CERN Data Centre Network Architecture: proposed evolution and implementation plan

In 2017 the IT-CS group decided to take advantage of the planned hardware upgrade of the data centre routers to deliver more advanced network features to the CERN Data Centre user community. In order to involve all relevant IT groups in selection and prioritisation of the desired features, a Data Centre Network Architecture (DCNA) working group was formed. This working group met several time throughout 2017. This document summarises the conclusions of the Working Group and details the features that will be implemented, giving an indication of the technologies that can be used. An implementation plan, with proposed deadlines dictated by existing constraints, is also included.