This repository contains various network models and designs that I created or assigned to learn Cisco Packet Tracer. This is also a part of my Computer Network Course.

To add a device (connected with FastEthernet Port 0/1) to VLAN 101, simply write :

enable
configure terminal

interface fastEthernet 0/1

switch port mode access
switchport access vlan 101

no shutdown
exit

To add another device (connected with FastEthernet Port 0/4) to VLAN 101, simply write :

interface fastEthernet 0/4

switch port mode access
switchport access vlan 101

no shutdown
exit

After separting devices to different VLANs, save data permanently to non-volatile memory with this command:

do write memory

Suppose, 2 Switches are connected together with each of its FastEthernet 0/24 Port, Then we will write the following command on both of the switches :

enable
configure terminal

interface fastEthernet 0/24

switch port mode trunk



no shutdown
exit

do write memory

To setup a router's port (suppose gigabitEthernet 0/1) with an ip address 192.168.5.1, we will write:

enable
configure terminal

interface gigabitEthernet 0/1

ip address 192.168.5.1 255.255.255.0

no shutdown
exit

do write memory

• To setup a router's port (suppose gigabitEthernet 0/1) with an ip address 192.168.5.1, we will write:

enable
configure terminal

interface gigabitEthernet 0/1

ip address 192.168.5.1 255.255.255.0

no shutdown
exit

do write memory

• To forward an ip address of a network (192.168.5.0) to neighbour's router (192.168.60.7), we will write:

enable
configure terminal

ip route 192.168.5.0 255.255.255.0 192.168.60.7

no shutdown
exit

do write memory

• VLAN1 and VLAN2 are created using CLI.
• Usually, we know, same VLAN can communicate together
• But here, VLAN1 can also send a message to VLAN2 by using the router.
• For setting up default gateways, never forget to add them also into the same VLAN.

• All PCs are set to default VLAN(1)
• Usually, we know, switch can only communicate with the devices with same IP series.
• As the IP series of VLAN 1 and VLAN 2 devices are different, so using this concept, switch will only pass messages to same IP devices.
• But here, there is an one major fault. Changing the device IP will change their VLAN which is unsafe for a network.
  

© Most Humayra Khanom Rime