Re: ARP interfering with Etherboot TFTP?

On Wed, 2006-03-08 at 13:58 +0100, Geert Stappers wrote:
> On Wed, Mar 08, 2006 at 12:36:02PM +0000, John Connett/ENG/UK/Plasmon wrote:
> > I think I may have found something curious!  Consider the ethereal
> > output below.  In particular, the ARP responses.
> > 
> >     First Response:  MAC Address 00:30:05:93:54:c5
> >                                           ^^
> >     Second Response: MAC Address 00:30:05:83:54:c5
> >                                           ^^
> 
> Wired
> 
> > 17234 15.238 skylon.devel.pcs 10.4.2.46        ARP  Who has 10.4.2.46?  Tell 10.4.2.152
> > 17235 15.238 nogbad.devel.pcs skylon.devel.pcs ARP  10.4.2.46 is at 00:30:05:93:54:c5
> > 17236 15.238 10.4.2.46        skylon.devel.pcs ARP  10.4.2.46 is at 00:30:05:83:54:c5
> 
> Indeed curious.

Indeed weird, curious, but explicable!  The BCM5721 has onboard 'IPMI
1.5 Remote Manageability' which is accessible over the LAN interface.
This had been configured at the same IP address (10.4.2.46) as the 
host system.  My guess is that this corresponds to the '93' MAC
address.  

Once the BIOS was used to configure this to another address the 
problem went away ...

Thanks for all the help
--
John Connett




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