Composability is an important property to
build complex applications. One important technique
to achieve composability, particularly in the time domain,
is multi-level hierarchical server-based design.
However, composability must not only be supported
among components sharing computing resources but
also in their interactions. In this paper we implement
hierarchical server-based traffic scheduling within the
Flexible Time-Triggered Switched Ethernet (FTT-SE)
protocol. The novelty in this work is the use of hierarchical
sporadic servers in such setting. We report an
efficient usage of the network bandwidth, short reponse
times and the temporal isolation across servers.