In the Local Area Network Addressing video (part of How Networks Really Work webinar) I covered numerous obscure LAN addressing details including:

• There’s no layer-2 address in Fibre Channel frames (because FC is routing not bridging);
• Why is the multicast bit the lowest bit (0x01) in the first byte on Ethernet but the highest bit (0x80) on Token Ring or FDDI;
• How some NIC manufacturers never got the memo on what OUI really means.