This publication deals with integration of NFV with distributed orchestration into a WMN-based disaster network. The NFV orchestrator defined by ETSI is designed as a logically centralised unit and therefore includes the possibility of a single point of failure. Due to the environment of a disaster, a WMN node hosting this centralised orchestrator might get destroyed at events such as aftershocks or bursting fires resulting in a breakdown of the NFV infrastructure as it cannot be maintained and orchestrated anymore. To eliminate this aspect, requirements for a distributed NFV orchestration are defined. The requirements are categorized into architectural and orchestration specific aspects and are derived from the characteristics of a WMN and conditions of a disaster environment. For realising a distributed NFV orchestration in the WMN-based disaster network according to the defined requirements, a novel concept consisting of multiple logical layers is presented. Lastly, additional problem areas during the integration of NFV dealing with the realisation of virtualised network functions and virtual networks are presented and a possible solution is suggested.
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