Address ranges
Recommended IP ranges for Multus networks ensure sufficient address space for Fusion Data Foundation deployments.
The following table recommends IP ranges for each Multus network or subnetwork:
| Network | Network range CIDR | Approximate maximum | Public or cluster network |
|---|---|---|---|
| Pod public network | 192.168.240.0/21 | Total of 1600 Fusion Data Foundation pods | Public network |
| Pod cluster network | 192.168.248.0/22 | 800 OSDs | Cluster network |
| Public node network | 192.168.252.0/23 | 400 OpenShift worker+storage nodes | Public network |
This should suffice for most organizations. The recommendation uses the last 6.25% (1/16th) of the reserved private address space (192.168.0.0/16). Approximate maximum Fusion Data Foundation and OpenShift sizing is noted, which accounts for 25% overhead to gracefully handle failure events.