A good network design is an important step to bringing a Ceph cluster online. If your networking is handled by another team, then make sure they are included in all stages of the design, as often an existing network will not be designed to handle Ceph's requirements, leading to poor Ceph performance and impacting existing systems.
It's recommended that each Ceph node be connected via redundant links to two separate switches so that, in the event of a switch failure, the Ceph node is still accessible. Stacking switches should be avoided if possible, as they can introduce single points of failure, and in some cases both will be required to be offline to carry out firmware upgrades.
If your Ceph cluster will be contained in only ...
