When IT assets are in off-site locations, controlled server rooms, or the network administrator is in a different location, they need a secure way to remotely access the USB, RS232/422/485, or Ethernet console management port of every device on the network.
However, when 24/7 uptime is expected this single point of access is not enough. When a Network Administrator needs to monitor, manage, troubleshoot, or re-boot critical IT assets, they will generally access the devices directly over an Ethernet network. The core idea is to preserve 24/7 uptime of your network by ensuring you always have access to critical IT assets like routers, switches, firewalls, servers, power, storage, and telecom appliances that operate the organizations' backbone communication framework. OOBM can be used to remotely reboot devices that have crashed and manage powered-down devices. The primary benefit of an out-of-band management interface is its availability when the network is down, a device is turned off, in sleep mode, hibernating, or otherwise inaccessible.
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