OLD-PORT NODE DETECTION AND HUB PORT BYPASS

摘要

A hub port (400) in a fibre channel loop for detecting and bypassing attache d node ports (408) in an old-port state is disclosed. The hub port (400) includes a hub data source, a detect circuits (414), and an output control circuit (418). The hub data source supplies data to the hub port from a fibr e channel loop. The detect circuit (414) is configured to detect a valid non- arbitrated loop sequence from an attached node port indicating that the node port is in an old-port state. The output control circuit operated to bypass the node port from the loop when the valid non-aArbitrated loop sequence is detected.