...
In the R1 release the following subnets are fixed of length /24required as a minimum
| Network name | Subnet size | Needs to be externally routable**? | Function |
|---|---|---|---|
| 'oob' | Any* | No | Provides the connectivity between the Build server and RC and then RC and Rover/Unicycle nodes for Redfish API calls to configure/interogate the servers' BIOS. |
| 'host' | Any* | Yes | Provides the edge site's isolated network for MaaS provisioning (MaaS runs on the genesis node once provisioned). It does not need to be routable to any other network. |
| 'pxe' | /24 fixed in R1 | No | Provides the connectivity and BGP route exchange for the calico network. |
| 'ksn' | /24 fixed in R1 | No | Provides the openstack storage network |
| 'neutron' | /24 fixed in R1 | No | Provides the openstack neutron network |
| 'datapath' | Defined in openstack | No *** | Provides the openstack datapath network for the SR-IOV variant VMs |
| 'vxlan' | /24 fixed in R1 | No**** | Provides the openstack storage network for the OVS-DPDK variant VMs |
Notes:
* The 'oob' network may be split in to multiple subnets if required. Each server except the Build Server (and the RC if built on a VM) requires an iDRAC/iLO address which must be manually pre-provisioned into the server.
** Whilst not required designs where these subnet are externally routable are valid.
*** Whilst it is not required to have external or inter subnet connectivity on the datapath for VMs to have interaction with any entity outside the deployed edge pod this would be required.
**** In R1 for the Unicycle OVS-DPDK blueprint all VM traffic is vxlan encapsulated