Abstract: A system to facilitate identification of intermediate switches within a network switching fabric is described. The system includes a processor and a machine readable medium storing instructions that, when executed, cause the processor to detect a neighbor change event at a switch port of a network switch, determine whether a switch port neighbor device coupled to the switch port is trusted, set a status of the switch port as failed upon a determination that the switch port is untrusted, block network traffic through the switch port and generate an alert indicating that untrusted switch port neighbor device is coupled to the switch port.

Abstract: An apparatus includes a navigational guidewire and a suction device. The navigational guidewire includes a sensing element, an outer member and a conductor. The sensing element is configured to respond to positioning within an electromagnetic field. The conductor extends along the length of the outer member and is in communication with the sensing element. The shaft assembly has an open distal end. The shaft assembly also defines a suction lumen and a guidewire lumen extending through the open distal end. The guidewire lumen is dimensioned to receive the sensing element of the navigational guidewire.

Abstract: A needlepoint fabric mount includes two fabric support bars and two parallel side rails for supporting the bars in spaced position to hold the sheet of fabric in taut condition between the bars. Each bar holds the fabric by an elongate longitudinal slot with an elongate rigid locking bar inserted into the slot and for locating the strip therein. The bar and the slot are shaped such that the bar can be loosely inserted into the slot through the open mouth on top of the strip and such that tension in the fabric from one side of the transverse member pulls one side of the bar member into engagement with an adjacent slot side to pinch the fabric between the bar and the slot side. The bar is triangular in cross-section and the slot side is inclined from the surface of the transverse member at an angle greater than ninety degrees. The side rails and the bars are rectangular in cross-section defining a side containing the fabric.