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Category: Network

Spanning Tree Protocol (Root, Designated, Alternate Port)

Hello everyone, in previous article I have discuss about Spanning Tree Root Bridge.  And in this article I’ll continue to discuss about Spanning Tree Protocol for Root Port, Designated port and Alternate port. Root Port After the root bridge has been determined, the STA algoritm is used to select the root port. Every non root

Spanning Tree Protocol – Root Bridge

Hello Everyone,  in this article we’ll discuss about root bridge on spanning tree protocol. Root bridge are used for reference point for all path calculations on STP. So All of switch that connected are select layer 2 connection to the root bridge.  Switch exchange BPDUs to build loop-free topology is beginning with selecting a Root

Spanning Tree Protocol (STP) Concept

Hello Everyone, in this article I’ll discuss about STP. What is STP ? Spanning Tree Protocol is a Loop-prevention network protocol that allows for redudancy while create a loop-free Layer 2 topology. STP logically block the physical loops in the layer network to preventing frame from cirling the network forvefer. Impact from loops it will

DTP (Dynamic Trunking Protocol) | DTP Overview

DTP (Dynamic Trunking Protocol) is a Cisco Proprietary Protocol. DTP allows to switch devices select switchport mode (access or trunk) when connected to other switch. DTP has some characteristic as the following : is ON by default on Catalyst 2960 and 2950 switch series. For dynamic-auto is on by default on catalyst 2960 and 2950.

What is VLAN ? VLAN Overview

Hello Everyone, In this article I’ll discuss about VLAN. What is Vlans ? Vlan are Virtual Local Area Network.It is logical connections with other similar devices. When we placing device into vlan network, they are have the following characterictics : It provides segmentation of the various groups of devices on the same switch. It provides

How To Configuration DNS Server on Cisco packet tracer

DNS (Domain Name Service) is a service that used to make changes domain address becomes ip address and vice versa. For example when you access the website you will call domain address where those domain will be translate to ip address of google server by DNS Server. The ilustrated as the following image :

OSPF Router Types

Hello everyone, in this tutorial I’ll discuss about types of router and role of router in ospf routing protocol. before we discuss it, we need to known about AS (Autonomous System) it’s a combination of several network that have same configuration, same routing policy and it’s own by one organization or one network operator. when


Hello everyone, in this tutorial I’ll discuss about ospf area. ospf work with area if we have too many router that running ospf we can divide into several areas. The purpose of area to reduce LSA (Link State Advertisement) deployment on each ospf routers so that the router will only send the LSA to the

OSPF Introduction

In this tutorial I’ll discuss about OSPF (Open Shortest Path First). What is this ? And what is it for ? 😀 OSPF is a dynamic routing protocol capable of maintaining, managing and distribute routing information between networks although that networks can be change dynamically. OSPF including type of IGP (Interior Gateway Protocol) that has

How To Divide Subnet/IP Address using VLSM method

In this tutorial, I’ll discuss about how to divide a network segment or ip with the vlsm method.  VLSM (Varialbe Length Subnet Mask) that are method to divide one ip network to some network segment with different needs and uses on different number of client for each network. for the example on your network, you’re