topic Re: G-Ethernet in Operating System - HP-UX

G-Ethernet

hpuxrox — Mon, 22 Apr 2002 18:15:13 GMT

I am having an issue with slow uploads from on of my servers. trafic "to" the box works fine but "from" is terrible. I have seen issues with 100Base FD and such, setting Auto-neg to off blaa, blaaa...

Re: G-Ethernet

Santosh Nair_1 — Mon, 22 Apr 2002 18:20:42 GMT

Most of the issues that I've seen in terms of poor performance with ethernet cards have either dealt this faulty hardware or incompatible settings. Generally speaking auto-negotiation and auto-detect don't work too well. Its much better to hardcode the speed and duplex of the connection at both the card and the switch, e.g. set both end to 100FD. You can check the setting on the card by using the command:

lanadmin -x {PPA}

(You can get the PPA by looking at the output from lanscan). Hope this helps.

-Santosh

Re: G-Ethernet

Uday_S_Ankolekar — Mon, 22 Apr 2002 18:36:43 GMT

Hi,

Try lanadmin -X 100FD Card instance Number

(lanscan will give card instance number.)

Also check the speed at switch level.

lanadmin -X is temperory settings. Change in /etc/rc.config.d/hpbase100conf for permanent change

-Goodluck
-USA..

Re: G-Ethernet

MANOJ SRIVASTAVA — Mon, 22 Apr 2002 18:48:49 GMT

Hi Yates

The post starts with G so I thought it was a fibre , for the copper or the 100 mbps port you have to do the following :

1. Identify the LAN Interface using the lanscan command to know the interface.
2. Check for the speed set already using the lanadmin -x < ppa or the lan > command.
3. Use the command lanadmin ???X 100fd nmid or the ppa to change it to the desired one.
4. Check the setting using the lanadmin command again.
5. To change it permanently go to /sbin/rc.config.d.hpbase100conf .

and you are good to go.

Manoj Srivastava

Re: G-Ethernet

hpuxrox — Mon, 22 Apr 2002 18:51:13 GMT

it is fibre. Everyone answered what I already knew about coper.

Re: G-Ethernet

MANOJ SRIVASTAVA — Mon, 22 Apr 2002 19:02:44 GMT

Hi Yates

Try doing a lanadmin to looka t the errors , if you obeserve lots of collisions then may be you have look at the interface , cable or the port where the fibre is plugged into as such I have not come across such issues with fibre .

All the best.

Manoj srivastava

Re: G-Ethernet

Helen French — Mon, 22 Apr 2002 19:04:50 GMT

Hi,

This document may help you (TKB #BHERRKBRC00006817):

http://us-support.external.hp.com/cki/bin/doc.pl/sid=124bcd9c01a1f22ea1/screen=ckiDisplayDocument?docId=500000000092174

HTH,
Shiju

Re: G-Ethernet

Uday_S_Ankolekar — Mon, 22 Apr 2002 19:07:14 GMT

Hi,

What speed you see when you run fcmsutil..?

/opt/fcms/bin/fcmsutil /dev/devname

would give you the link speed ..

run ioscan -fnC fc to get device name

-Goodluck
-USA..