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- In systems management, out-of-band management involves the use of management interfaces (or serial ports) for managing networking equipment. Out-of-band (OOB) management is a networking term which refers to accessing and managing network infrastructure at remote locations, and doing it through a separate management plane from the production network. Cellular 4G and 5G networks are used today for out-of-band management and many manufacturers have it as a product offering. Out-of-band management is now considered an essential network component to ensure business continuity. Out-of-band management allows the network operator to establish trust boundaries in accessing the management function to apply it to network resources. It also can be used to ensure management connectivity (including the ability to determine the status of any network component) independent of the status of other in-band network components. In computing, one form of out-of-band management is sometimes called lights-out management (LOM) and involves the use of a dedicated management channel for device maintenance. It 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. 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. Both in-band and out-of-band management are usually done through a network connection, but an out-of-band management card can use a physically separated network connector if preferred. A remote management card usually has at least a partially independent power supply and can switch the main machine on and off through the network. Because a special device is required for each machine, out-of-bandwidth management can be much more expensive. Serial consoles are an in-between case: they are technically OOB as they do not require the primary network to be functioning for remote administration. However, without special hardware, a serial console cannot configure the UEFI (or BIOS) settings, reinstall the operating system remotely, or fix problems that prevent the system from booting. (en)
- 在计算机领域，带外管理（Out-of-band management）是指使用独立管理通道进行设备维护。它允许系统管理员远程监控和管理服务器、路由器、網絡交換機和其他网络设备。 相对的，带内管理是指使用常规数据通道（例如以太网、互聯網）来管理设备。带内管理的明显限制是这种管理容易受到被管理设备受攻击或损害的影响。要远程管理出现故障的网络服务器和路由器，IT管理员需要能通过网络访问它们。但如果网络或作業系統发生故障，就无法远程管理那些设备。 带外管理通过部署与数据通道物理隔离的管理通道来解决这个限制。 (zh)
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- 在计算机领域，带外管理（Out-of-band management）是指使用独立管理通道进行设备维护。它允许系统管理员远程监控和管理服务器、路由器、網絡交換機和其他网络设备。 相对的，带内管理是指使用常规数据通道（例如以太网、互聯網）来管理设备。带内管理的明显限制是这种管理容易受到被管理设备受攻击或损害的影响。要远程管理出现故障的网络服务器和路由器，IT管理员需要能通过网络访问它们。但如果网络或作業系統发生故障，就无法远程管理那些设备。 带外管理通过部署与数据通道物理隔离的管理通道来解决这个限制。 (zh)
- In systems management, out-of-band management involves the use of management interfaces (or serial ports) for managing networking equipment. Out-of-band (OOB) management is a networking term which refers to accessing and managing network infrastructure at remote locations, and doing it through a separate management plane from the production network. Cellular 4G and 5G networks are used today for out-of-band management and many manufacturers have it as a product offering. Out-of-band management is now considered an essential network component to ensure business continuity. (en)
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- Out-of-band management (en)
- 带外管理 (zh)
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