Converting Hexadecimal to Decimal and Binary

The purpose of this post is to reference the CCNA Data Center (640-911) exam. This exam starts the conversation of IPv6 and since IPv6 is hexadecimal this post starts the talk about how we look at a hexadecimal values and learn how to convert them to binary and decimal. If you know subnetting skills then this won’t be that difficult. If you are new then check out The Wonders of Binary post as well as Part 1 and Part 2 of subnetting. Let’s get started! Continue reading

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Cisco VIRL is out … for a price

virl-logoJust wanted to put this up has Cisco has recently released VIRL. This is a network simulation platform that you can run Cisco operating systems on which are the same operating systems that run on Cisco hardware so anything you do in this simulation environment would be realistic if it was running on dedicated hardware. You would be able to test your changes before throwing them in production.

Some things that are different between VIRL and CML (Cisco Modeling Labs)

  • CML is Cisco TAC supported so you can call Cisco.  With VIRL you have community to help you out.
  • You have cap of 15 devices with VIRL. The CML version capacity is dependent on the hardware its running on.
  • CML is  for the “Big Guys”, and way more expensive. VIRL is just for personal/training use. (i.e CCNA, CCNP, CCIE)

To be upfront I have not purchased VIRL so I can’t tell you my thoughts on the product itself but personally I think this is great way to learn and study Cisco certifications when looking at CCNP and even CCIE. This is way cheaper than buying hardware or renting rack space. The price is $199.99 a year and I would assume this would cover any updates the product has. Cisco is also selling an Academic Version for $79.99 a year with some extra terms attached to it.

I’m curious if anybody has any thoughts on VIRL, what advantages do you think this network simulation program (VIRL) has compared to GNS3? What do you think VIRL’s target audience is? Is this price too high? Finally do you think the product is too green? Are you going to buy it or wait and see?

Comment below.

Links:

http://virl.cisco.com/

http://community.dev-innovate.com/c/virl

GNS3 1.0 Public is Out

gns3_logoGet your IOS, IOU, XRV, 1000v, HP, Juniper, Arista, and other images ready because that’s the beauty of GNS3, it’s here and ready to download. I’m excited for this release although the last post I did was In May of 2014, which was about getting GNS3 Alpha 3 working on Windows, you can see the full post here: GNS3 Alpha – Install and Setup. I have followed the GNS3 releases throughout the six months of them releasing Alpha and beta releases, as well as looking at changlogs of each release. So over the past six months we have seen some changes with the GNS3 team. The new logo, the new website, and of course the new 1.0 version of GNS3. They have also done a good job of setting up a new portal called the GNS3 Jungle which is for the community to ask all things networking all of which is available now. Check out all of it at http://www.gns3.com/.

Currently the GNS3 website is a little slow because I think we are all excited for the new software and can’t wait to get our hands on it but I was able to register so I’ll be posting more about the new version of GNS3 so keep that in mind, and check me out the GNS3 Jungle lewiryan.  Thanks again Stephen and Jeremy and the entire GNS3 team for building a great piece of software with the help of an awesome community. Another interesting read that I found was a post from NetworkCanuck about an Interview with Steven from GNS3, read it here: GNS3 – An Interview. So I’ll end this post with what are you loading into GNS3?

Setting up Enhanced vPC on Nexus 5600

So I’ve played around with two Cisco Nexus 5672UP switches which will be in production soon but before that I wanted to see what it took to get enhanced vPC online. Along the way I was into some new territory as I never stood up vPC before, so in this post I have posted some things to keep in mind and running-config examples, all of which I hope is helpful for a reference. Continue reading