This post gives a brief overview of Switched WAN networks and their theory of operation.

# Category: Data Link Layer

Contains posts on data link layer of computer networking

## Overview of Switched WAN Networks

This post gives a brief overview of Switched WAN networks and their theory of operation.

## Basic Overview of the PPP protocol

## Basic Overview of the PPP protocol

This post gives a basic overview of the role of the PPP protocol and its theory of operation.

## Overview of VLAN and its basic theory of operation

## Overview of VLAN and its basic theory of operation

This post gives an overview of VLAN. It describes the process of VLAN trunking, VLAN tagging, VLAN port types, VLAN classification methods. It also gives a brief overview of the basic theory of operation of a VLAN aware L2 Switch.

## Role of the Spanning Tree Protocol in a Layer 2 Network

## Role of the Spanning Tree Protocol in a Layer 2 Network

This post gives a brief description of the basic theory of operation of the Spanning Tree Algorithm. It describes the problem of L2 broadcast frame loops in a L2 Network due to redundant paths and then describes how the spanning tree algorithm overcomes this problem.

## Basic Theory of Operation of a L2 Switch or Bridge

## Basic Theory of Operation of a L2 Switch or Bridge

This post briefly describes the basic theory of operation of a L2 Switch or a bridge. It basically takes about Address Learning, L2 Forwarding and Ageing of Entries.