Ixia Net Optics 10 GigaBit LR iBypass Switch with Product Details
The iBypass Switch monitors the attached device by sending a Heartbeat packet to the device. If the iBypass Switch does not receive the Heartbeat response, it automatically switches network traffic to bypass the unresponsive device - even if the device is still receiving power. The iBypass continues to send the Heartbeat, and will restore traffic flow through the device as soon as the link is restored.
Additional Resources: Product Manuals