topic Re: Networking issue in Operating System - HP-UX

Networking issue

David Dangerfield_1 — Fri, 09 May 2008 12:33:52 GMT

I have a New rx6600 servers with HP UX 11i V3 on it. I have all the correct IP, Gateway etc... but I still can only get to anything on the same subnet. If i try to ping lets say www.hp.com I get nothing. I have a server sitting right beside it that I can get to anything I need to. Is there something in release 3 that I am missing or could look at.

THANKS

Re: Networking issue

Yogeeraj_1 — Fri, 09 May 2008 12:47:52 GMT

hi,

You need to verify the following as well:
- able to ping the gateway?
- Interface: is it up?
- Firewall in between?

revert!
kind regards
yogeeraj

Re: Networking issue

David Dangerfield_1 — Fri, 09 May 2008 12:49:48 GMT

Yeah can ping the router and firewall. We have everything open on the firewall for the ip as we do the old server's ip and still can't. just thought maybe something on the server I could check also.

Re: Networking issue

TTr — Fri, 09 May 2008 12:52:59 GMT

Can you ping an IP address on the other side of the gateway?

The failure of "ping www.hp.com" may be a name resolution issue.

We need more details here.

Re: Networking issue

David Dangerfield_1 — Fri, 09 May 2008 12:58:33 GMT

That is the problem I can't anything outside the router.

Re: Networking issue

Yogeeraj_1 — Fri, 09 May 2008 13:05:03 GMT

>That is the problem I can't anything outside the router.

Is there anything specific abput the router? Can you access www.hp.com from another host in the same network?

revert!

kind regards
yogeeraj

Re: Networking issue

David Dangerfield_1 — Fri, 09 May 2008 13:07:36 GMT

yes I can get to www.hp.com from another server sitting right beside it using the same 10.14.xx.xx type IP addresses. But this server I can't ping anything unless it is in the 10.14.xx.xx

Re: Networking issue

ECUse — Fri, 09 May 2008 17:01:24 GMT

A couple of thinks you can check. DNS and routing. Can you get a resolution of www.hp.com from both systems?

Should look like this:

$ nslookup www.hp.com
Name Server: echqw2ks01.elections.ca
Address: 126.1.11.7

Trying DNS
Non-authoritative answer:
Name: www.hpgtm.nsatc.net
Addresses: 15.201.49.22, 15.200.30.23
Aliases: www.hp.com

For the routing. Compare the output of the netstat -rn command with your two systems. There should be a "default" entry for both with your gateway.

Re: Networking issue

Steven Schweda — Fri, 09 May 2008 17:03:16 GMT

Have you compared the output from:

netstat -r

between the two systems? The easiest problem
would be the lack of a (useful) default route
on the new one.

Re: Networking issue

David Dangerfield_1 — Fri, 09 May 2008 17:09:42 GMT

See attached on the netstat -rn.

Also nslookup on the new server I get No address information.

Re: Networking issue

ECUse — Fri, 09 May 2008 17:15:03 GMT

Looks like either your /etc/resolv.conf file on your new system doesn't have any information. Or your /etc/nsswitch.conf file doesn't have a DNS entry for hosts lookup. In /etc/nsswitch.conf you should have something like this:

hosts: dns [NOTFOUND=continue RETURN=continue UNAVAILABLE=continue] files

Just compare those 2 files on both systems.

Re: Networking issue

David Dangerfield_1 — Fri, 09 May 2008 18:09:22 GMT

I had put the dns in through sam but for some reason it wasn't in there. So once i put the DNS addresses it worked. THAT was what I needed.

THANKS

Re: Networking issue

David Dangerfield_1 — Fri, 09 May 2008 18:10:36 GMT

Problem solved THANKS for all your help.