CCNA Episode 3 Troubleshooting Switch Media Issue
Here is the 3rd video for CCNA.
If you want to start lab the way it is before, you go to Manage Devices and then on each device, click on Reload Cfg.
I go through on the problem with Switch. Switch is a Layer 2 Device in general.
Each port has the associate MAC address.
In order to connect each other locally, it need Layer 1 and Layer 2 connectivity.
When trying to connect with help of IP address, it obvious it need Layer 3 connectivity. vLAN in switch help here and act as a management interface (normally native vlan) and help to telnet the switch.
PC can act as a router when it pinging its IP address. To ping the switch, it need to ping its vLAN interface. Each fastethernal - normally accompany Cat 5 cables, important for Layer 1 connectivity- which has its own IP address.
When acting as router, it may have its own table under show arp.
PC1- enable
PC1- show arp
It show the table of mac address and associated IP address. Normally they only 1 or 2 of them.
If its does connect with several more PC locally, it need the switch and one PC need to use Hyper terminal to access that switch.
Anyway enjoy this tutorial. I hope everyone understand me and trying to get my speech right which is never easy for me.
Here i discuss
Think you need to know is the OSI mode.
Layer 7 is Application Layer.
Layer 6 is Presentation Layer.
Layer 5 is Session Layer.
Layer 4 is Transport Layer.
Layer 3 is Network Layer.
Layer 2 is Data Link Layer.
Layer 1 is Physical Layer.
Each layer can talk to the layer below or above them and communicate.
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Take No Prisoners Walkthrough:- http://www.youtube.com/playlist?list=PLHk-OUo4Tk0BQ3ZwyGe1CrtmR60HWDp6s
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