ftp from windows to hp-ux hangs

[Mauricio Aquino]

I am ftping from windows XP Pro to a HP-UX 10.x to get some files (small files 40-400 KB) using a Perl script. This script runs every minute. Occasionally it hangs. Normally get the files quickly, but sometimes hangs. Attached is the script, only the first section (bajar_base()) is the one that is getting files from HP-UX.

I appreciate any assistance?

Thanks.
Mauricio

[Steven E. Protter]

open a telnet/ssh session on the 10.x box and/or start a continuous ping to the box.

In the telnet session, as root, tail -f /var/adm/syslog/syslog.log

The hang could be caused by a networking problem, or system stress on the NIC card or an intermittant hardware problem. You may want to run top/glance and see if the box has bottlenecks.

A problem outside the hp box, say on the network infrastructure will not show up in the diagnostics, though ping times may increase.

If ping hangs at the same time as the ftp job, then its a network issue. I'd check switch port settings, cables and such and make sure everything is solid.

SEP

[Gerhard Roets]

Hi Maurico

Does your HP-UX box use DNS? If so you might experiance what appears to be hangs when the dns server is down.

Does the windows box use DNS ... could be another reason but i do not think so. Since the HPUX box seems to hang according to ya.

Regrds
Gerhard

[Chris Watson]

I had a lot of problems with HP's ftp server stability under 10.20 and 11.0 until patched both the ftp server and NETWORKING. I had suffered lots of mysterious stutters and connections failures.

How are you on the patch front?

[Ted Buis]

Are your running Windows 95? You are running HP-UX 10.x which is from the same timeframe. Time to move to a newer release like 11.11.

[Mauricio Aquino]

Thanks to all for your prompt response.

1.syslog.log does not show any wrong.
2.ping is keeps running at the hang time.
3.I am not using DNS, i making ftp direct to ip address.
4.I am using XP Pro.
5. In the patch front i am bad for sure, how do i check ftp server version and networking? Where can i get those patches?

Thanks

[Ted Buis]

www.itrc.hp.com and drill down or more specifically at:
http://www2.itrc.hp.com/service/patch/search.do?BC=patch.breadcrumb.main|&pageContextName=hpux:::

[Gerhard Roets]

Maurico

I mean does the unix machine use DNS. Because if dns is down login times is long and your perl script could see it as a timeout. Even if you are connecting by IP. When you connect to the unix machine it does a reverse lookup on your ip ... to get your dns entry ... if dns is down this times out.


Regards
Gerhard

[Mauricio Aquino]

Ted,

I am a little confuse, i went to the patch search section, you gave me. On step 1, select hardware an OS, there is only 700 or 800 for hardware, the box i have is HP-9000 D320. Is this the right place? or what is s700_800.

thanks.
Mauricio.

[Ted Buis]

All HP Servers are 800 Series, and the pa-risc HP workstations are 700 Series. This goes way back to old model numbers, that haven't been used in years.