Yogi's Outlook

In this GNS 3 config example I'm going to show different commands to connect PCs from different networks through routers and switches. I've already created the network diagram as shown below in the figure.  If you don't know how to add devices in GNS3, read my previous article  HERE I've added 3 PCs and gave hostnames as YCH1, YCH2, and YCH3. Also two switches YCSW1 and YCSW2. One router YCR1. You can see the IP addresses and ethernet links between all the devices as well as a trunk between switches through f1/2. I'm going to discuss following questions/topics: How to assign IP addresses with default gateways? How to create VLANs (VLAN 10 and VLAN 20) on both switches? How to assign the switch ports to the VLANs? How to configure Link Aggregation for the two links between YCSW1 and YCSW2? How to create VLAN trunk for the aggregated link between SW1 and SW2? How to assign IP addresses to the router interfaces? Always save your work after cre...

What is GNS3? In computing language, an emulator is software or hardware that allows one computer (the host) to act like another computer (the guest).  An emulator permits the host to run software or use exterior devices intended for the guest.  Graphical Network Simulator 3 (GNS3) is a network software emulator.  It allows the amalgamation of virtual and actual devices, used to simulate compound networks. It practices Dynamips emulation to simulate the Cisco IOS. GNS3 is used by many large corporations including Walmart, NASA and AT&T. GNS3 is also widespread for training of network skilled certification assessments.  Let's start discussing on how to use GNS3 in Linux OS. You can see in the image that if you've gns3 installed in the virtual OS environment or even on local PC, you can just search for it and open it by clicking on it. When you click on the GNS3, it's gonna pop up new project window. If you've saved project, you c...