## 802.1Q VLAN Trunking

Let us take the below topology to understand the concept of trunking in switches.In the below topology, we have total four PC devices. PC-1 and PC-3 are connected to access port of switch 1 and under VLAN 22 and 23 respectively. Similarly, PC-2 and PC-4 are connected to access port of switch 2 and under VLAN 22 and 23 respectively. Let us say PC-1 wants to send a message to PC-2. Both are under VLAN 22(under same network: 44.44.44.0) but both the PCs are connected to different switches. Below is…

## Switch Virtual Interface

Switch virtual interface(SVI) is also VLAN interface or logical interface. To understand the concept, let us take the below topology: There are two PCs connected to switch. PC-1 is connected to Fa0/8 port and PC-2 is connected to Fa0/9. Both the ports of the switch are in different VLAN as you can see above. In addition, both PC are on different IP Network. PC-1 is on 44.44.44.0 Network and PC-2 is on 55.55.55.0 Network.Since both the PCs are on different VLAN (different broadcast domain), they cannot communicate with each other.…

## DHCP

DHPC stands for Dynamic Host configuration Protocol.For any device to be part of network, it must have an IP in order to communicate with other devices in the network.Here device or Host mean the same. IP AllocationIP can be assign to a device in two ways:1. Statically2. Dynamically Statically assigning an IP means manually configuring the device. However, this can be very hectic if we have to do for multiple devices. To overcome this tedious work, DHCP come in to picture. DHCP is a protocol that helps in configuring/assigning the…

## Conversions

In this, we will learn about the conversions. First two conversions viz. Binary to Decimal and Decimal to Binary are explained in detail and remaining two conversions viz. Decimal to Hexadecimal and Hexadecimal to Decimal are almost same as first two but with small difference. In all the conversions, we will take one number and convert in to another. Binary to DecimalBinary number is represented with 0 and 1. Binary Number: 0110 0011 Rightmost bit of binary number is LSB i.e. Least Significant bit and leftmost bit is MSB (Most…