topic Force lan to 100FULL in Operating System - HP-UX

Force lan to 100FULL

uadm26 — Wed, 27 Jul 2005 10:15:23 GMT

Hi,
I'ld like to know how can i force an ethernet lan 10/100 only to 100, like people say (100full), in a SO hp-ux 11.11. On GSP I have 3 choices ( 10, auto, 100). But I can't find that configuration on my SO. I think lanadmin don't resolve my question.

Re: Force lan to 100FULL

Kent Ostby — Wed, 27 Jul 2005 10:19:16 GMT

Joel -- Take a look at this message string:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=183037

Re: Force lan to 100FULL

Alan Meyer_4 — Wed, 27 Jul 2005 10:22:34 GMT

I always turn off auto_negotiation and set speed to 100 and full duplex within SAM.

Re: Force lan to 100FULL

DCE — Wed, 27 Jul 2005 10:26:00 GMT

I agree with Alan - SAM is the quickest and easiest way to set it.

Re: Force lan to 100FULL

Mel Burslan — Wed, 27 Jul 2005 10:31:29 GMT

Are you talking about the GSP ethernet port speed or the system network interfaces speed ? The two are different things.

for system NICs procedure is quite simple
1. Make sure Switch port the NIC is connected to is set to 100FD
2. run
ioscan -fnC lan
and determine your driver type for the interface. (let's say you found them to be btlan)
3. edit /etc/rc.config.d/hpbtlanconf
find or create a block referring to this NIC instance as follows

HP_BTLAN_INTERFACE_NAME[0]=lan0
HP_BTLAN_STATION_ADDRESS[0]=
HP_BTLAN_SPEED[0]=100FD

making sure index in square brackets is unique for each interface throughout this file. Save the file
4. run commands:

/sbin/init.d/hpbtlan stop
/sbin/init.d/hpbtlan start

5. verify the speed by running

lanadmin -x PPA_No

where PPA_No is 0 for lan0, 1 for lan1 and so on.

if you are talking about the speed of the GSP interface, I am not sure if you have any control over that one. As I hardly ever use it, and the stuff you do over GSP is so low volume, 10 Mbit is more than anyone can ever need on that thing in my opinion.

Re: Force lan to 100FULL

uadm26 — Wed, 27 Jul 2005 10:53:52 GMT

thanks, i've try sam and the file configuration, that's all.

Re: Force lan to 100FULL

Mel Burslan — Wed, 27 Jul 2005 12:09:56 GMT

One thing you need to be careful when you use sam for these changes: sam puts the station address into the middle line, as in the mac address of your interface. Should you happen to change the interface in the future due to a failure or something, you either need to do this sequence, using sam again, or after finishing the sam session, you go in and delete the station address (set it to nothing) and restart the drivers as described in my previous posting, in order not to pull hair 2 years down the road, figuring out why the inteface keep losing its 100 FD setting or not able to hold it. I am sure either you will not be around or forgot this little speed setting incidence by that time.
Just a word of caution.