topic Re: Identical mac address ???? in Operating System - HP-UX

Identical mac address ????

OLIVA_1 — Tue, 29 Mar 2005 09:52:16 GMT

Hello,

I have cloned a server with DD command on system disk (I haven't got tape drive to use ignite). All work properly except network card. I have the same mac address on both servers ???

Someone can help me ?
How can I "update" the mac address on the second server ? Where lanscan command get this information, in kernel ?

# lanscan
Hardware Station Crd Hardware Net-Interface NM MAC HP DLPI Mjr
Path Address In# State NameUnit State ID Type Support Num
8/16/6 0x080009B859CA 0 UP lan0 UP 4 ETHER Yes 52

I have exactly the same result on both server...

Thanks,

Re: Identical mac address ????

RAC_1 — Tue, 29 Mar 2005 09:58:07 GMT

Check the config file this an uses.

ioscan -fnClan and then appropriate config file - such as /etc/rc.config.d/hpbtlan

Check for HP_BTLAN_STATION_ADDRESS[0]=
It should be blank.

Anil

Re: Identical mac address ????

Steven E. Protter — Tue, 29 Mar 2005 09:59:11 GMT

That really isn't supposed to happen with Ignite. There is a procedure for changing the mac address on a Lan card.

http://www1.itrc.hp.com/service/james/dispDoc.do?docURL=http%3A%2F%2Fsearch.hp.com%2Fredirect.html%3Furl%3Dhttp%253A%2F%2Fforums1.itrc.hp.com%2Fservice%2Fforums%2Fquestionanswer.do%253FthreadId%253D222343%26qt%3D%252Bchange%2B%252Bmac%2B%2B%252Baddress%2B%252Blan%2B%252Bcard%26hit%3D5&aid=SEARCH_FORUMS&pil=5&serStr=change+mac+address+lan+card&pir=5

http://www1.itrc.hp.com/service/james/dispDoc.do?docURL=%2Fservice%2Fcki%2FdocDisplay.do%3FdocLocale%3Den_US%26docId%3D200000068881849&aid=SEARCH_CKI&pil=22&serStr=change+mac+address+lan+card

SEP

Re: Identical mac address ????

Pete Randall — Tue, 29 Mar 2005 09:59:21 GMT

Someone probably coded the MAC address into the interface config file. Check your /etc/rc.config.d/*conf file that corresponds to your NIC's driver:

btlan hpbtlanconf
btlan0 hpeisabtconf
btlan1 hpbasetconf
btlan3 hpbase100conf
btlan4 hpgsc100conf
btlan5 hppci100conf
btlan6 hpsppci100conf

I would recommend never coding the MAC address - just let the system read the hard-coded unique address from the card.

Pete

Re: Identical mac address ????

rick jones — Wed, 30 Mar 2005 12:37:04 GMT

Now you know why Ignite/UX should be used to clone systems :) It does not require a tape drive. You would install the (free) Ignite software on the first system, generate a golden system image, and use that to install the second through Nth systems via the network.

In that way, you will not have issues when someone has set a specific MAC address in the aforementioned config files.

Unless there is some licensing issue with replaced LAN interface hardware, there should be little to no reason to configure a MAC address in the config files in the first place.