URBANIAK@G.BBN.COM (06/19/88)
Since its last posting, a substantial number of individuals and some vendors have contributed additions and corrections to this list. Some Known Ethernet and IEEE802.3 "Type" Fields 6/18/88 The 13th and 14th octets of an Ethernet or IEEE802.3 packet (after the preamble) consist of the "Type" or "Length" field. These values are managed by XEROX. Some assignments are public, others private. Current information includes: Xerox Public Ethernet Packet Type documentation; IEEE802.3 Std; NIC RFC960; contributions from network managers and vendors. Hex 0000-05DC IEEE802.3 Length Field (0.:1500.) 0200 Xerox PUP (conflicts with IEEE802.3 Length Field range) (see 0A00) 0201 Xerox PUP Address Translation (conflicts ...) (see 0A01) 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 0888 Xyplex 0900 Ungermann-Bass network debugger 0A00 Xerox IEEE802.3 PUP 0A01 Xerox IEEE802.3 PUP Address Translation 0BAD Banyan Systems 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 7000 Ungermann-Bass download 7002 Ungermann-Bass diagnostic/loopback 8003 Cronus VLN 8004 Cronus Direct 8005 HP Probe protocol 8006 Nestar 8010 Excelan 8013 Silicon Graphics diagnostic 8014 Silicon Graphics network games 8015 Silicon Graphics reserved 8016 Silicon Graphics XNS NameServer, bounce server 8019 Apollo DOMAIN 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 807C Merit Internodal 8080 Vitalink TransLAN III Management 809B EtherTalk (AppleTalk over Ethernet) 80DE TRFS (Integrated Solutions Transparent Remote File System) 80F3 AppleTalk Address Resolution Protocol (AARP) 8107 Symbolics Private 8108 Symbolics Private 8109 Symbolics Private 8137 Novell 9000 Loopback (Configuration Test Protocol) 9001 Bridge Communications XNS Systems Management 9002 Bridge Communications TCP/IP Systems Management 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 Some Known Ethernet Vendor Addresses 6/18/88 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. 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), or globally-assigned versus locally-assigned addresses, some of the known addresses do not follow the scheme. 00000C Western Digital 00002A TRW 00005A S & Koch 000093 Proteon 00009F Ameristar Technology 0000AA Xerox Xerox machines 0000C0 Western Digital? 0000DD Gould 000102 BBN BBN internal usage (not registered) 001700 Kabel 00DD00 Ungermann-Bass 00DD01 Ungermann-Bass 020701 Interlan UNIBUS or QBUS machines, Apollo 020406 BBN BBN internal usage (not registered) 02608C 3Com IBM PC; Imagen; Valid 02CF1F CMC Masscomp, Silicon Graphics 080002 Bridge 080005 Symbolics Symbolics LISP machines 080008 BBN 080009 Hewlett-Packard 080010 AT+T 080014 Excelan BBN Butterfly, Masscomp, Silicon Graphics 080017 NSC 08001A Data General 08001B Data General 08001E Apollo 080020 Sun Sun machines 080025 CDC 080028 TI Explorer 08002B DEC UNIBUS or QBUS machines, VAXen, LANBridges (DEUNA, DEQNA, DELUA) 080045 ??? 080047 Sequent 080049 Univation 08004C Encore 08004E BICC 080068 Ridge 080069 Silicon Graphics 08006E Excelan 08007C Vitalink TransLAN III 080089 Kinetics AppleTalk-Ethernet interface 08008B Pyramid 08008D XyVision XyVision machines AA0003 DEC Global physical address for some DEC machines AA0004 DEC Local logical address for systems running DECNET Some Known Ethernet Multicast Addresses 6/18/88 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