Out-of-band management
in systems management, the use of management interfaces (or serial ports) for managing networking equipment
In systems management, out-of-band management (OOB), or lights-out management (LOM), is a process for accessing and managing devices and infrastructure at remote locations through a management plane separate from that of 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.
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.
Out-of-band versus in-band
By contrast, in-band management through VNC or SSH is based on in-band connectivity (the usual network channel). It typically requires software that must be installed on the remote system being managed and only works after the operating system has been booted and networking is brought up. It does not allow management of remote network components independently of the current status of other network components. A classic example of this limitation is when a sysadmin attempts to reconfigure the network on a remote machine only to find themselves locked out and unable to fix the problem without physically going to the machine. Despite these limitations, in-band solutions are still common because they are simpler and much lower-cost.
“Out-of-band management” enters the record as in systems management, the use of management interfaces (or serial ports) for managing networking equipment. Crown Archives preserves that source wording while asking what Out-of-band, management and systems can confirm, complicate or overturn.
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“Out-of-band management” is worth following because a concise public description often conceals a longer documentary argument. Here, Out-of-band, management and systems provides the most credible route into that argument.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 5, 2026. The linked authority identifier is Q1824704. None of the 0 selected statements returned an explicit reference.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Out-of-band management” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.