How to configure IOU in GNS3 for real Cisco Switching Labs

Use .ova for GNS3-IOU instead of pre configured VM. We all may have heard the saying GNS3 is great for practicing routing labs but switching Nah Nah!! Don’t underestimate the power of GNS3. It has a special IOU feature which will let you emulate real Cisco Switch both L2 & L3 in GNS3 without any trouble. […]
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Gaining access to an unconfigured Cisco 3750 Switch without Console, Telnet and SSH Access

Huh!! What happens when you need to configure a Cisco 3750 immediately for production network but unfortunately you don’t have console, telnet, or SSH access? I know it’s damn scary and if it happens at 02:00 hours then you have no one to help you. Problem: Recently during an installation, I faced the exact same […]
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Monitoring & Securing your Cisco devices with Syslog & TACACS + Server – Basics

While deploying logging and authentication solution for a company, I came across a very interesting technology called TACACS + and Syslog. Though I have worked with Syslog previously but TACACS was a new protocol for me. Now, why suddenly someone would deploy these two protocols and also at the same time? Yes… you guessed it […]
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How to work with Cisco IOS in GNS3

As in my previous post  I have shared some working Cisco IOS for GNS3, now I am going to show you how to use those with the latest version of GNS3 which can be downloaded from GNS3’s official website. The IOS must be compatible with GNS3 and can be added to it by following the simple […]
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