topic Re: Rename Interface in Operating System - HP-UX

Rename Interface

Uday_S_Ankolekar — Tue, 28 Mar 2006 14:49:28 GMT

How do I rename a lan interface?
Currently I lan0, lan3,lan5 and lan6 I want lan0 through lan4

Thanks

Modi

Re: Rename Interface

Patrick Wallek — Tue, 28 Mar 2006 14:53:51 GMT

Why?

It doesn't really matter what the names are.

Re: Rename Interface

Steven E. Protter — Tue, 28 Mar 2006 14:54:20 GMT

Shalom Modi,

This would require you to renumber your hardware instances.

Its difficult and not without risk.

Here is how:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=726164

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=722697

This is not something I'd do for fun. I had to do it once to force a tape drive to /dev/rmt0 and it was no fun at all.

SEP

Re: Rename Interface

Uday_S_Ankolekar — Tue, 28 Mar 2006 15:01:34 GMT

Patrick,
It's for documentation purpose. we want to have uniform across all the servers.
It's not a must, but if you have any way to do it then let me know

Steven,

The link you provided does not explain anything!

Re: Rename Interface

Rick Garland — Tue, 28 Mar 2006 15:02:55 GMT

There is a tool that can be provided by the ITRC support.

Check Knowledge Base
Doc ID UTRANKBRC00017098
Doc ID KBRC00013394

Both relate to changing the instance numbers.

As stated, this is unsupported! There are risks involved!

Weigh the risks vs the benefits.

Re: Rename Interface

HGN — Tue, 28 Mar 2006 15:13:29 GMT

Hi

I think I would leave it like that since there are risks as mentioned by others here.

Rgds

HGN

Re: Rename Interface

Uday_S_Ankolekar — Tue, 28 Mar 2006 15:14:09 GMT

Rick,

I don't those doc_id in Knowledgebase. Cany cut/Paste?

How can I obtain that tool?

-Modi

Re: Rename Interface

Rick Garland — Tue, 28 Mar 2006 15:20:26 GMT

The forum moderators will remove the Docs from the posting. You will have to retrieve from the KB. If you have HP support, call them and have HP deliver to you.

The tool name is 'ioconfig_dump'.

I highly suggest to get these documents somehow and review them.

Again, this is an unsupported utility. HP will say "Good Luck"

Re: Rename Interface

Rick Garland — Tue, 28 Mar 2006 15:23:53 GMT

I just searched the Knowledge Base for Doc ID UTRANKBRC00017098 and it is there.

This is the document that deals specifically with changing LAN names

Re: Rename Interface

A. Clay Stephenson — Tue, 28 Mar 2006 15:30:09 GMT

I. cd /
ioscan -f | grep -e "DEVICE" -e "INTERFACE" | grep -v "target" | awk '{printf("%-20.20s %-12.12s %3d\n",$3,$1,($2 + 0))}' > devlist # all of this is one line

This creates a file listing HW Path, Class, and Instance Numbers for the devices. It's the Instance Numbers that you want to change.

II. Vi devlist and assign instance numbers 0, 1,2, ... to lan0, lan1, lan2, ... respectively. Leave the disk assignments as they are. Save the file.

III. Now blow away the ioconfig file and reboot:
cd /stand
mv ioconfig ioconfig.old
cd /etc
mv ioconfig ioconfig.old
shutdown -r 0

IV) The system bootup will stop at ioinitrc message:
/sbin/ioinit -c # this will recreate the missing ioconfig files
/sbin/ioinit -f /devlist -r # this will read in your edited file and reboot. You may see error messages like "Input is identical". Pay no attention.

After the box has rebooted, do a lanscan and make sure your assignments are as you expected.