Can I change Lan Interface Name from lan1 to lan0

[Deborah Grierson]

I have a problem with the lan card on a D-Class server.

It is the only lan card on the machine.

When I do a 'lanscan' I get a NetworkInterface Name Unit of lan1 (see attachment). This has not been a problem until I installed a licence which is tied into the Station Address of the unit, because the licence is looking for lan0.

A simple solution would be to change it from lan1 to lan0. Is this possible, and if so, how do I do it?

JJHH

[James R. Ferguson]

Hi John:

Edit your /etc/rc.config.d/ configuration file and specify the card you want as the *first* (element [0]).

In this case, if I recall, the file should be 'hpetherconf'.

Regards!

...JRF...

[Sukant Naik]

Hi,

Make the following changes to the /etc/rc.config.d/hpetherconf file.

HP_ETHER_INTERFACE_NAME[0]=lan1

Use the lanadmin command lanadmin -a and find the station address.
for eg:
sukant@nask3>> lanadmin -a 0
Station Address = 0x080009adacbd

Then change the following parameter to the station address in the /etc/rc.config.d/hpetherconf file

HP_ETHER_STATION_ADDRESS[0]=

This would do.

-Sukant

[John Bolene]

Yup, like James said.

It would appear that the interface has been configured more than once, hence the lan1 designation.

fix the /etc/rc.config.d/netconf file and the easiest way is to reboot to make it change

[Johan Gjestvang]

Hi, ain't nessesary easy this thing. I need to see a full ioscan list to check if you parhaps have a lancard with no driver attached to it.
It may be possible to change from lan1 to lan0 by doing
rmsf on /dev/lan1 and then
doing insf -e to recreate the lan0 device. However you have to run this commands from the console hench the lanconnectoion will be gone.
Then you have to reboot.
Do't forget to update the /etc/rc.config.d/netconf file.
From the output format of the lanscan, it looks like
you are running 10.20
Be very carefully! It's a risky operation.

[Deborah Grierson]

Nice try, guys, but as you can see (attachment) the hpetherconf file is already as you have suggested. .....And the machine has been rebooted several times in this state.

JJHH

[Ravi_8]

Hi,
Just changing the name from lan1 to lan0 doesn't work, or even by modifying the file as JRF says, since the lan card has a path on scsi and major/minor attached to it.

[sven verhaegen]

some more bad news , the lan naming itself is not only dependant on lancard but on the slot it is in and the order in which it has been introduced , meaning if you put a lancard in physical slot 1 it will get lan0 as driver , if you take the same card and put it for instance in slot 4 that will become lan1 , another card put in slot 1 wil be called lan0 , the driver name is bound to the slot not the card so it's much harder to get out of that situation

[James R. Ferguson]

Hi (again) John:

OK, you want to change the card's instance number. Do this:

Make a file, called '/tmp/laninit' and place the following line in it:

8/16/6 lan 0

Now, do:

# ioinit -f /tmp/laninit

Now reboot and verify the correct instance number with 'lanscan'. Then:

# cd /dev
# insf -e
# lssf /dev/lan* #...to verify device files...

Regards!

...JRF...

[Sanjay_6]

Hi John,

Try these procedures to change the instance no of the lan cards,

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=0a25dc6b1cf07dffc8/screen=ckiDisplayDocument?docId=200000058668743

Hope this helps.

Regds

[Deborah Grierson]

Hi James,

I was beginning to get VERY NERVOUS after reading some of the replies, but yours was more encouraging. I'll try it when I can get the users off the system.

May I ask you, in the tmp file, should there be a space between 'lan' and '0' ?

JJHH

[James R. Ferguson]

Hi John:

Yes, there *is* a blank (space) between "0" and "lan" in the line of the file I showed.

Regards!

...JRF...

[Deborah Grierson]

James,

I tried your solution, but when I entered 'ioinit -f /tmp/laninit' I got the response:

'ioinit: Instance number 0 already exists for class lan.'
Line 1. 8/16/6 lan 0

JJHH

[Deborah Grierson]

Sanjay,

Thanks for your reference, but I can't access it. I'm registered in the Europe Resource Centre and can't access the US Resource Center.

JJHH

[Sanjay_6 · Accepted solution]

Hi John,

To access the link posted by us, if the link has us-support and you are accessing the same from europe itrc, substitute europe-support in place of us-support and the link should open up on the europe itrc. By the way the TKB doc no is KBAN00000795

Hope this helps.

Regds

[James R. Ferguson]

Hi (again) John:

I presume then, that at one time there *was* a card at instance #0. Although the thread referenced below describes a case with a tape drive, the issue is the same, I believe. Follow the discussion starting with the thread referenced by Joseph in this thread, and continue with its denoument by Carsten Krege. If this fits, contact HP Support for the utility Carsten used.

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x60cacf38d6bdd5118ff10090279cd0f9,00.html

Regards!

...JRF...

[Deborah Grierson]

Thank you all for your enthusiastic and helpful input; there are so many threads to explore, but of necessity I must try one at a time.

James, you are the lucky one as I've had some success following the Carsten thread. The ioc program was attached to his reply, so I detached it and gave it a spin:

> ./ioc | grep -e Class -e lan

Class I H/W Path Driver
lan 0 8 8 1 0 btlan4
lan 1 8 16 6 lan2

The previously configured lan0 was there!

I created a file /tmp/laninit containing the lines:

8/8/1/0 lan 2
8/16/6 lan 0

and did:

> ioinit -f /tmp/laninit
> ./ioc | grep -e Class -e lan

Class I H/W Path Driver
lan 2 8 8 1 0 btlan4
lan 0 8 16 6 lan2

Then I did a similar procedure to change lan2 to lan1. - Just to practice my newly acquired skill!

So, now I need to reboot to verify the instance number change with lanscan, and to create the device files.

It looks as if things are going to work out. I'll let you know.

Once again, THANK YOU VERY MUCH !!!!!!!

JJHH

[Deborah Grierson]

James,

It worked like a dream! Thank you.

And thanks to everyone who contributed.

JJHH