'Lan segment' diaporamas de présentation

Hubs, Bridges and Switches

Hubs, Bridges and Switches. Lecture 3. Interconnecting LANs. Q: Why not just one big LAN? Limited amount of supportable traffic: on single LAN, all stations must share bandwidth limited length: 802.3 (Ethernet) specifies maximum cable length (need small a)

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Ethernet

Ethernet. Dominant LAN technology: cheap $$ for 100Mbs or even 1Gbps! first widely used LAN technology Simpler, cheaper than token LANs and ATM Kept up with speed race: 10, 100, 1000 Mbps. Metcalfe's Ethernet sketch. Bus: Thin coaxial cable.

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Lecture 4

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Chapter 2 Fundamental Network

Chapter 2 Fundamental Network. Reviewing the core components of Microsoft TCP/IP and other network protocols Fundamental concepts of Networking: TCP/IP DNS DHCP WINS. Network Protocols. NetBEUI NWLink (IPX/SPX) TCP/IP. Network configuration on W2K3.

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Review of MAC protocols

Review of MAC protocols. channel partitioning, by time, frequency or code Time Division, Frequency Division random access (dynamic), ALOHA, S-ALOHA, CSMA, CSMA/CD carrier sensing: easy in some technologies (wire), hard in others (wireless) CSMA/CD used in Ethernet CSMA/CA used in 802.11

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Today

Assign Homework Ch5 #1,4,5,7,11,12 Due Wednesday October 22 Ch5 #13-16,18,20 Due Monday, October 27 Project #2 due this Monday Oct 20! Opportunities for undergraduate research and employment Exam #2 rescheduled: Now Friday, Oct 31 (covering Ch4-5) Continue with Chapter 5. Today.

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Telecommunication Systems and Technology

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Communication Networks

Communication Networks. Recitation 3 Bridges & Spanning trees. Bridges. Link layer device stores and forwards Ethernet frames examines frame header and selectively forwards frame based on MAC dest address when frame is to be forwarded on segment, uses CSMA/CD to access segment

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VLANs

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Ethernet

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Token Passing: IEEE802.5 standard

Token Passing: IEEE802.5 standard. 4 Mbps maximum token holding time: 10 ms, limiting packet length packet (token, data) format: SD, ED mark start, end of packet. IEEE802.5 standard. AC access control byte: token bit: value 0 means token can be seized, value 1 means data follows FC

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VLANs

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NASA Tests e-VLBI concept from the Madrid Deep Space Network to JPL

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Token Passing: IEEE802.5 standard

Token Passing: IEEE802.5 standard. 4 Mbps maximum token holding time: 10 ms, limiting packet length packet (token, data) format:. IEEE802.5 standard. SD, ED mark start, end of packet AC access control byte: token bit: value 0 means token can be seized, value 1 means data follows FC

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CMPT 371

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DATA LINK LAYER

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Q and A for Ch. 17

Q and A for Ch. 17. CS 332, Spring 2014. Fiber Modems. Q: Why use fiber modem extensions? Is it to save money on not having to use as much fiber (otherwise wouldn't it be easier to use all fiber)?

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ITIS2110 Lab 9

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Infrared Data Systems

Infrared Data Systems. Jeff Welch jpwelch@spectrixcorp.com www.spectrixcorp.com 220 Terrace Drive Mundelein, IL 60060 847.837.8650 Fax: 847.837.8670. Infrared Data Systems - Introduction. TV Remote Controls give incorrect image of IR

275 views • 13 slides