sho version
Compaq TCP/IP Services for OpenVMS Alpha Version V5.1 - ECO 4
on a AlphaServer DS20 500 MHz running OpenVMS V7.2-1
File Transfer Protocol (FTP):
TCPIP$FTP_CHILD;1 V5.1-15E 24-AUG-2001
TCPIP$FTP_CLIENT;1 V5.1-15I 17-APR-2002
TCPIP$FTP_SERVER;1 V5.1-15E 24-AUG-2001 SYS$COMMON:[SYSEXE]
TCPIP$TFTP;1 V5.1-15A 27-APR-2001
The Answer is :
This could be a known interaction between TCP/IP V5.1 ECO 4 and a
unitary MTU setting that is occasionally found after upgrades from
older IP releases.
Intervening firewalls can also potentially be involved.
If tcp_mssdflt is set to 1, consider resetting it to the typical 536.
After having invoked the following:
Use the following to display the current tcp_mssdflt value:
sysconfig -q inet tcp_mssdflt
And -- if set otherwise -- use the following to reset the value:
sysconfig -r inet tcp_mssdflt=536
Please also seriously consider an upgrade to a more current TCP/IP
Services release, and then apply the associated ECO kit (if any).
Related topics include (8338).