  In modern applications such as in the prospective smart factory, timely and
faultfree communication is one of the main concerns. Communication failures may
lead to huge economic losses. Moreover, they can even endanger human life.
Therefore, the TimeSensitive Networking (TSN) task group has introduced new
standards for real-time capable Ethernet, which also include a fault tolerance
mechanism called Frame Replication and Elimination for Reliability (FRER) as
IEEE standard 802.1CB. This standard introduces procedures and protocols for
bridges and end stations in time-sensitive networks. It also provides
mechanisms for the identification and duplication of frames to enable redundant
transmissions. In this paper, a simulation model is developed that implements
the IEEE 802.1CB standard in OMNeT++. In addition, as supplement to the
standard we propose a reliability mechanism for establishing redundant paths
and an error model to model transient and permanent errors. As proof of
concept, we evaluate the model with different topologies under various
conditions.
