Table 1 Primary clusters of the SDN literature based on the proposed model
From: Multi-domain SDN controller federation in hybrid FiWi-MANET networks
| Â | Location distribution | Controller integration | Management openness | Domain heterogeneity |
|---|---|---|---|---|
Single datacenter | No | No/tight | No | No |
Multiple datacenters, centralized controller | Yes | No | No | No |
Multiple datacenters, distributed controllers | Yes | Tight | No | No |
Federated datacenters | Yes | Loosely | Yes | No |
Inter-domain operator | Yes | Tight | No | Yes |
Federated domains | Yes | Loosely | Yes | Yes |