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Re: Bridge & it's MAC address question [message #7917 is a reply to message #7905]

Mon, 30 October 2006 15:28

Stephen Hemminger
Messages: 37
Registered: August 2006

Member

On Mon, 30 Oct 2006 15:27:14 +0300
Dmitry Mishin <dim@openvz.org> wrote:

> Hi,
>
> Could somebody explain, why bridge uses minimal MAC of the attached devices?
> It makes this address instable, variable during bridge life-cycle, which is
> not good for DHCP. For example, I want to attach multiple virtual devices to
> one physical. Then, I need to make sure that after each virtual device
> addition, bridge addr is not changed and still addr of the physical device.
> Why not to use MAC of the first attached device?
>

The bridge physical address is the minimum of all the attached devices.
This is done because the STP standard requires it. You can reset it
to be the same as any of the attached devices. This will not cause a problem
unless using STP.

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[Message index]

		Bridge & it's MAC address question By: Mishin Dmitry on Mon, 30 October 2006 12:27
		Re: Bridge & it's MAC address question By: Stephen Hemminger on Mon, 30 October 2006 15:28
		Re: Bridge & it's MAC address question By: Lennert Buytenhek on Fri, 15 December 2006 13:19
		Re: [Bridge] Bridge & it's MAC address question By: Stephen Hemminger on Fri, 15 December 2006 15:52

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