OUI

From Openmoko

Revision as of 11:24, 27 February 2008 by Werner (Talk | contribs)

Jump to: navigation, search

OpenMoko has been assigned the OUI 00-1F-11. This page lists allocations we have made under this OUI.

MAC addresses

MAC addresses are of the form xx-xx-xx-yy-yy-yy where xx-xx-xx is the OUI and yy-yy-yy is an identifier assigned by the owner of the OUI.

First identifier Last identifier Date Purpose
00-00-00 00-FF-FF 2008-02-27 Reserved for R&D use
01-00-00 01-27-FF 2008-02-27 Factory allocation for GTA02 MP start

Generating MAC addresses

We currently assign MAC addresses in groups of three, randomized within each block of assigned addresses. To assign addresses, calculate how large a block you'll need. E.g., for 5000 groups, the block would have to be at least 15'000 or 0x3A98 addresses wide. Since we like round numbers, round up to 0x4000 (unless we know exactly how many we'll use, of course).

The mac tool can help with address generation. If we want to allocate the above block starting at 02-00-00, we could use the following command:

% cd svn.internal.openmoko.org/developer/werner/mac
% ./mac 020000 023fff >020000-023FFF

Then check the output from mac into SVN and enter the registration in this page.

Note that mac produces a different order of addresses for each invocation.

Personal tools

OpenMoko has been assigned the OUI 00-1F-11. This page lists allocations we have made under this OUI.

MAC addresses

MAC addresses are of the form xx-xx-xx-yy-yy-yy where xx-xx-xx is the OUI and yy-yy-yy is an identifier assigned by the owner of the OUI.

First identifier Last identifier Date Purpose
00-00-00 00-FF-FF 2008-02-27 Reserved for R&D use
01-00-00 01-27-FF 2008-02-27 Factory allocation for GTA02 MP start

Generating MAC addresses

We currently assign MAC addresses in groups of three, randomized within each block of assigned addresses. To assign addresses, calculate how large a block you'll need. E.g., for 5000 groups, the block would have to be at least 15'000 or 0x3A98 addresses wide. Since we like round numbers, round up to 0x4000 (unless we know exactly how many we'll use, of course).

The mac tool can help with address generation. If we want to allocate the above block starting at 02-00-00, we could use the following command:

% cd svn.internal.openmoko.org/developer/werner/mac
% ./mac 020000 023fff >020000-023FFF

Then check the output from mac into SVN and enter the registration in this page.

Note that mac produces a different order of addresses for each invocation.