[ovs-dev] [PATCH] vswitch: Consistently set Nicira OUI.

Justin Pettit jpettit at nicira.com
Mon Feb 1 17:50:16 PST 2010


On Feb 1, 2010, at 4:43 PM, Jesse Gross wrote:

> The bottom line is that we should be consistent everywhere because otherwise we end up with the worst of both worlds.  Personally I prefer have the OUI set since it is nicer when looking at packet traces.  It's also friendlier to the rest of the world.  VMware sets their OUI on addresses they generate.

Is there a standard for randomly-generated "official" addresses?  We set that top bit of the third byte to indicate that the address is randomly generated, so that we could also assign real, static addresses if we need to down the line.  The IEEE doesn't like handing out additional OUIs unless you can prove that you've actually run out of the first block you were given.  I'm just curious if there's a better approach than my off-the-top-of-the-head suggestion of setting a single bit to indicate this.  I'd think VMware or someone has given this a little more thought.

--Justin






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