As Petr mentioned the other day, we have updated our .net file mappings to correspond with the new blueprint update for CCIE R&S v4.  Please refer to his previous post here.

If you are new to dynamips, view the tutorial Using Dynamips for CCIE Lab Preparation on a PC (How To Run Cisco IOS On Your PC)

The updated .net files can be downloaded here.  Like the previous version, the BackBone router configs are included and should automatically load when you run the .net files.

The major changes are as follows:

  • Separate .net files for Dynagen and GNS3
  • Platforms upgraded to all 3725s
  • Interface numbering now matches more closely on R1 - R6
  • Minor performance enhancements

These files were written with MacOS in mind, but can be easily modified to run on Windows and/or Linux.  From my personal experience it is very unlikely that you will get the entire topology to boot on Windows without a massive amount of hardware to back it up.

Happy Labbing!

Brian McGahan, CCIE #8593, CCDE #2013::13
About Brian McGahan, CCIE #8593, CCDE #2013::13

At the age of 20, Brian McGahan earned his first CCIE in Routing & Switching, and became known as the “youngest engineer in the world.” He continued on to earn CCIE certifications in Security, Service Provider, and Data Center. Brian has developed and taught for INE since 2002, setting the bar for CCIE training and helping thousands of engineers obtain their own certifications--we’re proud to have such an accomplished and driven instructor on the INE team. When he is not developing new products for INE, he consults with large ISPs and enterprise customers. You may contact Brian McGahan at or find him helping others in INE’s IEOC Community Forum.

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