I386, Windows 2000 Server, DECnet Pathworks I386, Windows XP Professional, DECnet PathworksĭEC AlphaServer 400 4/166, Digital Tru64 Unix 5.0 Alpha I386, Windows for Workgroups WFW 3.11, DECnet Pathworks for DOS and Windows Power Macintosh 9500 / PowerPC G4, Apple MacOS 9, Digital Pathworks for Macintosh I386, Windows NT 4.0 Server, DECnet Pathworks I386, Windows Server 2003, DECnet Pathworks

The DECnet network currently consists of the following nodes, all of them connected to HECnet (the global hobbyist DECnet): Node Name I try to maintain a list and descriptions of the numerous operating systems and hardware I play around with at my Freeshell/SDF page. The design of DECnet, its protocols and related documentation are available online at The DECnet Phase IV Specifications. It needs to be set to the value of (AREA*1024)+NODE, which is the same as the value of six Area bits followed by ten Node bits taken as a 16-bit integer. SCSSYSTEMID is a SYSGEN parameter used on OpenVMS systems. The highest possible DECnet address 63.1023 requires the MAC address to be AA-00-04-00-FF-FF. Swapping these two bytes and expressing in hexadecimal produces 0x01 and 0x04 which are the last two bytes of the MAC address of the ethernet adapter. Therefore the 16-bit DECnet address in binary is 0000010000000001, with the two bytes then being 0000010001.

For DECnet address 1.1, the six-bit AREA in binary is 000001. Thus the lowest possible DECnet address 1.1 requires the network adapter's MAC address to be AA-00-04-00-01-04. The two bytes of the 16-bit DECnet address (6 bits for AREA and 10 for NODE) are SWAPPED, and these two swapped bytes are the last two bytes of the MAC address.The first four bytes of the MAC address are always AA-00-04-00.In the world of DECnet, the six-byte MAC address of an ethernet adapter is keyed to the DECnet address of the node as follows: A 10-bit NODE number, ranging from 1 to 1023.A 6-bit AREA number, ranging from 1 to 63, followed by.that fit in 2 bytes (16 bits) as follows: The VMS SYSGEN parameter SCSSYSTEMID is also calculated and displayed based on the input.Ĭheck for a DECnet node at HECnet Node Status on QCOCAL VAXserver 3900 OpenVMS 7.3 »ĭECnet addresses are two numbers, expressed as. Enter either the DECnet Area and Node number, or the MAC address below. This is a simple javascript tool to convert between DECnet addresses and MAC addresses of ethernet network adapters connected to DECnet networks. DECnet - MAC address - SCSSYSTEMID Calculator

Convert mac address into bytes