topic problem with network in Operating System - HP-UX

problem with network

Gustavo Ledezma — Mon, 02 Jul 2001 17:36:14 GMT

I have just finished seting up a class n 9000 server. I was able to connect it to the network (local TCP-IP) however when telnet from a other machine within the network the connection is extremely slow. It also take a long time to prompt the login when telnet and ftp. There is no problem with the hardware or the network since the orher computers connected are fine.

Any ideas please help.

Re: problem with network

Peggy Fong — Mon, 02 Jul 2001 17:44:49 GMT

Sounds like host name resolution may be slow.
Have you tried telnet to the ip address from the other system - is this faster.

Do you have /etc/resolv.conf setup. Is your hostname in DNS?

Are you using a /etc/nsswitch.conf file to look up in DNS and /etc/hosts?

Check your lookup of host name by using "nslookup"

I'm sure there are other things to check, this is just a start....

Hope it helps.
Peggy

Re: problem with network

James R. Ferguson — Mon, 02 Jul 2001 17:47:26 GMT

Hi:

Try connecting by IPaddress and by hostname. Does the delay occur when using hostname and not IPaddress? If so, you are probabably looking at a DNS issue. Are you using DNS?

...JRF...

Re: problem with network

MANOJ SRIVASTAVA — Mon, 02 Jul 2001 18:39:33 GMT

Hi Gustavo

Check

1. /etc/resolv.conf .
2. If you are able to connect to the others from this server then there should be no problems vice versa except that name resolution should be correct " as seen by that server " So try a simple PING from that server to this one to see how is the connectivity . If you get satisfactory o/p then the problems lies with DNS name resolution.

MAnoj Srivastava

Re: problem with network

neylan tokerler — Tue, 03 Jul 2001 06:41:42 GMT

hi
1)name resolution - DNS hosts nis - already mentioned. nslookup!
2)you try telnet etc as root, don't you? does it differ for root and other users? if it does, i suspect nfs.
3)btw the client and server, check for switch conf, if exists, HD or FD issues cause very bad performance.

Re: problem with network

Magdi KAMAL — Tue, 03 Jul 2001 07:39:26 GMT

Hi,

Check your /etc/rc.config.d/netconf file and the default gateway address.

If you bild your n9000 using an ignite tape, there is a bug in the script.
Whatever you put like a default gateway address, the script is overwrite it an restauring the old one. Be sure it is not the old address.

Re: problem with network

Gustavo Ledezma — Thu, 12 Jul 2001 21:27:53 GMT

Thanks a lot!

The problem was on the nsswitch.conf. This machine is only connected to a TCP (internal) network so it was looking first for a dns server and not for the /etc/hosts file.