IT Certification and Training Blog

Andrew Messier

Recent Posts

ICMP Port Numbers

Posted by Andrew Messier on Aug 24, 2017 11:20:34 AM

Various application layer protocols listen on specific ports. For example, when you want to visit a website, the HTTP request that exits your computer is destined for TCP port 80 on the remote server. The source port on your computer is an arbitrary ephemeral port. The request is processed on the server, and data returns to your computer destined to the previous source port where your web browser (probably Chrome) is ready and waiting.

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Tags: ICMP Port Numbers

Cisco Live 2017 - What Makes NetSim Different

Posted by Andrew Messier on Jun 20, 2017 3:46:32 PM

With CiscoLive 2017 quickly approaching, I'm looking ahead and reviewing my notes from last year. One question we frequently receive throughout the conference is, "What makes NetSim different than ____?" or, "I have real equipment, so why would I use NetSim?" We enjoy answering this question because people normally walk away with a better understanding of our product and plan to use it for themselves or for their students. My goal is not to knock the other options, because there are a lot of great resources out there. Instead I aim to be as informative as possible to help you make a smart buying choice.

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Tags: NetSim, Andrew Messier, Cisco Labs, GNS3, Cisco Live 2017

NetSim 10.10 Released

Posted by Andrew Messier on Nov 10, 2015 2:26:33 PM

Hi Everyone

NetSim 10.10 was released today. This update includes 10 new CCNP labs for GLBP, BGP, EIGRPv6, and OSPFv3. Minor document updates and bug fixes are also included. This release wraps up our coverage of BGP. We expect one more release covering a few more GLBP topics to be delivered next, We now have labs covering of every topic in CCNP. A complete list of each new lab is below:

ROUTE:

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NetSim 10.8 Released

Posted by Andrew Messier on Aug 6, 2015 1:39:00 PM

Hi Everyone,

NetSim 10.8 was recently released. This update includes 11 new labs and minor document updates to existing content.

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