The feedback channel required for retransmission is disabled by default during the trial phase. This results in reduced availability with logs reporting "Lost X messages during the last 60 seconds". Please enable NAKs and ACKs in coordination with EUMETSAT for optimal availability.


In order to enable NAKs for all services you can run the workflow called Setup NAKs on EUMETCast Terrestrial Client from the EUMETcast machine provisioned.


  1. Login to Morpheus, go to Provisioning → select your EUMETcast machine.
  2. Click on Actions and select 'Run Workflow'
  3. Select the workflow called Setup NAKs on EUMETCast Terrestrial Client and hit execute.

Thanks to Stephan Finkensieper from CMSAF for contributing with the ansible script to the EWC community and to EUMETCast Team for finalizing it.