Loop protection

The loop protection feature enables detection of loops on the subport, and then disables the subport.

HPE OneView network loop protection uses two methods to detect loops:

1. The interconnect monitors the subports for special packets transmitted from upstream devices.

2. The interconnect reviews and intercepts common loop detection frames used in other switches, such as Cisco and ProCurve to prevent loop protection on the upstream switch, where externally generated frames are used to detect a loop condition.

When network loop protection is enabled on the Logical Interconnects screen, and a loop detection frame is received on a subport, the subport is disabled immediately until an administrative action is taken.

The administrative action involves resolving the loop condition and clearing the loop protection error condition. The loop detected status on a server can be cleared by editing the server profile and unassigning all networks from the connection corresponding to the server in the loop detected state or by selecting the Reset port protection action on the Interconnects screen.