GUID for RIS

[Cameron]

Can someone clarify if MAC Address is same as GUID - for RIS purpose? If
not, what tool is
good to find GUID from central location? I prefer not to walk around 600
computers to obtain their GUID for prestaging purposes on RIS.

 

[Michael Buchardt]

Hi Cameron

The GUID can be two things in RIS terms,

1) Your computer might have a GUID and it can be found either on the cabinet
or on the
motherboard.

2) It can be the MAC adresse prefixed with 20 zero´s i.e
000000000000000000000efa25be56bf

Network monitor (or a packet sniffer of your choice) is great way of finding
the GUID/MAC address or you could look in your DHCP console for all the
MAC´s if you are using DHCP in your environment.

/Michael Buchardt

 

[S.J.Haribabu]

Hi,

MAC address is different from GUID address. Go thru the following article
on this

When a PXE client connects to the server, one of the items that is
exchanged before you are presented with a logon screen is the GUID of the
computer. The GUID is a 128-bit integer (16 bytes) that has a very low
probability of being duplicated. The GUID is stored with the computer
account object that is created in Active Directory. Network adapters that
do not have a PXE boot ROM do not have a GUID, so the Boot Information
Negotiation Layer (BINL) uses the Media Access Control (MAC) address to
create a GUID. (The MAC address is a number that is unique on the network
at that time.) Therefore, the newly created computer account object is
actually associated with the network adapter, not the computer.

If you move the network adapter to another computer, RIS thinks that the
new computer is the old computer. The administrator must delete the GUID
from the CAO for the old computer. If a user tries to install the new
computer using a different computer name, a duplicate GUID warning displays
the names of the computers on the network that already have the same GUID.
Relationships of GUIDs to CAOs should be 1 to 1.

To locate the GUID for client computers //No centralize software to find
out GUID on client computers
==================================

The computer's globally unique identifier (GUID) appears in the following
areas:
A label on the side of the computer case.
A label within the computer case.
The basic input/output system (BIOS) of the client computer.
Note

The computer's GUID is supplied by the manufacturer.
The GUID must be in the form {dddddddd-dddd-dddd-dddd-dddddddddddd}, where
d is a hexadecimal text digit.
For example: 8 hexadecimal text digits, followed by 4, then 4, then 4, then
12, such as the following:

{921FB974-ED42-11BE-BACD-00AA0057B223}
Valid entries for the client GUID are restricted to the following:
0 1 2 3 4 5 6 7 8 9 a b c d e f - A B C D E F

The dashes are optional and spaces are ignored.
The GUID can also be entered in the wire format. In this format, the
initial 16 characters of the GUID are transposed. For example, if you
entered the following GUID in wire format as follows:
0123456789ABCDEF0123456789ABCDEFthe display would be as follows:

GUID in wire format:

01234567 89AB CDEF 0123456789ABCDEFGUID in display format:
{67452301-AB89-EFCD-0123-456789ABCDEF}

Thanks,

(e-mail address removed)

This posting is provided "AS IS" with no warranties, and confers no rights.