On Tue, 12 Oct 2010 15:40:25 +0200 Michel Lammertink <mlammertink@xxxxxxxxx> wrote: > Hi all, > > I've read many messages on this mailing list with the question about > setting a static MAC address on the bridge interface, but two questions > remain: > > 1. Why should the MAC address of the bridge match the address of one of > its interfaces? Setting the MAC address to a different value does not > generate an error, but the bridge is not working properly (Local data > does not arrive). No longer a requirement. It was just a good way to ensure a good address that was unique, and not being used by other systems. > 2. Why does the bridge by default choose the "lowest" MAC address, > instead of the MAC address of the first port added, as is proposed by > the standard [1]? It was a convenience in original design to choose a consistent value. Since ports can be added in any order, using the lowest seemed like a good idea for the original author. This has been maintained for backwards compatibility. > [1] IEEE802.1D, Par. 7.12.5. > Quote: "The Bridge Address may be the individual MAC Address of a > Bridge Port, in which case, use of the address of the lowest numbered > Bridge Port (Port 1) is recommended." > > Thanks in advance, > > Michel. > _______________________________________________ > Bridge mailing list > Bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx > https://lists.linux-foundation.org/mailman/listinfo/bridge -- _______________________________________________ Bridge mailing list Bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/bridge
