topic Re: changing to full duplex requires reboot? in Operating System - HP-UX

changing to full duplex requires reboot?

James Ellis_1 — Tue, 12 Mar 2002 17:54:54 GMT

I am not sure if changing from half duplex to full duplex will require a reboot? I think rebooting is required to change the duplex mode. Thanks.

Re: changing to full duplex requires reboot?

Rita C Workman — Tue, 12 Mar 2002 18:00:16 GMT

I don't believe so.
You should be able to enter
lanadmin -X 100FD

The above w/change it to 100 full duplex. Use nmid or ppa depending on which platform your on.
To make permanent these changes, just make the entries in your /etc/rc.config.d/. See the following thread for some help on this:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xbc3eec08252fd611abd50090277a778c,00.html

Rgrds,
Rita

Re: changing to full duplex requires reboot?

Rita C Workman — Tue, 12 Mar 2002 18:02:46 GMT

Hi James,

Forgot to mention...make sure your auto-negotiation is OFF. And always make sure the port switch is set the same. I have gotten burned by switches that got reset to half duplex with auto on. - so whenever you see your network having trouble always make sure both ends are set the same.

Rgrds,
Rita

....all done now...

Re: changing to full duplex requires reboot?

Uday_S_Ankolekar — Tue, 12 Mar 2002 18:23:15 GMT

NO..

But kame sure you have changed the settings in proper files so it could take effect during next reboot.

look for file in /etc/rc.config.d/hp*

lanadmin -X speed nmid to change it on the fly

ex lanadmin -X 100FD 2

-USA..

Re: changing to full duplex requires reboot?

nancy rippey — Tue, 12 Mar 2002 18:51:03 GMT

No a reboot is not required. I actually changed to full duplex on a production server this morning - no problems.

Re: changing to full duplex requires reboot?

Sandip Ghosh — Tue, 12 Mar 2002 19:09:05 GMT

No, it does not need any reboot. For temporary you have to do through lanadmin and to do it permanently you have to edit the correspoding file to your network card under /etc/rc.config.d directory like hpbase100conf etc.

Sandip

Re: changing to full duplex requires reboot?

Darrell Allen — Tue, 12 Mar 2002 19:32:31 GMT

Hi James,

Usually you'll be fine to use lanadmin -X "on the fly". However, I have had lanadmin hang before when the switch port was still configured to autoneg.

I've never had a problem changing from 100HD to 100FD on the server if the switch was already forced to 100FD (not autoneg).

Darrell

Re: changing to full duplex requires reboot?

Roger Baptiste — Tue, 12 Mar 2002 19:43:02 GMT

Hi,

I have done this many times, never needed a reboot. Can be done on the fly. Make sure you get the settings right and also note that there will be a small moment (couple of minutes), when the network connection on the port will freeze while the change is on.
That's why if you have another lan port on the system, you can login through that port and issue the command. Not a big deal, but helps.

HTH
raj

Re: changing to full duplex requires reboot?

Sanjay_6 — Tue, 12 Mar 2002 19:49:27 GMT

Hi James,

You can do the change through SAM and the change will be recorded in the configuration file and sam will restart the network. So you don't need a reboot. If you use lanadmin to make the change, you'll have to edit the corresponding configuration file manually. If you don't do so, the change will be lost on a reboot. Lanadmin changes are temporary and are lost on reboot.

So i would suggest, you try to make the change using SAM, this will modify the required configuration file and you won't have to edit anything manually.

Hope this helps.

Regds

Re: changing to full duplex requires reboot?

James Ellis_1 — Wed, 13 Mar 2002 03:08:40 GMT

I changed to full duplex and it seem to be working. I did it through SAM. I noticed that SAM automatically updated /etc/rc.config.d/hpbase100conf.

One other thing, I am using an ethernet card, and I noticed in /etc/rc.config.d there was a file called hpetherconf. Do I need to update this also? I don't think so.

Thanks.

Re: changing to full duplex requires reboot?

Michael Tully — Wed, 13 Mar 2002 03:37:12 GMT

Hi,

No. The only file that needs updating in this
instance is the /etc/rc.config.d/hpbase100conf
file.

-Michael