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List of missing switch features on GNS3

Here it is: Access Switch Device Manager (SDM) TemplateACL – Improved Merging AlgorithmARP OptimizationBGP Increased Support of Numbered as-path Access Lists to 500BGP Restart Neighbor Session After max-prefix Limit ReachedBGP Route-Map Continue Support for Outbound PolicyClear Counters Per PortDHCP SnoopingDHCP ... Read More »

How to Use Virtual PC Simulator in GNS3


One or more PCs are needed to test some features, like VLANs, HSRP,… To make this possible with GNS3, I use what is called Virtual PC Simulator, or VPCS. Download Virtual PC Simulator You can download Virtual PC Simulator for free on the ... Read More »

GNS3 Unsupported Commands on NM-16ESW

As I mentioned before, I have a GNS3 lab on my laptop, on which I’m emulating a Cisco 3725 with a NM-16ESW card. As I am progressing through the chapters, I’ll post all the commands that are not supported by it, ... Read More »



Here’s the lab. I got a problem running EIGRP after several changes. It seems that no router would establish neighborships anymore. The “debug eigrp packet hello” on HQ router showed that it does not receive hellos out its serial interface.However, ... Read More »

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