Home > Communication Service Provider Solutions > Telecom Multicloud Foundation > Canonical > Guides > Reference Architecture—Canonical Charmed OpenStack (Ussuri) on Dell EMC Hardware > Introduction
A Dell EMC PowerEdge rack solution is agnostic to the top of rack (ToR) switch a customer may choose. For a management network, role reference implementation in this document uses the Dell EMC S3048-ON switch. Two of the Dell EMC Networking S5248F-ON switches are used at the leaf-layer of the standard leaf-spine topology. The two switches are used to implement high availability on the data network. A pair of switches of similar or better capacity may be added at the spine-layer of the topology, if wanted.