This object represents the switch port's current physical speed status. A value of unknown indicates that, the speed of the port is not known A value of autoNegotiate indicates that, port senses speed and negotiates with the port at the other end of the link for data transfer operation A value of half10 indicates that, port operates at 10mbps half duplex speed. A value of full10 indicates that, port operates at 10mbps full duplex speed. A value of half100 indicates that, port operates at 100mbps half duplex speed. A value of full100 indicates that, port operates at 100mbps full duplex speed A value of full1000sx indicates that, port operates at 1000mbps full duplex speed over multi mode fiber. A value of half1000 indicates that, port operates at 1000mbps half duplex speed. A value of full1000 indicates that, port operates at 1000mbps full duplex speed. A value of half2500 indicates that, port operates at 2500mbps half duplex speed. A value of full2500 indicates that, port operates at 2500mbps full duplex speed. A value of half5000 indicates that, port operates at 5000mbps half duplex speed. A value of full5000 indicates that, port operates at 5000mbps full duplex speed. A value of half10000 indicates that, port operates at 10000mbps half duplex speed. A value of full10000 indicates that, port operates at 10000mbps full duplex speed.