Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. [email protected]...
-
Upload
alannah-bishop -
Category
Documents
-
view
247 -
download
2
Transcript of Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. [email protected]...
![Page 1: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/1.jpg)
Switching
ดร . อนั�นัต์� ผลเพิ่ �มAnan Phonphoem, Ph.D.
[email protected]://www.cpe.ku.ac.th/~anan
Computer Engineering DepartmentKasetsart University, Bangkok, Thailand
![Page 2: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/2.jpg)
2
Switching Point-to-point connection (Mesh)
wasteful Multipoint connection (Bus)
Distance (collision Domain) Number of devices
Switch
![Page 3: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/3.jpg)
3
Switched Network
![Page 4: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/4.jpg)
Switching Methods
Circuit switching Message switchingPacket switching
![Page 5: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/5.jpg)
5
Circuit switched network
![Page 6: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/6.jpg)
6
Switch
Creates a temporary connection between input/output
![Page 7: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/7.jpg)
7
A folded switch
![Page 8: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/8.jpg)
Switching Methods
Circuit switching Message switchingPacket switching
Space-division Time-division
![Page 9: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/9.jpg)
9
Space-Division Switches:Crossbar Switches
•Using electronic micro-switches (transistors)•Low efficiency (<25% use)
![Page 10: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/10.jpg)
10
Multistage Switch
• More efficiency• Blocking
![Page 11: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/11.jpg)
11
Switching path
• Also provide multiple paths
![Page 12: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/12.jpg)
Switching Methods
Circuit switching Message switchingPacket switching
Space-division Time-division
![Page 13: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/13.jpg)
13
TDMTime-slot interchange (TSI)
![Page 14: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/14.jpg)
14
Time-slot interchange
![Page 15: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/15.jpg)
15
Space VS. Time-Division Space-division switching
+ Instantaneous- # of cross points
Time-division switching + No cross point
- Create delay
![Page 16: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/16.jpg)
16
Time-space-time (TST) switch
Other combinations: TSST, STTS, etc.
![Page 17: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/17.jpg)
Switching Methods
Circuit switching Message switchingPacket switching
Datagram Virtual circuit
SVC PVC
![Page 18: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/18.jpg)
18
Circuit switching weakness Design for voice (telephone)
Non-voice transmission is bursty Data rate
Assume a single data rate for both ends
Inflexibility Same path (no adaptation)
![Page 19: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/19.jpg)
19
Datagram approach
Each packet is treated independentlyPacket is called Datagram
![Page 20: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/20.jpg)
20
Multiple channels in datagram approach
A XB Y
B
![Page 21: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/21.jpg)
Switching Methods
Circuit switching Message switchingPacket switching
Datagram Virtual circuit
SVC PVC
![Page 22: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/22.jpg)
22
Virtual Circuit Same route – choose at start PVC (Permanent VC)
Leased Line SVC (Switched VC)
Dial-up
![Page 23: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/23.jpg)
23
Switched virtual circuit (SVC)
![Page 24: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/24.jpg)
24
Switched virtual circuit (SVC)
![Page 25: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/25.jpg)
25
Switched virtual circuit (SVC)
![Page 26: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/26.jpg)
26
Circuit-switched VS. Virtual-circuit connection
Path VS. route Dedicated VS. sharing
Circuit-switched connection Virtual-circuit connection
![Page 27: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/27.jpg)
27
Virtual Circuit in WAN
![Page 28: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/28.jpg)
28
VCI
![Page 29: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/29.jpg)
29
VCI Phases
![Page 30: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/30.jpg)
30
Switching
![Page 31: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/31.jpg)
31
Source-to-destination data transfer
![Page 32: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/32.jpg)
32
SVC setup request
![Page 33: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/33.jpg)
33
SVC setup acknowledgment
![Page 34: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/34.jpg)
Switching Methods
Circuit switching Message switchingPacket switching
![Page 35: Switching ดร. อนันต์ ผลเพิ่ม Anan Phonphoem, Ph.D. anan@cpe.ku.ac.th anan Computer Engineering Department Kasetsart University,](https://reader033.fdocuments.net/reader033/viewer/2022052210/56649eca5503460f94bd934c/html5/thumbnails/35.jpg)
35
Message switching