OOB Management is the second major part of the topology.
The Out-of-band (OOB) Management network is an isolated network for remote management of hardware including servers, switches, storage arrays, and rack power distribution units using their dedicated management ports.
The OOB Management network enables connections to the PowerSwitch SFS GUI. It also enables switch console access through SSH and rack server console access through the iDRAC. This network is also used to carry heartbeat messages between switches that are configured as VLT peers. For OOB Management network connections, one S3048-ON switch is installed in each rack as shown:
Figure 14. OOB management network connections
Four 10 GbE SFP+ ports are available on each S3048-ON for use as uplinks to the OOB management network core.
1 GbE BASE-T ports on each S3048-ON are connected downstream to hardware management ports on each device in the rack. This includes server node iDRACs and switch management ports. Management ports on other devices (such as PowerEdge server iDRACs, storage array management ports, and rack power distribution unit (PDU) management ports) are also connected to this network.
When running SmartFabric OS10, the S3048-ON functions as an OOB management switch with its factory default configuration. By default, all ports are in switchport mode, in VLAN 1, administratively up, and rapid per-VLAN spanning tree plus (RPVST+) is enabled. At a minimum, Dell EMC recommends changing the admin password to a complex password during the first login.