Out-of-band management
Management of networking equipment / From Wikipedia, the free encyclopedia
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In systems management, out-of-band management (OOB; also lights-out management or LOM) is a process for accessing and managing devices and infrastructure at remote locations through a separate management plane from the production network. OOB allows a system administrator to monitor and manage servers and other network-attached equipment by remote control regardless of whether the machine is powered on or whether an OS is installed or functional. It is contrasted to in-band management which requires the managed systems to be powered on and available over their operating system's networking facilities.
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OOB can use dedicated management interfaces, serial ports, or cellular 4G and 5G networks for connectivity.
Out-of-band management is now considered an essential network component to ensure business continuity and many manufacturers have it as a product offering.