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1CSNW1 – week 5. OSI Reference Model (herh.) All People Seem To Need Data Processing Bron: DevCentral.

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Presentatie over: "1CSNW1 – week 5. OSI Reference Model (herh.) All People Seem To Need Data Processing Bron: DevCentral."— Transcript van de presentatie:

1 1CSNW1 – week 5

2 OSI Reference Model (herh.) All People Seem To Need Data Processing Bron: DevCentral

3 10 Mbit/sec (baseband) 50 Ohm Thick Ethernet (10BASE5) (physical layer)

4 Vampier tap

5 Thin Ethernet (10BASE2) (physical layer)

6 hub = naaf UTP Ethernet 10BASE-T (physical layer)

7 Netwerkkaart (Thin Ethernet en UTP) Bron: Wikipedia

8 CSMA/CD (1) Carrier Sense Multiple Access CSMA/CD (ANSI/IEEE 802.3)

9 CSMA/CD (2) Collision Detection

10 Manchester Encoding

11 Start Frame Delimiter; DeSTination; SouRCe; Length/Type; octet = byte Ethernetpakket

12 Media Access Control (MAC) address n MAC48 (6 octetten) 2 48 = mogelijke MAC adressen n Voorbeeld:00:C0:0C:03:A3:44 n FF:FF:FF:FF:FF:FF als bestemming dan broadcast

13 - 10 Mb/sec => 100 nsec per bitcel - Snelheid in coax is 2/3 x lichtsnelheid => 2/3 ( ) = m/s - In 100 nsec 20 meter; ergo één bit is 20 meter lang Ethernet kabellengte (1)

14 - Eén segment max. 500 m en max. 5 segmenten - Max. 100 transceiver per segment met minimaal 2,5 m afstand - Dus (5 x 500) / 20 = 125 bits over de totale lengte van de kabel Ethernet kabellengte (2)

15 Ethernet Standards n The 10BASE system operates at 10 Mbps and uses baseband transmission methods n 100BASE 100 Mbps. Because it is 10 times faster than Ethernet, it is often referred to as Fast Ethernet. n 100BASE-TX: two pairs of high-quality twisted-pair wires n 100BASE-T4: four pairs of normal-quality twisted-pair wires n 100BASE-FX: fiber optic cable n 1000BASE Gigabit ethernet n 1000BASE-T: category 5e copper cabling n 1000BASE-SX: fiber optic cable n 1000BASE-LX: longer distances over single-mode fiber n 10GBASE (emerging technology)

16 Netwerkkoppeling (herh.) Application Transport Network Data Link Physical UTP Data Link Physical Application Transport Network Data Link Physical Data Link Physical Network Radio Bron: Jochen Schiller

17 Netwerk met VLANs Bron: CISCO

18 VLAN configuratie

19 Twee switches dmv trunk verbonden

20 802.1Q Frame Format (VLAN tagging)

21 Netwerk met Layer-3 Switch

22 Practicum Ethereal (Wireshark)

23 Bronnen n Ethernet (Wikipedia) Ethernet (Wikipedia) n IEEE Standards Association IEEE Standards Association n CISCO Systems, Inc. CISCO Systems, Inc. n Wireshark site Wireshark site n Jochen Schiller, “Mobiele Communicatie”, (Pearson

24 Opdrachten n Bestudeer hfdst n Maak opgaven 15.5 en 15.6


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