从下 面的输出可知,sw-2连接到sw-3时使用的是哪个接口? sw2#show cdp neighbors Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge S - Switch, H - Host, I - IGMP, r - Repeater, P – Phone ,D -Remote,C -CVTA, M – Two-port Mac Relay Device ID Local Intrfce Holdtme Capability Platform Port ID Sw-1 Fas 0/1 170 S I WS-C3560- Fas 0/15 Sw-1 Fas 0/2 170 S I WS-C3560- Fas 0/16 Sw-2 Fas 0/5 162 S I WS-C3560- Fas 0/2