LAN card problem.

[Venky_1]

Hi,

I am having intermittent problem with the LAN card ( HP PCI 10/100 BaseTX-core)on rp5430 ( HP-UX 11i ).

Server has all the latest patch bundles. LAN card responds to ping but fails when rlogin & telnet is used.

Any suggestions.

Thanks
Venky.

[Robert-Jan Goossens]

Hi Venky,

Do you get an error message ?

Robert-Jan.

[Steven E. Protter]

Could be duplex issues.

lanadmin -x 0

Is it what you expect, 100 BaseT Full Duplex?

Even if it is, have your switch admin go with 100 BaseT Full Duplex explicit, as in manual.

You might need to make entries into /etc/rc.config.d/hpbtlanconf to force the configuration to cme out the way you want.

/etc/services should be looked at.

You aren't running any firewalls?

look at /etc/inetd.conf and see if telnetd daemon is enabled or commented out.

If commented, uncomment it, save the file

inetd -c

SEP

[Sridhar Bhaskarla]

Hi Venky,

What did you mean by "fails when rlogin & telnet is used".

Does it take a long time to spawn the prompt?. If so, then it could be either the "duplex" problem as stated by Steven or "name server resolution" issue.

Since it is intermittent, I would guess there may be issues with the name server configured in the resolv.conf.

Make sure there are no duplicate IP/MAC addresses on the network.

-Sri

[Jeff Schussele]

Hi Venky,

Also verify that a security setting is not preventing connections:

OS => /etc/inetd.conf & /var/adm/inetd.sec

3rd Party => tcp_wrappers (/etc/hosts.allow & /etc/hosts.deny)

Rgds,
Jeff

[Venky_1]

Hi ,

I forgot to mention that after
every reboot of the server, I am able to do rlogin & telnet but after 30-40 minutes, it stops responding to rlogin/telnet but it responds to ping.

As it is responding to pings the card seems to be fine at the physical layer.

Thanks
Venky

[Patrick Wallek]

When it stops responding to rlogin and telnet, is inetd still running? 'ps -ef | grep inetd'

If it's not, then that's your problem. Do an '/sbin/init.d/inetd start'

[Sridhar Bhaskarla]

Hi Venky,

It could be due to various reasons. Have a window opened and observe the load on the server. Look at the syslog.log to see if you have any further errors.

What error message do you get when you try to "telnet"?. Does it say "connection refused" or does it hang forever?.

-Sri

[Robert-Jan Goossens]

Hi Venky,

just a wildshot. How many users are connected to the server when you can not login anymore ?

Take a look at this document.

document description:INCREASING PTY
document id:KBRC00000945

Europe
http://www5.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000063199801

US + Asia
http://www2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000063199801

Kind regards,

Robert-Jan.

[Massimo Bianchi]

Hi,
are you able to login using the console ?


If so, are there any strage message in the syslog ?

May be you are encontering some kernel limit.

Also check your HPUX license: is it for unlimited users ?

Next check: is using top, have you any high consuming CPU ?

If you issue the command "uptime", how is the run-queue ?

Are there any "Stale NFS handles" ?


HTH,
Massimo