topic Re: VERY URGENT: Cannot connect to machine in Operating System - HP-UX

VERY URGENT: Cannot connect to machine

Nicky_5 — Wed, 20 Apr 2005 13:03:44 GMT

Hi,

I have an HP machine which was fine, all of a sudden i cant seem to connect to it remotely at all,
i am at the console i cant seem to figure out whats wrong. i cant ping to it either.

I rebooted the machine, but it seems to be stuch at the point where it is starting the NFS clientStart NIS+ server subsystem ...................................................... OK
Start NIS+ client subsystem ...................................................... OK
Start NIS server subsystem ....................................................... OK
Start NIS client subsystem ....................................................... OK
Start NFS client subsystem .......................................................

Please help.. i have no idea what to do..

Re: VERY URGENT: Cannot connect to machine

Rick Garland — Wed, 20 Apr 2005 13:11:28 GMT

You can't ping it?

Check your networking. Check the routing table. Is the default route in there? Check with network personnel to see if any changes.

Re: VERY URGENT: Cannot connect to machine

Rick Garland — Wed, 20 Apr 2005 13:12:18 GMT

Forgot to mention, check you LAN card(s). What does the ifconfig say?

Can you get a linkloop?

Re: VERY URGENT: Cannot connect to machine

Nicky_5 — Wed, 20 Apr 2005 13:22:17 GMT

hi all thanks for your response,

when i was logged onto the console i did ifconfig lan0 and it showed the correct settings the ip, gate way etc is correct and up.

Now since i thought i wold reboot the machine i am stuck at the point i mentioned before.

I did CTRL+C to get to the prompt.
please let me know what all i can do to cheack.. nothing has changed as far as i know and everyone i spoke to know..

Re: VERY URGENT: Cannot connect to machine

KapilRaj — Wed, 20 Apr 2005 13:25:14 GMT

Try a CTRL+ " Back slash" you should get a prompt !!

Else try the single user mode and then rectofy the error

Kaps

Re: VERY URGENT: Cannot connect to machine

Nicky_5 — Wed, 20 Apr 2005 13:31:09 GMT

Hi,

for some reasons i cannot use sam in the console window, it keeps saying display is incorrect.
Please let me know the commands for the checks as well, i am more of an AIX admin that HP.

Re: VERY URGENT: Cannot connect to machine

Nicky_5 — Wed, 20 Apr 2005 13:36:54 GMT

ifconfig output:

ifconfig lan0
lan0: flags=843
inet 12.20.194.12 netmask ffffff00 broadcast 12.20.194.255

Re: VERY URGENT: Cannot connect to machine

Zinky — Wed, 20 Apr 2005 13:38:01 GMT

You need to define your TERM setting (pretty basic). Alsom if your network is not up, you may have problems launching SAM..

It is very obvious your Network died -- bad LAN card? Disconnect? Down Network?

Re: VERY URGENT: Cannot connect to machine

Rick Garland — Wed, 20 Apr 2005 13:39:56 GMT

On your console, if it is a grenn screen issue the command "export TERM=hp"

A graphics term, maybe try xterm.

Either way you should get text version of SAM.

Once you get SAM, you can check more on the networking from there

Re: VERY URGENT: Cannot connect to machine

Nicky_5 — Wed, 20 Apr 2005 13:45:15 GMT

Hi,

How can i confirm if my lan card has gone bad?

Is there something like errpt on HP to check hardware errors or some command to run the diagnostics

Re: VERY URGENT: Cannot connect to machine

Rick Garland — Wed, 20 Apr 2005 14:13:40 GMT

You can verify the LAN cards are attached to the network via the 'linkloop' command.

Do a 'lanscan'. From the output you will get your MAC address(es).

Issue the command; # linkloop -v

The response should be OK.

Re: VERY URGENT: Cannot connect to machine

Dave Hutton — Wed, 20 Apr 2005 14:32:36 GMT

I had the same problem a few weekends ago rebooting a sever.

Does this server you are rebooting have another server that it NFS mounts a filesystem?

In our case we were rebooting two servers. This one came up first and hung here until that NFS file system became available.

Re: VERY URGENT: Cannot connect to machine

Nicky_5 — Wed, 20 Apr 2005 14:36:55 GMT

hi,

i do hve nfs mounts on this machine, but the nfs server is fine. and although i am not able to nfs mount the file systems, i am not even able to get to this machine remotely, i cant even ping to the gate way

Re: VERY URGENT: Cannot connect to machine

Nicky_5 — Wed, 20 Apr 2005 14:38:13 GMT

hi,

i did the lanman and linkloop commands as you suggested, and i got result OK.

Please advice.

Re: VERY URGENT: Cannot connect to machine

Nicky_5 — Wed, 20 Apr 2005 14:42:08 GMT

Hi All,

can you tell me what all network services need to be up for network connectivity. i saw one process on another HP machine called "nfsktcpd" which was not running on this one. can you tell me how i can start this service.

Re: VERY URGENT: Cannot connect to machine

Rick Garland — Wed, 20 Apr 2005 15:39:12 GMT

That process I believe is related to NFS.
In /sbin/init.d are files related to nfs (nfs.server, nfs.client, nfs.core) To start /sbin/init.d/nfs.core start, /sbin/init.d/nfs.server start, /sbin/init.d/nfs.client start

Re: VERY URGENT: Cannot connect to machine

RAC_1 — Wed, 20 Apr 2005 15:48:27 GMT

Logon to GSP. Has system booted into run level three?? Or stuck at startup scripts??
If stuck at NFS stuff, try doing following.

Press CTRL + SHIFT + | (pipe)
or Press SHIFT-DEL

Re: VERY URGENT: Cannot connect to machine

Nicky_5 — Wed, 20 Apr 2005 16:39:49 GMT

Hi All,

Thankyou for your response and time. I got this thing sorted out, it was a network related thing and i got my network admin to look, we both were struggling with this until now. Turned out that it was some problem with the switch configuration.

Thanks once again for all your help.

Re: VERY URGENT: Cannot connect to machine

Nicky_5 — Wed, 20 Apr 2005 16:40:18 GMT

as per previous post