Python script I developed to auto-provision L2VPNs on lab ASR-920 routers in bulk, in order to test certain scale/feature limitations on new software loads.
This script assumes you have a pair of IOS-XE devices running a recent software load (in my case, I used a pair of ASR-920-24SZ-M routers running IOS-XE 17.6.3). The devices should have layer 2 connectivity established, with an IGP providing layer 3 continuity between the loopback IPv4 addresses, and MPLS+LDP running. The following class-map should be provisioned on both devices as well:
class-map match-all CLASS-PLACEHOLDER-EGRESS
match qos-group 20
- I recommend running this in a virtual environment. Create one via
python -m venv ./venv, then activate it usingvenv/Scripts/activate(.bat). - Install the pip requirements with
pip install -r requirements.txt - Edit base.j2 to conform to your circuit labeling standards and/or requirements.
- Edit the sample .env to provide the username/password that has read/write access to your lab devices.
- Execute the script with
python main.py --help, which displays the usage.
- Provision n test L2VPNs
- Deprovision all test L2VPNs
- Generate n test L2VPNs, but only output the config to a file ("dry-run")