URBANIAK@G.BBN.COM (05/31/88)
Below are the current lists of values known at BBN for: Ethernet Type Fields; Ethernet Address Vendor assignments; Ethernet Multicast Address assignments. As these values are not published by the IEEE, we maintain these lists for our use, and for distribution. Please send corrections and updates directly to me at Urbaniak@BBN.COM. Current Ethernet and IEEE802.3 "Type" Fields 5/5/88 The 13th and 14th octets of an Ethernet or IEEE802.3 packet (after the preamble) consist of the "Type" or "Length" field. These are formerly assigned by Xerox, currently assigned by IEEE. Some assignments are public, others private. Information currently available includes: Xerox Public Ethernet Packet Type documentation; IEEE802.3 Std, but not yet further documentation from IEEE; NIC RFC960; knowledge of some BBN Private Type Field values. Hex 0000-05EE IEEE802.3 Length Field 0600 Xerox NS IDP * 0800 DOD Internet Protocol (IP) * # 0801 X.75 Internet 0802 NBS Internet 0803 ECMA Internet 0804 CHAOSnet 0805 X.25 Level 3 0806 Address Resolution Protocol (ARP) * (for IP and for CHAOS) 0807 XNS Compatibility 081C Symbolics Private 1000 Berkeley Trailer negotiation 1001-100F Berkeley Trailer encapsulation 1600 VALID-machine protocol? * 5208 BBN Simnet Private % 6000 DEC unassigned 6001 DEC Maintenance Operation Protocol (MOP) Dump/Load Assistance 6002 DEC Maintenance Operation Protocol (MOP) Remote Console 6003 DECNET Phase IV 6004 DEC Local Area Transport (LAT) 6005 DEC diagnostic protocol (at interface initialization?) 6006 DEC customer protocol 6007 DEC Local Area VAX Cluster (LAVC) 6008 DEC unassigned 6009 DEC unassigned 8003 Cronus VLN 8004 Cronus Direct 8005 HP Probe protocol 8006 Nestar 8010 Excelan 8035 Reverse Address Resolution Protocol (RARP) 8038 DEC LanBridge Management 8039 DEC unassigned 803A DEC unassigned 803B DEC unassigned 803C DEC unassigned 803D DEC Ethernet Encryption Protocol 803E DEC unassigned 803F DEC LAN Traffic Monitor Protocol 8040 DEC unassigned 8041 DEC unassigned 8042 DEC unassigned 805B Stanford V Kernel, experimental 805C Stanford V Kernel, production 809B EtherTalk (AppleTalk over Ethernet) 80F3 AppleTalk Address Resolution Protocol (AARP) 9000 Loopback (Configuration Test Protocol) FF00 BBN VITAL-LanBridge cache wakeups % * These protocols use Ethernet broadcast, where multicast would be preferable. # BBN Butterfly Gateways also use 0800 for non-IP, with IP version field = 3. % BBN Private Protocols, not registered Ethernet Vendor Addresses 4/29/88 Ethernet hardware addresses are 48 bits, expressed as 12 hexadecimal digits (0-9, plus A-F, capitalized). These 12 hex digits consist of the first/left 6 digits (which should match the vendor of the Ethernet interface within the station) and the last/right 6 digits which specify the interface serial number for that interface vendor. Currently we have noted the following vendor addresses, on the BBN Corporate Ethernet. 000093 Proteon 0000AA Xerox Xerox machines 000102 BBN BBN internal usage (not registered) 00DD00 Ungermann-Bass 020701 Interlan UNIBUS or QBUS machines 020406 BBN BBN internal usage (not registered) 02608C 3Com IBM PC; Imagen; Valid 02CF1F CMC Masscomp 080002 Bridge 080005 Symbolics Symbolics LISP machines 080009 Hewlett-Packard 080010 AT+T 080014 Excelan BBN Butterfly, Masscomp 08001A Data General 08001E Apollo 080020 Sun Sun machines 080028 TI Explorer 08002B DEC UNIBUS or QBUS machines, VAXen, LANBridges (DEUNA, DEQNA, DELUA) 080047 Sequent 08004C Encore 080068 Ridge 080089 Kinetics AppleTalk-Ethernet interface 08008B Pyramid 08008D XyVision XyVision machines AA0003 DEC Physical address for some DEC machines AA0004 DEC Logical address for systems running DECNET Ethernet addresses might be written unhyphenated (e.g. 123456789ABC), or with one hyphen (e.g. 123456-789ABC), but should be written hyphenated by octets (e.g. 12-34-56-78-9A-BC). These addresses are physical station addresses, not multicast nor broadcast, so the second hex digit (reading from the left) will be even, not odd. At present, it is not clear how the IEEE assigns Ethernet block addresses. Whether in blocks of 2**24 or 2**25, and whether multicasts are assigned with that block or separately. A portion of the vendor block address is reportedly assigned serially, with the other portion intentionally assigned randomly. If there is a global algorithm for which addresses are designated to be physical (in a chipset) versus logical (assigned in software), I am unaware of the algorithm. Current Ethernet Multicast Addresses 5/5/88 Ethernet Type Address Field Usage Multicast Addresses: 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-FF-FF-FF AB-00-04-01-xx-yy 6007 DEC Local Area VAX Cluster (LAVC Cluster group yy) 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
Hornig@ALDERAAN.SCRC.SYMBOLICS.COM (Charles Hornig) (05/31/88)
For those collecting such information, Ethernet type codes 8107, 8108, and 8109 are assigned to Symbolics, Inc. for internal use.