Circuits (ONS 15454 SDH only) Use the Circuits subtab to view circuits routed on STPs. Item Description Type Displays the circuit type: • EtherSwitch group: For a stitched Ethernet circuit • EtherSwitch point-to-point: For an unstitched (or point-to-point) Ethernet circuit Circuit Name/Port Displays the name of a circuit that runs the STP, or the slot and port number of a port that runs STP. STP ID Spanning Tree Protocol ID number. VLANs List of VLANs assigned to the circuit or port. Refresh Refreshed the Circuits display. Help Displays context-sensitive help.