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- ** $Filename: ARCNET.txt $
- ** $Revision: 1.3 $
- ** $Date: 92/01/10 15:18:56 $
-
- S2WireType_Arcnet 7
-
- ios2_DataLength:
- 506 byte MTU (because of the possibility of two byte Types).
- Packets of size 254, 255, or 256 bytes are padded to 257 bytes before
- transmition.
-
- Station Address:
- ARCNET hardware may have addresses set with jumpers, DIP switches
- or software. Different drivers may therefore behave differently
- with S2_CONFIGINTERFACE.
-
- Hardware addresses should be assigned by users from highest to lowest
- because there is some efficiency gained in the token passing scheme
- this way. For example, on a three node network, hardware numbers 254,
- 253 and 252 should be used rather than 1, 2 and 3.
-
- Raw reads and writes:
- Short Packets (1-253 bytes)
- Destination Address (1 byte)
- Source Address (1 byte)
- Count (256-N-Type length) (1 byte)
- Padding (to byte number Count)
- Type (1 or 2 bytes)
- Data (N bytes)
-
- Long Packets (257-506 bytes)
- Destination Address (1 byte)
- Source Address (1 byte)
- zero (1 byte)
- Count (512-N-Type length) (1 byte)
- Padding (to byte number Count)
- Type (1 or 2 bytes)
- Data (N bytes)
-
-
- Multicast: Not Supported
-
- Broadcast: Supported
-
- Promiscuous: Generally Not Supported
-
- Packet Type Numbers for ARCNET are assigned by:
- Datapoint Corporation
-
- Some Common Packet Type Numbers
-
- decimal hex description
- ------- --- -----------
- 221 DD AppleTalk
- 240 F0 TCP/IP -- IP (RFC 1051)
- 241 F1 TCP/IP -- ARP (RFC 1051)
- 212 F0 TCP/IP IP (RFC 1201, proposed)
- 213 F1 TCP/IP -- ARP (RFC 1201, proposed)
- 214 D6 TCP/IP -- RARP (RFC 1201, proposed)
- 247 F7 Banyan Vines
- 250 FA Novell IPX
-