how many digits are in a network mac address

It can use a Random Device Address for this purpose.

Serious manufacturers attempt to comply, but goofs happen in production.Ĭaveat: a Bluetooth device is not required to use its BD_ADDR as the Device Address that it broadcasts. Manufacturers should only use values from a segment of the registry they purchased from the IEEE Registration Authority, and should use a different values for each interface (Bluetooth, Wifi, Ethernet.) a device has. (EUI-48) created in accordance with section 8.2 ('Universal addresses') of the IEEE 802-2014 standard. The address shall be a 48-bit extended unique identifier Quoting the Bluetooth specification version 5.0 volume 1:Įach Bluetooth device shall be allocated a unique 48-bit Bluetooth deviceĪddress (BD_ADDR). If those other devices have a MAC that means that MAC is not in any way associated with the Ethernet or internet protocols and is completely independent.Ĭan the internet protocol run over some other layer that DOES NOT require any kind of MAC?īluetooth devices are required to have a unique deviceĪddress, assigned from the same registry as Ethernet and Wifi MAC addresses. How can the MAC address of a Bluetooth device be found?Ĭan Bluetooth Protocol be considered as running at level 3 of the OSI stack? (instead of the internet protocol)įrom what I know the Ethernet protocol runs at level 2 (the data link level).

If a phone or other device like a television has more devices that can receive MAC addresses do they have a different MAC for each device? For example a SMART TV that has a RJ-45 port, has a WI-FI antenna for connecting to the internet and has a Bluetooth antenna to connect headphone or do file transfer do each of those interfaces have a different MAC? Do Bluetooth devices such as phones, headphones, wireless speakers, televisions have MAC addresses also? If yes, are those MAC addresses from the same MAC address pool that the Internet Network Interfaces receive? Are the MAC address for these devices assigned by the same organization which assigns MAC addresses for Network cards?

ZigBee is more related to Bluetooth from what I know rather than Ethernet or Wi-Fi. I recently found out that ZigBee devices have MAC addresses.

How many digits are in a network mac address