This repository provides a mininet + bmv2 simple_switch_grpc wrapper to instantiate a virntup_4 dataplane configurable via virntup
Parts of this wrapper are taken from the P4 tutorials repository.
In the context of virntup and environment (env) describes the link configuration that is present on a target.
Virntup uses physical link loops to instantiate virtual topologies. An env.json file describes which ports on the
switch are connected to one another and which ports are connected to a host.
An env.json file serves as an input to Virntup! Virntup will create some auxiliary files that then can be used to
configure the target switch as well as the connected hosts.
The environments folder contains some basic configurations that can be used. If you need to create your own
env, copy the template folder and adapt the files to reflect your target.
You can instantiate an environment specified in the environments folder with the scripts in the mininet_env directory.
As mininet also simulates the hosts, you also have to copy the host.json file, which is created during the envgen stage of virntup, to the host.
After you executed the mininet_env.py script with the respective parameters, you will be promoted with the mininet CLI. One BMv2 switch with P4 Runtime will also be started.
You can connect to the BMv2 switch and deploy virntup_4 to it using the virntup deploy stage. The exact deployment process is documented in the virntup repository.