It’s amazing how creative networking engineers become once they have the basic tools to get the job done a bit quicker. Last week Pete Crocker published the largest topology I’ve seen built with netsim-tools so far: a 13-router lab running RSVP TE to transport IP traffic between external autonomous systems1.
I particularly like the simplicity of building and configuring this lab:
- The topology file is as simple as it can get. netsim-tools takes care of IP addressing, Vagrant configuration file and Ansible inventory.
- netsim-tools configures interfaces, IP addresses, IS-IS, and BGP on over a dozen platforms (including Junos). All Pete had to create was a simple configuration template containing just a few lines (increase MTU, enable MPLS, enable MPLS TE).
I couldn’t start it on my meager Intel NUC with 32 GB of RAM and 8 cores; maybe it’s time to start labbing on AWS. ↩︎