How To Change Static IP In Ubuntu GUI and CLI ?

Saifudheen SidheeqNetworkingLeave a Comment

If you’re using Ubuntu Dekstop or server, and one day you decided to change the IP address of your ubuntu machine from automatic (DHCP) to static configuration. how do you achieve that? If you are using Ubuntu with GUI, it is pretty straightforward, but what if you don’t have GUI and the only option that you have is to configure … Read More

How I have setup my GNS3 | 10 Easy steps.

Saifudheen SidheeqGns3, NetworkingLeave a Comment

step by step install gns3 in windows

I have seen some of my friends and colleagues who are struggling to get their GNS3 up and running with no issues at all. Sometime they call me and say, Saif can you please take a look, it is not working! The problem with GNS3 is that after you get everything working and the next day when you come back … Read More

How To Connect Your VM To The VPN?

Saifudheen SidheeqNetworkingLeave a Comment

In some of my last blogs, I wrote about how you can install Virtual machines on different hypervisors such as KVM, VMware, VirtualBox, etc. I use the windows machine as a daily driver Virtual Machine on my Ubuntu box; having the choice of both operating systems at a time is excellent. And I can switch between them any time I … Read More

How to create Bridge and Vlan’s in Linux – Nuage SD-WAN lab Part – 2

Saifudheen SidheeqLinux, Networking, Nuage-SDN, SDNLeave a Comment

nuage underlay network setup

What is the underlay and Overlay network? When it comes to Nuage-SDWAN there are two types of networks that we have to use. First one is called the underlay network and the second one is called the overlay network. The underlay network is nothing but our traditional network which would help us to connect all the network equipment. Once the … Read More

Setup Hpe comware or MSR in gns3 and Telnet to Putty.

Saifudheen SidheeqNetworkingLeave a Comment

Most of the network engineers whom I know have worked with mainly Cisco gears and not Hpe Comeware devices, Including myself 🙂 And my transition wouldnt been easier if there was no GNS3. To get familiar with the Comware devices, what I have done is.. I have downloaded and installed Hpe VSR to my gns3. After that it was just … Read More

First Hop Redundancy Protocol – HSRP, GLBP and VRRP

Saifudheen SidheeqNetworkingLeave a Comment

Let me start off by showing some real life scenarios here, and then we would understand where do we use HSRP, GLBP and VRRP and its differences then we would fix the network. Instead of showing some labs right away. So let’s begin. We have Customer A , they are using a simple network topology as below. A router that … Read More

How does DHCP work in the network

Saifudheen SidheeqNetworkingLeave a Comment

DHCPACK

How does DHCP work in the network? Before we answer that question, we need to understand the different ways of configuring the IP addresses.You could use either DHCP or static IP configuration. You might already know the configuration of IP address statically on a computer. It requires you to go to the network properties of the network hosts and manually … Read More

9 Reasons why you should use a VPN

Saifudheen SidheeqNetworkingLeave a Comment

9 reasons why you need to use VPN

Countries around the world are going above and beyond to protect their citizens from internet threats. One example is that in some countries, which has made it impossible for its citizens to access social media sites. And in some of the western countries, they are using the internet to invade its citizens’ privacy, it only makes sense to protect yourself … Read More

How To Configure Netplan Network – Examples

Saifudheen SidheeqLinux, NetworkingLeave a Comment

ubuntu netplan configuration

Ever since Ubuntu changed it’s network configuration utility to netplan from the traditional configuration, many of them got so upset. Some of them are very annoyed to the point they even entirely removed the netplan and installed ifupdown back into the system. So is Ubuntu Netplan going to stay ?, if yes shouldn’t we learn how to configure them on … Read More

What is an ASN in BGP?- All you need to know about AS numbers

Saifudheen SidheeqNetworkingLeave a Comment

We all have configured Routing protocols and heard about the term ASN/AS numbers (Autonomous system number). However, when it comes to BGP, have you ever wondered what ASN really is and how you can get one?In this blog, let’s answer what ASN is in the BGP routing protocol, and it’s differences and types. A BGP public ASN or AS number … Read More

What is NTP? Configure Routers as the NTP server

Saifudheen SidheeqNetworkingLeave a Comment

What do you think is the best way for Network hosts to update its clock automatically?The answer to that is to use an NTP server, in this article lets find out what is NTP and its stratum values, and we would also configure Cisco and Comware routers as the NTP public and private servers. Why is NTP important? An NTP … Read More

Best Way To Stream VLC videos On Your Network

Saifudheen SidheeqNetworkingLeave a Comment

The VLC media player is great if you wanted to watch videos on your computer, tablet, or even on your smartphone. And the best part about this media software is that it not only play videos locally it also helps you stream videos over the network, meaning you can make your local machine as a video server and stream the … Read More

Easy way to connect GNS3 to the Internet on Windows host

Saifudheen SidheeqGns3, Networking1 Comment

Internet access on GNS3

The gns3 has evolved from just a simulator for Cisco IOS to a multivendor environment.You can simulate the physical network virtually in gns3 and it works great! Wouldn’t be cool if we can get the host internet access shared to the gns3 that way the devices in gns3 can access the internet and you can do a lot more with … Read More

(Solution) RIP not working in IOU gns3

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(Solution) RIP version 2 is not working in IOU gns3

I was working on my CCIE BGP lab the other day using Cisco IOU.While I was at it I had to advertise Loopback interfaces using Rip ver 2 so that I could create IBGP full mesh using the loopback. but it turns out, RIP was not working in my lab. This was the network topology I was working on. Testing … Read More

Arp protocol – Discover how ARP works in the real world

Saifudheen SidheeqNetworkingLeave a Comment

What is Arp protocol

If you are new to networking you must have heard the term called ARP protocol – address resolution protocol many times.You may be wondering or even confused. Well, what is the ARP protocol and how ARP works in the real world? Before we talk about how arp works we need to know something called a mac address. What is a … Read More