digraph cymru {
        label="Cymru PoP network topology proposal 4, october 2020"
        internet [ image="simplecloud.png" shape=none ]
        router [ shape=Mdiamond ]
        subgraph clusterhosts {
                label = "host interfaces 1...n"
                host_public [ shape=box label="eth0\npublic"]
                host_storage [ shape=box label="eth1\nstorage"]
                host_mgmt [ shape=box label="eth2\nmanagement"]
                host_idrac [ shape=box label="ethX\niDRAC"]
        }
        bastion [ shape=box label="bastion host eth0" ]
        subgraph clusteriscsi {
                label="iSCSI hosts 1...n"
                iscsi_storage [ shape=box label="storage interface"]
                iscsi_mgmt [ shape=box label="management interface"]
        }
        vlan82 [ label="VLAN 82\n38.229.82.0/24\npublic" ]
        vlan801 [ label="VLAN 801\n172.30.130.0/24\nstorage" ]
        vlan802 [ label="VLAN 802\n172.30.140.0/24\nmanagement" ]
        internet -> router -> vlan82 -> bastion -> vlan802 -> { host_mgmt, iscsi_mgmt, host_idrac }
        vlan82 -> host_public
        vlan801 -> host_storage
        vlan801 -> iscsi_storage
}
