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This appendix describes the Token Ring and FDDI acronyms used in this manual.
| Acronym | Description |
|---|---|
| A and C bits | Address Recognized and Frame Copied bits |
| ARE | All routes explorer |
| ARP | Address Resolution Protocol |
| ASN.1 | Abstract Syntax Notation One |
| BPDU | Bridge Protocol Data Unit |
| CEM | Configuration Element Manager |
| CFM | Configuration management |
| CTS | Clear to send |
| D | Direction bit (in RIF) |
| DA | Destination address or duplicate address |
| DAS | Dual attachment station |
| DCE | Data Communication Equipment |
| DSAP | Destination Service Access Point |
| DSR | Data set ready |
| DTE | Data Terminal Equipment |
| DTR | Data terminal ready |
| ECM | Entity Coordination Management |
| ED | End Delimiter |
| ELM | Elasticity Buffer and Link Monitor |
| FDDI | Fiber Distributed Data Interface |
| FDU | FDDI uplink module |
| FS | Frame Station |
| GND | Ground |
| ID | Identifier |
| IP | Internet Protocol |
| LAN | Local Area Network |
| LED | Light emitting diode |
| LF | Largest Frame bits (in RIF) |
| LLC | Logical Link Control |
| LTH | Length bits (in RIF) |
| MAC | Media Access Control |
| MAU | Media Access Unit |
| Mbps | Megabits per second |
| MIB | Management Information Base |
| MIC | Media interface connector |
| MSB | Most significant bit |
| NA | Not applicable/Not available |
| NetBIOS | Network Basic Input/Output System |
| NIC | Network interface card |
| NVRAM | Nonvolatile random access memory |
| PCM | Physical Connection Management |
| POST | Power-on self test |
| RARP | Reverse Address Resolution Protocol |
| RC | Routing Control (bits in RIF) |
| RDn | Route Descriptor n (bits in RIF) |
| RFC | Request For Comment |
| RIF | Routing Information Field |
| RII | Routing Information Indicator |
| RMON | Remote Monitor |
| RMT | Ring Management |
| RO | Read-only |
| ROM | Read-only memory |
| RT | Routing Type bits (in RIF) |
| RTS | Request to send |
| RW | Read-write |
| RX | Receive |
| SA | Source address |
| SAS | Single attachment station |
| SC | Single exit connector |
| SC-Duplex | Two single-exit connectors |
| SD | Start Delimiter |
| SMT | FDDI Station Management |
| SNMP | Simple Network Management Protocol |
| SR | Source Route |
| SRDB | Source route data base |
| SRF | Source route frames |
| SRF | Status reporting frame (FDDI) |
| SRT | Source route transparent |
| SR/TLB | Source route to transparent bridge |
| STE | Spanning-Tree explorer |
| STP | Shielded twisted pair or Spanning-Tree Protocol |
| TB | Transparent bridge |
| TD | Transmit Data |
| TFTP | Trivial File Transfer Protocol |
| TRX | Token Ring switch |
| TTRT | Target token rotation time |
| TVX | Valid Transmission Timer |
| TX | Transmit |
| UDP | User Datagram Protocol |
| UNDA | Upstream neighbor duplicate address |
| UPS | Uninterruptable Power Supply |
| UTP | Unshielded twisted pair |
| VDC | Volts DC |
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