When you are a network engineer or a developer, you may want to test your skills in a virtual environment rather than playing with your machine or production environment. Because you never know what could go wrong. What is VMware’s workstation and Fusion? VMWare workstation pro is a Software program that would let you install different operating systems, be it … Read More
[Solution] How to Configure SNMP on Rhel (Redhat) or CentOS
The other day I was working on adding some of the Redhat servers in production for monitoring. I also got the SNMP community string from the team who is managing the monitoring tools as well. I even informed them I would configure the SNMP on the server in another 5mins :).Do you know what happened when I logged into the … Read More
How to create Bridge and Vlan sub-interfaces in Linux – Nuage SD-WAN lab Part 2
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
[Solution] You need at least 8.6GB disk space to install Ubuntu. The computer has only 2.0GB
I was working on a topology where I had to add a Ubuntu desktop client to simulate the end-user machine. I tried to install Ubuntu on the KVM hypervisor. Downloaded the Ubuntu ISO file, moved the Ubuntu-desktop ISO file to /var/lib/libvert/images folder on the KVM server I was working on. Selected network configuration and started the VM installation. There were … Read More
5 Steps to change the display resolution in Linux
When you install Redhat Linux enterprise on a server, by default, it takes the display resolution as 800 x 600 or 1024 x 768. Also, when you go to display settings, you would be disappointed to see there are no options available to increase the display resolution either. You can change the display resolution RedHat and centos machine by following … Read More
[Solution] device eth0 does not seem to be present, delaying initialization centos
The other day I was working on a POC lab where I had to simulate a DNS server (Centos version 7) in GNS3. I think it was for one of the nuage sdwan gns3 labs.Took a copy of centos DNS VM from existing KVM host, added into gns3 by going to edit preferences and under Qemu VM’s. Dragged the Centos … Read More
