Homework. Chapter 14: HW 22, 24, 27, 28, 29, 31, 34,36,45,58, 59 a, b, c. Chapter 14 Switching. Circuit Switching Packet Switching Virtual circuit packet switching Datagram packet switching Message Switching. Switch.
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Circuit switch may have n inputs and
m outputs
Switched Network
VC approach
Datagram approach
Switched VC
Permanent VC
Circuit-Switched Network
For mesh connection: No. of connections= n/2(n-1)=21
For point-to-point connection: No. of connections= n*m=12
Four switches are used to connect computers on the left to
Computers on the right
Crossbar Switch
Multistage Switch
1
1
2
5
6
10
11
15
No. of crosspoints=3x(5x2)2*2x(3x3)+3x(2x5)=78
Single stage 15x15=225
Switching Path
Switching Path
TDM without Time-Slot Interchange (TSI)
TDM with TSI
Time-Slot Interchange (TSI)
Packet Switching
Datagram approach
VC approach
Switched VC
Permanent VC
Switched Virtual Circuit
Switched Virtual Circuit
Switched Virtual Circuit
Datagram Approach
Datagram Approach, Multiple Channels
Message Switching