We're going to create a Python script, build-route-filters.py, that will login to a specified router, audit the prefix-list names, and then consult the IRRs in order to create updated versions of those prefix-lists.
- First of all, ensure that bgpq3 is installed on your system and working by running a test query.
$ bgpq3 -Jl eltel AS20597 policy-options { replace: prefix-list eltel { 81.9.0.0/20; 81.9.32.0/20; 81.9.96.0/20; 81.222.128.0/20; 81.222.160.0/20; 81.222.192.0/18; 85.249.8.0/21; 85.249.224.0/19; 89.112.0.0/17; 217.170.64.0/19; } }
- Assuming all is good, continue to create build-route-filters.py in your preferred development or text editor environment. Start by specifying Python as the script interpreter and importing ...
