hostid on Solaris (x86, not SPARC)

How is the hostid of a Solaris 10 (and 11) x86 machine determined? What
could cause it to change? If one installs a second copy of Solaris on a
second disk in the same machine (so same ethernet address), would the
hostid change?

I know on SPARC it is the NVRAM so will only change on replacement of a
motherboard, but is this so on x86?

--
Dave K MCSE.

MCSE = Minefield Consultant and Solitaire Expert.

Please note my email address changes periodically to avoid spam.
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Dave (from the UK) wrote:[color=blue]
> How is the hostid of a Solaris 10 (and 11) x86 machine determined? What
> could cause it to change? If one installs a second copy of Solaris on a
> second disk in the same machine (so same ethernet address), would the
> hostid change?
>
> I know on SPARC it is the NVRAM so will only change on replacement of a
> motherboard, but is this so on x86?
>[/color]


[url]http://www.squirrel.com/squirrel/sun-nvram-hostid.faq.html#intel[/url]

"Dave (from the UK)" <see-my-signature@southminster-branch-line.org.uk> writes:
[color=blue]
>How is the hostid of a Solaris 10 (and 11) x86 machine determined? What
>could cause it to change? If one installs a second copy of Solaris on a
>second disk in the same machine (so same ethernet address), would the
>hostid change?[/color]

Some random process at install time.

Possibly. It's in the driver module "sysinit".

Casper

Casper H.S. Dik wrote:[color=blue]
> "Dave (from the UK)" <see-my-signature@southminster-branch-line.org.uk> writes:
>
>[color=green]
>>How is the hostid of a Solaris 10 (and 11) x86 machine determined? What
>>could cause it to change? If one installs a second copy of Solaris on a
>>second disk in the same machine (so same ethernet address), would the
>>hostid change?[/color]
>
>
> Some random process at install time.[/color]

Why the change from SPARC where it is difficult to change to x86 where
it is random? I realise there is nothing you can rely on being fixed on
x86, but most have ethernet and so have an ethernet address, which would
be reasonably fixed. I would think any newish motherboard would have
ethernet on.
[color=blue]
> Possibly. It's in the driver module "sysinit".
>
> Casper[/color]


--
Dave K MCSE.

MCSE = Minefield Consultant and Solitaire Expert.

Please note my email address changes periodically to avoid spam.
It is always of the form: month-year@domain. Hitting reply will work
for a couple of months only. Later set it manually.

"Dave (from the UK)" <see-my-signature@southminster-branch-line.org.uk> writes:
[color=blue]
>Why the change from SPARC where it is difficult to change to x86 where
>it is random? I realise there is nothing you can rely on being fixed on
>x86, but most have ethernet and so have an ethernet address, which would
>be reasonably fixed. I would think any newish motherboard would have
>ethernet on.[/color]

Quite; but not initially.

Casper
--
Expressed in this posting are my opinions. They are in no way related
to opinions held by my employer, Sun Microsystems.
Statements on Sun products included here are not gospel and may
be fiction rather than truth.