Create Vlan and Configure VTP for switches in Cisco Packet Tracer
Vlan means Virtual Local Area Network. Physically it looks same Network but Logically It's different. And that is why It is called Virtual LAN. Normally the End devices can communicate to the End devices belong to same Vlan but not to different Vlan.
If End devices are connected to a switch, belong to two or more different Vlans, you'll need a trunk port to send the data to It's destination. You can do it by configuring VTP. VTP means VLAN Trunking Protocol. You need to add the connection with Cross Over Cable in between two Switches. And make those Interfaces to Trunk Port. After doing this, End Devices of Same Vlan can communicate to each other.
