1. Cisco Certified Network Associate
CCNA
Cisco Certified Network Associate
قال تعالي ” و قل رب زدني علما ”
Mohammed Samir
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2. Router Internal Components
Processor
Interfaces
Memory
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3. Router internal components
CPU
RAM
Flash
NVRAM
Buses
ROM
Interfaces
Power Supply
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4. Router physical characteristics

5. Router external connections
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6. Connecting LAN interfaces
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7. Connecting WAN interfaces
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8.
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9. Memory RAM ROM FLASH : ( IOS comprised ) NVRAM : ( configuration file)
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10. ROM POST BOTSTRAP RXBOOT ( initial IOS ) ROMMON www.arabhardware.net
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11. Switch LED indicators

12. Port LEDs during Switch POST
1. At the start, all port LEDs are green.
2. Each LED turns off after its test completes.
3. If a test fails, its LED turns amber.
4. System LED turns amber if any test fails.
5. If no test fails, POST completes.
6. On POST completion, LEDs blink then turn off.
Slide 1 of 1
Purpose: This slide describe the POST on the Cat 1900 switch.
Emphasize: As you present this, the bullet points are a like a flow chart of events, tests, and alternate outcomes (depending on test failure or completion without failure). The Catalyst POST is executed only when the switch is powered up and needs to verify that the hardware can properly function.
This slide covers the LED perspective of initial start up.
For another perspective of initial start up, refer students to what they will see on the console--your next presentation slide.
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13. BOOTSTRAP Find IOS Load it at the RAM Find configuration file
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14. How can access cisco device
Virtual terminal
Console port
Telnet
Auxiliary port
Slide 1 of 1
Purpose: This slide describe the different ways students can access the Catalyst switch or Cisco router to create a new configuration file or alter an existing one. Emphasize: The network device can be configured from several locations. After you create the initial configuration, you can configure the ports or interfaces to enable configuration over virtual terminals ports (VTY).
Both router and switch support telnet access as a virtual terminal.
The router by default, supports virtual terminals 0 through 4. That means that router can be accessed for configuration purposes from the console port, the auxiliary port, and five VTY lines at the same time—up to seven people can configure the router at once.
You should caution students about the above point and inform them that security should be strictly observed through password protection to avoid unauthorized access of the configuration files.
Another component important to configuration in the network is a TFTP server.
The TFTP server can be a UNIX or PC workstation that acts as a central depository for files.
You can keep configuration files on the TFTP server and then download them to the device.
You can also configure the from a network management station running network management software such as CWSI, CiscoWorks or HP OpenView. Before you can access or change the configuration from a virtual terminal, TFTP server, or network management station, you must have the device configured to support IP traffic.
Configurations can come from many sources
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15. Management port – Console Port connection

16. Serial Port

17. Management port – AUX port connection
FYI Only! This is for connecting using a modem. Urrrg!
Management port – AUX port connection

18. Cisco IOS Software user mode privilleged mode configuration mode
Show- Copy-erase-debug
enable
privilleged mode
user mode
disable
Many show command
Exit
Conf t
configuration mode
configuration command
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