As part of the move from per-row to per-rack redundancy model hosts in codfw rows A and B need to be configured / moved to new per-rack vlans/subnets. This work can be tackled once we have completed the physical move of all hosts in those rows from old 'asw' switch devices to new 'lsw' ones.

DB hosts may present additional challenges once the basic renumbering has been done. I believe we may use server IP addresses for DB grants, although it's been suggested this is no longer the case.

Are there other elements we need to consider? Creating this task so we can discuss options for planning and testing the eventual move.