2016-11-1-Internetworking-Concept.pdf - CPE.KU
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1 Internetworking Concepts รศ. ดร. อนันต์ ผลเพิ่ม Asso. Prof. Anan Phonphoem, Ph.D. [email protected] http://www.cpe.ku.ac.th/~anan Computer Engineering Department Kasetsart University, Bangkok, Thailand
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Transcript of 2016-11-1-Internetworking-Concept.pdf - CPE.KU
1
Internetworking Concepts
รศ. ดร. อนันต์ ผลเพิม่
Asso. Prof. Anan Phonphoem, [email protected]
http://www.cpe.ku.ac.th/~anan
Computer Engineering Department
Kasetsart University, Bangkok, Thailand
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Outline
Universal Service
Internetworking
Virtual Network
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Universal Services
Specific constraints
LAN – Fast/Local
WAN – Remote (large area)
No “one size fits all”
Universal services
communicate to other users
Heterogeneous (different technologies)
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Internetworking
Hardware
physical network interconnection
Software provides universal services
Called “internetwork” or “internet”
Not limited in size
Basic hardware Router
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Routers
Special-purpose hardware for interconnecting (different) networks
Up to layer 3
Multi-homed Host
Router A
Router B
Interface #1
Interface #2
Interface #3
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Internet Architecture
Heterogeneous
Connect LAN / WAN together (complex)
Internet Topology depends on
bandwidth
traffic
reliability
hardware cost(e.g. router)
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NontrinetGigabit EthernetFast EthernetATMMicrowaveLease LineFrame Relay
Thaisarn Uninet
Internet
OCS
LIB ENG
KU Gateway
50Year
SCI
FirewallKPS
SRI
CSC
RAT
NOP
SATITOCS
SPN
1G
1G34 M
2M
2M
6M
1G
128k
512k
512k
100M
24 April 2005
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Virtual Network
Internet protocol software
hides physical details including physical address
routing information
Application doesn’t care about physical
View communication as abstraction called Virtual Network
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Internet concept (Virtual)
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Internet concept (Physical)
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Protocols for Internetworking
De facto standard TCP/IP
The TCP/IP Internet Protocols
Application5
Transport4
Physical1
Network Interface2 Data Link layer
Internet3 Network layer
