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Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.
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Transcript of Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.
![Page 1: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/1.jpg)
Sybex CCNA 640-802Chapter 2: Ethernet Networking and Data
Encapsulation
Instructor & Todd Lammle
![Page 2: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/2.jpg)
Chapter 2 Objectives
• The CCNA Topics Covered in this chapter include:– Use the OSI and TCP/IP models and their associated
protocols to explain how data flows in a network
– Select the appropriate media, cables, ports, and connectors to connect switches to other network devices and hosts
– Explain the technology and media access control method for Ethernet networks
– Explain network segmentation and basic traffic management concepts
– Select the appropriate media, cables, ports, and connectors to connect routers to other network devices and hosts
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![Page 3: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/3.jpg)
Ethernet Networking
• Ethernet is a contention media access method that allows all hosts on a network to share the same bandwidth of a link.
• Ethernet is popular because it’s readily scalable, meaning that it’s comparatively easy to integrate new technologies, such as Fast Ethernet and Gigabit Ethernet, into an existing network infrastructure.
• It’s also relatively simple to implement in the first place, and with it, troubleshooting is reasonably straightforward.
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![Page 4: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/4.jpg)
Ethernet Collision Detection
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CSMA/CD
![Page 5: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/5.jpg)
Half and Full Duplex
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Half-duplex Ethernet is defined in the original 802.3 Ethernet; Cisco says it uses only one wire pair with a digital signal running in both directions on the wire.
But full-duplex Ethernet uses two pairs of wires instead of one wire pair like half duplex. And full duplex uses a point-to-point connection between the transmitter of the transmitting device and the receiver of the receiving device.
Full-duplex Ethernet can be used in three situations:• With a connection from a switch to a host• With a connection from a switch to a switch• With a connection from a host to a host using a crossover cable
![Page 6: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/6.jpg)
Ethernet Addressing
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The MAC, or hardware, address is a 48-bit (6-byte) address written in a hexadecimal format.
![Page 7: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/7.jpg)
Binary Addressing
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Binary to Decimal Memorization Chart10000000 12811000000 19211100000 22411110000 24011111000 24811111100 25211111110 25411111111 255
BINARY 128 64 32 16 8 4 2 1 DECIMAL 10000100 1 0 0 0 0 1 0 0 132
11010010 1 1 0 1 0 0 1 0 210
10111000 1 0 1 1 1 0 0 0 184
10100110 1 0 1 0 0 1 1 0 166
Conversion Example
![Page 8: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/8.jpg)
Ethernet at the Physical Layer
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The IEEE 802.3 and original Ethernet Physical layer specifications.
![Page 9: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/9.jpg)
Ethernet Cabling
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Ethernet cabling is an important discussion, especially if you are planning on taking the Cisco exams.
Three types of Ethernet cables are available:
• Straight-through cable• Crossover cable• Rolled cable
We will look at each in the following sections.
![Page 10: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/10.jpg)
Straight Through
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The straight-through cable is used to connect• Host to switch or hub
• Router to switch or hub
![Page 11: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/11.jpg)
Crossover Cable
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The crossover cable can be used to connect• Switch to switch• Hub to hub• Host to host• Hub to switch• Router direct to host
![Page 12: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/12.jpg)
Rolled Cable
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Although rolled cable isn’t used to connect any Ethernet connections together, you can use a rolled Ethernet cable to
connect a host to a router console serial communication (com) port.
![Page 13: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/13.jpg)
Using Hyper Terminal
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Notice the settings for Hyper Terminal
![Page 14: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/14.jpg)
What type of cable is used?
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![Page 15: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/15.jpg)
What type of cable is used for each connection?
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![Page 16: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/16.jpg)
Data Encapsulation
When a host transmits data across a network to another device, the data
goes through encapsulation:• It is wrapped with protocol
information at each layer of the OSI model.
• Each layer communicates only with its peer layer on the receiving device.
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![Page 17: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/17.jpg)
Data Encapsulation
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![Page 18: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/18.jpg)
PDU
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![Page 19: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/19.jpg)
Port Numbers
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The Transport layer uses port numbers to define both the virtualcircuit and the upper-layer process.
![Page 20: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/20.jpg)
Cisco’s Three-Layer Model
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The following are the three layers and their typical functions:• The core layer: backbone• The distribution layer: routing• The access layer: switching
![Page 21: Sybex CCNA 640-802 Chapter 2: Ethernet Networking and Data Encapsulation Instructor & Todd Lammle.](https://reader036.fdocuments.in/reader036/viewer/2022081506/56649f535503460f94c78194/html5/thumbnails/21.jpg)
Written Labs and Review Questions
– Open your books and go through all the written labs and the review questions.
– Review the answers in class.
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