topic Re: Soft for solving network problems in Operating System - HP-UX

Soft for solving network problems

Alekseev Roman — Wed, 30 Jan 2002 14:19:28 GMT

Hello.

I have 10 A400 HP servers in a 100mb full-duplex private LAN. From time to time there are some troubles such as NFS timeout or low bandwith within this LAN.Is there any soft for HP-UX 11.00, which i can use to diagnose and resolve my problems?

I have a GlancePLus pack,but i have no idea of using it in such way.
Thanx.

Re: Soft for solving network problems

Marcel Eken_2 — Wed, 30 Jan 2002 14:34:24 GMT

Hi Alekseev,

You can try to use the network trace tool that comes with the hp-ux software.

To enable:

nettl -start

Start tracing:

nettl -tn pduin pduout -e all -f //

Stop tracing:
nettl -tf -e all

Read the trace with:

netfmt -s -f /dir/out-file>

There are lots of options to use with netfmt, check the man page for details.

Kind reagrds,

Marcel Eken.

Re: Soft for solving network problems

Ron Kinner — Wed, 30 Jan 2002 14:37:52 GMT

To help you get a good idea of your traffic on the LAN you can use MRTG.

http://people.ee.ethz.ch/~oetiker/webtools/mrtg/

It uses SNMP to monitor the traffic on each interface in your LAN (including the hub/switch if it supports SNMP) and draws a really nice graph of usage during the day. Will help you determine who the heavy hitters are. It's not limited to just traffic. Can also monitor errors and drops.
Price is right. It's free.

Ron

Re: Soft for solving network problems

Bill Hassell — Wed, 30 Jan 2002 18:41:16 GMT

Use nfsstat. However, if the NFS mounts are complex, especially across wide area networks, you'll need to spend a lot of time working on both the reliability of the network as well as possible mountpoint timing options to allow for unexpected delays. NFS is not a good protocol for problem networks.

Re: Soft for solving network problems

Sanjay_6 — Wed, 30 Jan 2002 22:02:44 GMT

Hi,

Try the hp-ux tuning guide,

http://docs.hp.com/hpux/onlinedocs/os/11.0/tuningwp.html

Here is the section on network,

http://docs.hp.com/hpux/onlinedocs/os/11.0/tuningwp.html#networks

hope this helps.

Regds

Re: Soft for solving network problems

Pavel Hampl — Thu, 31 Jan 2002 10:46:55 GMT

Hi,

useful for the network analyze are tcpdump and tcptrace. You can download them from for example from : http://hpux.connect.org.uk/ .

Simple example :
tcpdump -w /tmp/log
tcptrace -l /tmp/log

By

e are tcpdump and tcptrace. You can download them from for example from : http://hpux.connect.org.uk/ .

Simple example :
tcpdump -w /tmp/log
tcptrace -l /tmp/log

By