Learn › BMC & Server Management
Chapter 10 on a real Ubuntu 24.04 workstation with a real IPMI 2.0 controller and a managed host that can answer from inside itself: the same controller reached over the network with an address and a sign-in, and from the host it manages with neither. Read the controller both ways and compare four identity fields to establish it is one device, watch the three IPMI kernel modules build the path and create /dev/ipmi0, trace how firmware described the KCS interface twice and the driver resolved it once, read the LAN configuration from both sides and find the gateway and VLAN parameters the in-band reading stops short of, read the user table from the host with no sign-in at all, and record which fault leaves which path.