A method in an optical Wavelength Selective Switch, WSS for multidirectional switching of optical signals, which optical WSS comprises a reflective element , a first tributary port , a second tributary port , a third port and a fourth port , the method comprising: configuring the optical WSS to switch a first optical signal on a specific wavelength band, between the third port and the fourth port , with the reflective element , and switching an optical signal between the first tributary port and the second tributary port with the reflective element , wherein the switching comprises to switch a second optical signal, within the same specific wavelength band, between the first tributary port and the second tributary port , with the reflective element , wherein the switching the optical signal between the first tributary port and the second tributary port comprises adjusting the reflective element , causing a first angle , defined by an incident beam of the optical signal, incident on the reflective element , and the normal of an effective reflective plane of the reflective element , to equal a second angle , defined by the normal and a reflected beam of the optical signal, reflected from the reflective element , wherein the third port is a third tributary port, and the fourth port is a common port, and wherein the method further comprises reusing the same specific wavelength band between the third port and the fourth port to provide a switching capability between a pair of the tributary ports for a same configuration of the reflective element which switches the first optical signal on the specific wavelength band between the third port and the fourth port , wherein the switching capability between the pair of the tributary ports is based on additional reflections due to imperfect isolation among the ports, wherein the pair of the tributary ports comprises the first tributary port and the second tributary port , and wherein the ports are mechanically arranged next to each other in a row with very small distance from each other so as to enable the additional reflections. configuring the optical WSS to switch a first optical signal on a specific wavelength band, between the third port and the fourth port , with the reflective element , and switching an optical signal between the first tributary port and the second tributary port with the reflective element , wherein the switching comprises to switch a second optical signal, within the same specific wavelength band, between the first tributary port and the second tributary port , with the reflective element , wherein the switching the optical signal between the first tributary port and the second tributary port comprises adjusting the reflective element , causing a first angle , defined by an incident beam of the optical signal, incident on the reflective element , and the normal of an effective reflective plane of the reflective element , to equal a second angle , defined by the normal and a reflected beam of the optical signal, reflected from the reflective element , wherein the third port is a third tributary port, and the fourth port is a common port, and wherein the method further comprises reusing the same specific wavelength band between the third port and the fourth port to provide a switching capability between a pair of the tributary ports for a same configuration of the reflective element which switches the first optical signal on the specific wavelength band between the third port and the fourth port , wherein the switching capability between the pair of the tributary ports is based on additional reflections due to imperfect isolation among the ports, wherein the pair of the tributary ports comprises the first tributary port and the second tributary port , and wherein the ports are mechanically arranged next to each other in a row with very small distance from each other so as to enable the additional reflections. <EOS>