Show 48 – Juniper Junosphere

This week we talk to Juniper about their Junosphere emulator and make the case for why the current version is very good but not suited for the Enterprise market ( because its actually too good ) and question why they are charging a customer for the hosted service. junosphere, unlike other emulators, is a fully detailed and accurate version that supports as many features as possible – it’s the ‘real deal’ not a cut down version.

In return, Greg makes the case that the Enterprise does not need the features they are discussing or offering. The software needs to be available on a desktop, it needs to be free and freely available. If Juniper wants to get “into” the Enterprise, then give customers the software tools to prevent the “we don’t do Junos” objection. Should Juniper should be looking at this as a growth opportunity and not as a profit opportunity ?

Hosts / Guests

Ashwin Kovummal, Product Manager for Junosphere, Juniper.

Dan Backman, JNCIE-ER #6 / JNCIE-MT #265 / JNCI, Solutions Architect / Product Marketing.


– What is Junosphere exactly?
– Where did it come from?
– What does it do / what problems is it intended to solve?
– What does Juniper think is unique about Junosphere?
– How do we expect people to use it?
– What users/environments is it targeted towards?

– What about Virtual Junos?
– VJX Series is a separate product that runs a virtual Junos image within Junosphere

Are there plans to offer a standalone version of Junosphere for proof of concept or change control testing?

Are there plans to offer Junosphere packages in less than 24 hour increments?


Handling hardware specific configuration e.g. QoS
How to buy / purchase order / pay ? Why should we pay, haven’t we paid enough already ?


Tom Hollingsworth | Twitter: @NetworkingNerd

Ethan Banks | Twitter: @ecbanks

and last, and the very least:

Greg Ferro| Twitter @etherealmind


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Greg Ferro
Greg Ferro is a Network Engineer/Architect, mostly focussed on Data Centre, Security Infrastructure, and recently Virtualization. He has over 20 years in IT, in wide range of employers working as a freelance consultant including Finance, Service Providers and Online Companies. He is CCIE#6920 and has a few ideas about the world, but not enough to really count. He is a host on the Packet Pushers Podcast, blogger at and on Twitter @etherealmind and Google Plus.
Greg Ferro
Greg Ferro
Greg Ferro
  • Jaakko Rautanen

    It would be great to get JunOS this integrated to GNS3 tightly. And it should be easier to use than Junos Olive with Qemu.

    • Chris Jones

      Junos. And no real need to get it in GNS3. We have Junosphere now. 

  • Pingback: An Outsider’s View of Junosphere | The Networking Nerd()

  • arulgobinath emmanuel

    Cisco IOU support 16 + routers with less than 768Mb ..  Placing the issue on memory is not an actual problem . But the packet generation etc .. is cool stuff. If they are only targetting Enterprise need to consider the full validation/fidelity etc . But for the acadamic/gerneral network folks i think strip down version like Cisco IOU is cool .. :)
    but disapointed :(

  • arulgobinath emmanuel

    I think Juniper too thinks that olive can do the job for lower end :)

  • Thomas Jefferson

    For the average Joe trying to better himself as a network engineer, the clear choice is Cisco IOS on GNS3 in preparation for Cisco certification exams.  Nobody else has anything even remotely comparable.  I can get unlimited CLI practice time for free at my convenience witout even being online.  Take a hike Juniper.