telnet problems

[Blessing Sagonda]

Hie guys we have an HP-UX K-class , which we are using to host ower database.
All of the user use telnet to connect to the machine, the prolem is that it
takes a long time for me to get a login prompt from the machine .
I get this error message in the syslog.

Apr 13 16:56:36 okzim telnetd[25199]: getpid : peer died: No route to host
Apr 13 16:57:00 okzim telnetd[25536]: ttloop: peer died: Connection refused

This does not happen frequantly , it can go for weeks without happening then
all of a sudden it starts having problems.

What is the problem and how can i fix it.

thanks.

[Terja Lange_1]

Couple of things to look at

a) netstat -a - gives you network statistics,
what do they look like. are you having collisions, or is the error rate high.

b) setup some arbitrary pings. From the server outwarnds. collect the results
in a simple shell script from cron every 5 minutes or so and collect a profile.
do the ping statistics vary often. Do the same to the netstat . ofcourse run it
thru grep just to collect the information you require.
c) If your collision rate is high or error rate is high. swap the cable. can be
as simple as a loose connection which, as the machines disks spin vibrates
slightly and can cause it.
d) do you run dhcp on the network. are there any naughty nt people setting up
dhcp servers thus getting ip address conflicts or temporary pc's or laptops
which may have your machines ip address, that would cause the connection time
outs. If you are friendly with your network guys, get them to look at the
router arp caches, to see if your machines mac address matches the ip address
(use lanscan to obtain your machines mac address).

Hope this helps.