Friday, July 22, 2016

Network Engineers need Linux

Although I am my no means an expert in Linux (yet), I have done the swap.  I have dropped Windows for a Mint 17.3 Linux.  Since I work in the network consulting realm, it does make things (some things) a little simpler.  I am a fan of Windows 10, but the good about Linux far out weighs the good about Windows.



Benefits:
  • Become more familiar with commands that are regularly used to install and troubleshoot Cisco and other vendor appliances
  • terminal services are much more fluid and many variants are available
  • VIRL and GNS3, in my opinion, run much more efficiently on Linux.
  • Over all performance increase 
  • Less bloat in my OS
  • The new Linux distros' GUIs are as good as, if not better than Windows
  • IT'S FREE!
Drawbacks:

  • Visio and a few other office like products
  • I like Outlook much better than Thunderbird or Evolution

*** I still have Windows 10 installed on my hard drive for now if I need to use certain applications


More info on current Linux distributions: Click Here

More info on Mint: Click Here

Wednesday, July 6, 2016

Cisco VIRL Installation

So I finally had the chance to install Cisco VIRL.


Here are a few things that I learned:

  • Installation on bare metal is a pain
    • it is totally possible and is doable, but installing on a free esxi host is much easier
    • interfaces get tricky unless your box matches the base config exactly
  • ESXi is your friend
    • if you have an old PowerEdge 710 server laying around you might as well run ESXi on it an load the pre-configured OVA
    • no messing with linux interfaces in the server
    • just have to build the back end networking in ESXi
  • Don't use the minimum required RAM
    • purchased the 30 node license, but quickly ran out of 32GB (only ran 14 nodes)
    • maxed out the server at 128GB and I can max out my node limit
  • Cisco's community links don't work (as of 7/6/16)
    • all of the google results redirect you to a parked domain
    • this makes troubleshooting and tips a pain if something gets screwed up
    • community forum exists, but it hard to get to threads directly at the moment
  • YOU CAN EXPORT TO GNS3!
All in all I think its great that you can run multiple types of devices (NXOS, IOS, IOSXE, switches).  If you have someone paying for it I would get it, but GNS3 will still be my personal go-to software.  

Here is a link to Cisco's documentation: Click Here
If you'd like some detailed info on doing a Bare Metal install (on a poweredge server): Click Here