topic Re: Lan Scan MAC Address 0x555555555555 in Operating System - HP-UX

Lan Scan MAC Address 0x555555555555

Jason Baldwin — Mon, 22 Jul 2002 12:39:56 GMT

What's wrong with my Lan Card? The MAC address comes up as 0x555555555555 when doing a lanscan or lanadmin display.

This card is used as a service guard standby lan card, does this meant that the MAC address also floats?

Baseline is K570, HPUX 11.0

Re: Lan Scan MAC Address 0x555555555555

melvyn burnard — Mon, 22 Jul 2002 12:50:22 GMT

That does not look right at all, and no, SG does not switch the MAC address.
I would suggest you check the /etc/rc.config.d/hp* files to see if this is being set anywhere, or see if someone is issuing a manual change for this.
You could also run cmviewconf and see what hte SG binary knows this MAC address to be.

Re: Lan Scan MAC Address 0x555555555555

Stefan Farrelly — Mon, 22 Jul 2002 12:51:55 GMT

None of our SG nodes have such strange mac addresses. Normally all HP ones start with 080009xxxxxx. Lanscan on all our SG nodes reports normal unique mac addresses for each - including standby's.

I suspect someone has set your Mac address to this value (it is unique so probably works fine!). You can reset it to something more normal in /etc/rc.config.d/hpbase100conf or hpetherconf (or for fibre hpfddiconf)

Re: Lan Scan MAC Address 0x555555555555

James R. Ferguson — Mon, 22 Jul 2002 12:58:11 GMT

Hi Jason:

If you find it set in of the (appropriate) network configuration files, as for example, '/etc/rc.config.d/hpbasetconf', then unset the variable. It does not need to be explicitly declared.

Do an 'ioscan -kfnC lan' to determine the kind of LAN card and therefore the configuration file to examine and/or edit:

http://techsolutions.hp.com/fe/configs.html#config_files

Regards!

...JRF...

Re: Lan Scan MAC Address 0x555555555555

melvyn burnard — Mon, 22 Jul 2002 12:59:57 GMT

Stefan is almost right ;-}
HP now has at least 4 MAC address ranges:
0x080009
0x00306E
0x001083
0x0060B0

And also, if someone has set that MAC address, and it is NOT the same as in the binary, SG may have issues with trying to switch to it.

So check the binary using cmviewconf, or run cmscancl and read through the output file.

Re: Lan Scan MAC Address 0x555555555555

Jason Baldwin — Mon, 22 Jul 2002 13:02:48 GMT

Thanks for the swift replies chaps.

There is nothing in the /etc/rc.config.d/hp* files of any note for any of the cards in the system. I thought the MAC addresses are hard coded into the card?

I cannot apply a SG cluster as it complains about lan4 and lan5 not being able to see itself, this would normally lead me to check the cabling but his has not changed for years!

I think the card may have gone awol whilst the cluster has been up and during our recent work this problem has now become apparent. (HPUX 11 upgrade --> Re-apply cluster)

Re: Lan Scan MAC Address 0x555555555555

melvyn burnard — Mon, 22 Jul 2002 13:05:37 GMT

Yes the card could actually be the cause of the error. You may want to get it checked out and replaced.