A Serial Switch that Blocks Break Commands

In many cases, a simple break command can cause certain types of servers to immediately reboot, resulting in a interruption of user access until the reboot cycle is completed. In most cases, a break command is received from a connected device, initiating an unnecessary reboot cycle and causing a delay while the server finishes booting up. In order to prevent unrequested reboot cycles, WTI Serial Switch (http://www.wti.com/c-46-serial-switch.aspx)products include a break command blocking option which allows the console server to prevent break commands from being passed along to a connected server.

The break command blocking option can be individually enabled or disabled at each RS232 port on the serial switch. When enabled, the break command blocking option will reject any break commands received from connected devices, as well as any electronic noise that could possibly be mistaken for a break character. This prevents break commands from being sent to the server, effectively preventing the server from being inadvertently rebooted and helping to minimize network down time by eliminating unrequested reboots.

Break command blocking is enabled/disabled via the serial switch port configuration menu, allowing administrators to select some ports that will be allowed to receive break commands, while blocking break characters from being sent to ports that might be connected to a server. Break command blocking helps to eliminate unnecessary service interruptions that would otherwise occur when the server receives a break command and initiates a reboot cycle.

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