Ethernet        Type
Address            Field    Usage

Multicast Addresses:

09-00-09-xx-xx-xx    ????    HP multicasts
09-00-2B-01-00-00    8038    DEC LanBridge Copy packets
09-00-2B-01-00-01    8038    DEC LanBridge Hello packets
                1 packet per second, sent by the
                designated LanBridge
AB-00-00-01-00-00    6001    DEC Maintenance Operation Protocol (MOP)
                Dump/Load Assistance
AB-00-00-02-00-00    6002    DEC Maintenance Operation Protocol (MOP)
                Remote Console
                1 System ID packet every 8-10 minutes, by every:
                DEC LanBridge
                DEC DEUNA interface
                DEC DELUA interface
                DEC DEQNA interface (in a certain mode)
AB-00-00-03-00-00    6003    DECNET Phase IV end node Hello packets
                1 packet every 15 seconds, sent by each DECNET host
AB-00-00-04-00-00    6003    DECNET Phase IV Router Hello packets
                1 packet every 15 seconds, sent by the DECNET router
AB-00-00-05-00-00    ????    Reserved DEC
through
AB-00-03-FF-FF-FF
AB-00-04-00-00-00    ????    Reserved DEC customer private use
through
AB-00-04-00-FF-FF
AB-00-04-01-xx-yy    6007    DEC Local Area VAX Cluster groups
CF-00-00-00-00-00    9000    Ethernet Configuration Test protocol (Loopback)

Broadcast Address:

FF-FF-FF-FF-FF-FF    0600    XNS packets, Hello or gateway search?
                6 packets every 15 seconds, per XNS station
FF-FF-FF-FF-FF-FF    0800    IP (e.g. RWHOD via UDP) as needed
FF-FF-FF-FF-FF-FF    0806    ARP (for IP and CHAOS) as needed
FF-FF-FF-FF-FF-FF    1600    VALID packets, Hello or gateway search?
                1 packets every 30 seconds, per VALID station
