CCNA

Honelako gehiago

Dynatrace Assignment

by Gabriel Duarte

PLE y conectamos

by Ana García Naveros

What is the Immune System

by Caden Yu

Central topic

by Vicky Chow

CCNA

Operation of Data Networking

Subnetting

CISCO Products

Cisco Catalyst 6500

CISCO Stackwise

Multichassis EtherChannels (MEC)

Virtual Switching System (VSS)

Cabling

Straight vs Cross

Cross: PC <-> Router, Switch <-> Hub

Straight: Router <-> Switch, Router <-> Hub

Straight: PC <-> Switch, PC <-> Hub

Hub: TX3, TX6, RX1, RX2

Switch: TX3, TX6, RX1, RX2

Router: TX1, TX2, RX3, RX6

PC: TX1, TX2, RX3, RX6

Type

Fiber

10GBase-LR Little Connector

1000Base-LX Single-Mode 5KM / Multi-Mode 550M

1000Base-SC Square Connector Multi-Mode 220M ~ 500M

Each Cable needs a GBIC or SFP

Fiber Cleaver

UTP

Cat-5 UTP 100Base-TX

Cat-5e UTP 100Base-TX

Cat-6a UTP 10GBase-TX

Cat-6 UTP 1000Base-TX

802.3

48 Bits / 24 bits OUI + 24 bits Vendor Assigned

MAC Address / Physical Address

Switching Method

Cut-Through

Store-and-Forward

Collision & Broadcast

Full / Half Duplex

Excessive Collision

Late Collision

After 64 Bytes / 512 bits

Duplex Mismatch

CSMA/CD

Carrier Sense Multiple Access with Collision Detection.

Router

N Collision Domain N Broadcast Domain

Switch

N Collision Domain 1 Broadcast Domain

Hub

1 Collision Domain 1 Broadcast Domain

OSI

TCP Window Size

Jimbo Frame MTU 9000 Bytes

Default MTU 1500 Bytes

Encapsulation & Decapsulation

Layer 2 Data -> Frame

Layer 3 Data -> Packet

Layer 4 Data -> Segment

1 to 7 - De-encapsulation

7 to 1 - Encapsulation

TCP

Total: 20 Bytes

Acknowledge Number

Sequence No

80 Bytes

Uses a lower transmission to ensure RELIABILITY

Transmit Packet as stream

Send Transmission in sequence

Telnet

POP3

SMTP

FTP

HTTP

UDP

Header

CheckSum

Length

Destination Port

Source Port

8 Bytes

Characteristics

Higher Transmission Rate to support latency-sensitive application

8 byte header

Transmits Packets Individually

Protocol

VoIP

DNS

DHCP

IP

Source & Destination IP Address

QoS

Header: 20 Bytes

7 Layer

1 Physical

2 Data Link

Data 48-1500 Bytes

Type/Length 2 bytes

SA MAC 8 Bytes

DA MAC 8 Bytes

Premable 8 Bytes

FCS 4 Bytes

Encapsulated to become FRAME

3 Network

Encapsulated with IP

Encapsulatd to become PACKET

4 Transport

Encapsulated with TCP/UDP

Subtopic

Encapsulated to become SEGMENT

5 Session

6 Presentation

7 Application