layer 2 – Page 2 – Mikrotik Tips

Jun122017 by Achmad MardiansyahNo Comments

What is ethernet 10baseT, 100baseT, XXbaseYY?

Well, we used coaxial ethernet already in our house and it was cool :-) can now sharing file, printer, and even do voice communication using netmeeting :-p.(What is ethernet 10baseT, 100baseT, XXbaseYY) Unfortunately, by the time goes we see that the coaxial network is not reliable as we expect. the biggest issue for coaxial ethernet was the time required to troubleshoot the problem. often happens many times the connectors were not properly installed due to many reasons, computers were kicked, the lid was not tight, computers were accidently shaked and so the LAN card, etc. (more…)

Jun112017 by Achmad MardiansyahNo Comments

Coaxial ethernet, 10base2 or 10base5

coaxial ethernet, layer 2

Somebody was asking me about coaxial ethernet after reading this article. how is it looks like? Coaxial ethernet, 10base2 or 10base5. How did you learn networking? well, i started to learn networking in the late 1990s in a campus in Bandung, along with my first introduction to Linux. At that time, windows 98 used to be the common operating system that many people use. Networked computer already installed in some rooms, although many students were still using 3.5" floppydisk to copy their files. Flashdisk was a luxury item with the capacity that makes people's today is laughing out loud, 32 MB !!! :-D Laptops were still expensive goods, only some people have it, usually the VIPs :-p. Note: most of the laptops have no LAN card. that means you need to…

Jun102017 by Achmad MardiansyahNo Comments

Understanding how switch works

bridge, layer 2, switch

In this article, we will talk about understanding how switch works or bridge. This is a basic knowledge that network engineer must know. This is so basic where if you failed to understand this you will be having difficulties when doing troubleshooting problem in your network, especially related to this devices. So, what is (ethernet) switch / bridge? switch is a layer 2 device that is used as concentrator (central point) to connects other wired devices that is use ethernet technology. any picture of ethernet switch? see picture above how it connects devices? the picture below explains how devices communicate each other through a concentrator (switch). [caption id="attachment_300" align="alignnone" width="300"] image from www.thaigoodview.com[/caption] (more…)

Jun102013 by Achmad MardiansyahNo Comments

Setup mikrotik bridge

bridge, layer 2

This article will give an example of how to setup mikrotik bridge on routerboard. this technique can be applied on mikrotik devices that has more than one interfaces. Before implementing this tutorial, make sure you understand how switch works. ok lets start. prerequisite Make sure feature bridge is supported on your routerOS your device has more than one interface routerboard is looks like a switch, why do we need to make a bridge? can we just plug a cable on and it works like ordinary switch? did you know that on each interface of your routerboard there is a MAC address associated with it? yes, on each port/interface. why on each port? because routerboard is basically a router, and router is connecting networks, and each interface will connect to a network,…

May202013 by Achmad MardiansyahNo Comments

How packets travel over network by using Layer 2 and 3 information

layer 2, Layer 3

How packets travel over network by using Layer 2 and 3 information. This is a class-based course about Networking. In this session we were discussing how packets travel on the network using layer 2 (data link) and layer 3 (network) information. We decided to explain the concept using simulation, asking a volunteer from students to become a packet that travels over network. On his front, we put "headers" information (layer 2 and 3) so router can use that information to forward the packet to destination. (more…)