[syslinux] Client-identifier option in PXE search order

[Nir Gal]

Hello,

I am not sure I follow, are these changes can be done in the PXELINUX
code ?
I have a setup with DHCP which can assign IP address to servers based on
their client-identifier , but my problem is that the PXELINUX search
order ( MAC , IP ... ) doesn't try to mach the client identifier.

Can you add this request to the TODO list of PXELINUX ?

Regards,
_________________________________________________

Nir Gal   |  +972-9-9717685 (o)   |   +972-54-499-6633 (m)

Manager, Customer Support

Voltaire - The Grid Backbone

www.voltaire.com


-----Original Message-----
From: H. Peter Anvin [mailto:hpa at zytor.com] 
Sent: Sunday, October 29, 2006 10:29 PM
To: Nir Gal
Cc: syslinux at zytor.com
Subject: Re: [syslinux] Client-identifier option in PXE search order

Nir Gal wrote:
> Hello,
>  
> Is there any plan to use the client identifier field as part of the 
> PXE search order ?
> This will be helpful when using PXELINUX on Infiniband network which 
> do not have 6 byte Ethernet MAC address.
>  

There is nothing in PXELINUX which makes the hardware address limited to
six bytes.  The "hardware address" in PXELINUX is ARP type followed by
however many bytes the hardware address happens to be (as reported by
the PXE stack.)

The problem with Infinibad is that its native address size is too large
for DHCP and PXE (20 bytes as opposed to 16 bytes available), so it
doesn't use the standard mechanism for reporting that.

It might be useful to detect the special case of hlen == 0 and pull the
local address out of the ClientIdentifier in that case.

	-hpa