User guide

Redundancy Modes
E.1 Automatic Link Level Redundancy
E.1.1 Scope
The following components support the Redundancy Modes:
• MX8400 Multiplexer Main Card
• MX8400/HWO/PROFEC RJ-45 Ethernet Card with ProMPEG FEC
(The operations are only achievable across ports on the same physical card,
between the ports on a single option card or between the ports on the main
board).
E.1.2 Overview
Referring to Table E.1, the IP/GbE interface ports are configurable as redundant
backup connections for systems that require isolated input and output data
networks. There are two possible configurations that map the ports as input or
outputs.
E.1.3 Multiplexer Input Mode
The MX8400 data paths configurations for such system are described in Table E.1.
These are set via nCompass Control.
Table E.1 Input Mode Configurations
Input Mode Port 1 Port 2 Port 3 Port 4
1 Bidirectional Bidirectional Bidirectional Not Used Not Used
2 Independent Input Input Output Output
3 Autonomous Input Input Output Output
Bidirectional Mode. If the input mode is set to bidirectional then the output mode
setting is ignored. Redundancy switching is done between the bidirectional ports.
Independent Mode. Either one or both input ports can be configured as an input.
No switching is done between the inputs ports. If two inputs ports are employed then
they are totally independent of each other.
Autononomous Mode. Both inputs are used but only one at a time. Redundancy
switching is done between the two input ports.
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