User's Manual

Table Of Contents

Glossary

Entry Description

Rate-Constrained Traffic TTEthernet traffic that is used for applications with less stringent determinism

and real-time requirements than strictly time-triggered applications (ARINC 664

avionics traffic). RC traffic is ued for safety-critical aerospace applications that

depend on highly reliable communication and have moderate temporal quality

requirements, e.g., multimedia systems.

SFP Small Form-factor Pluggable, a compact, optical module transceiver.

SNMP Simple Network Management Protocol

SWE Switch Engine

TFTP Trivial File Transfer Protocol

TT See Time-Triggered Traffic.

Time-Triggered Traffic TTEthernet traffic that is used for applications with stringent determinism and

real-time requirements (IEEE 1588-compatible clock synchronization service,

real-time control [5]). TT traffic guarantees that bandwidth and latency are pre-

defined for each application. TT traffic is used for safety-critical aerospace ap-

plications that depend on highly reliable communication and have high temporal

quality requirements, e.g., closed loop control systems.

VAC Voltage, Alternating Current

VLAN Virtual Local Area Network

VL See Virtual Link.

Virtual Link A logical link that is used for all critical traffic. For RC traffic, a virtual link has the

properties as defined in the ARINC 664 standard. Hence, each virtual link is as-

sociated with a dedicated maximum bandwidth that is specified by the minimum

frame interval called bandwidth allocation gap (BAG) and the maximum frame

length. For TT traffic, a virtual link is characterized by exact timing information

and a maximum frame length.

TTEthernet Time-Triggered Ethernet, also TTE when used as a prefix.

Confidential and Proprietary Information

Document Number:

D-A664Lab-G-05-001