February 14, 2020
Amitraj
Space Division Switching
-> Space Division Switching is a circuit switching technology in which a single transmission path is accomplished in a switch by using a physically separate set of crosspoints.
-> Space Division Switching can be achieved by using crossbar switch. A crossbar switch is a metallic crosspoint or semiconductor gate that can be enabled or disabled by a control unit.
-> The Crossbar switch is made by using the semiconductor. For example, Xilinx crossbar switch using FPGAs.
-> Space Division Switching has high speed, high capacity, and nonblocking switches.
Space Division Switches can be categorized in two ways:
1. Crossbar Switch
2. Multistage Switch
Crossbar Switch
The Crossbar switch is a switch that has n input lines and n output lines. The crossbar switch has n2 intersection points known as crosspoints.
Disadvantage of Crossbar switch:
1. The number of crosspoints increases as the number of stations is increased. Therefore, it becomes very expensive for a large switch.
The solution to this is to use a multistage switch.
Multistage Switch
-> Multistage Switch is made by splitting the crossbar switch into the smaller units and then interconnecting them.
-> It reduces the number of crosspoints.
-> If one path fails, then there will be an availability of another path.
-> Space Division Switching is a circuit switching technology in which a single transmission path is accomplished in a switch by using a physically separate set of crosspoints.
-> Space Division Switching can be achieved by using crossbar switch. A crossbar switch is a metallic crosspoint or semiconductor gate that can be enabled or disabled by a control unit.
-> The Crossbar switch is made by using the semiconductor. For example, Xilinx crossbar switch using FPGAs.
-> Space Division Switching has high speed, high capacity, and nonblocking switches.
Space Division Switches can be categorized in two ways:
1. Crossbar Switch
2. Multistage Switch
Crossbar Switch
The Crossbar switch is a switch that has n input lines and n output lines. The crossbar switch has n2 intersection points known as crosspoints.
Disadvantage of Crossbar switch:
1. The number of crosspoints increases as the number of stations is increased. Therefore, it becomes very expensive for a large switch.
The solution to this is to use a multistage switch.
Multistage Switch
-> Multistage Switch is made by splitting the crossbar switch into the smaller units and then interconnecting them.
-> It reduces the number of crosspoints.
-> If one path fails, then there will be an availability of another path.
