Hi, while studying the opennetworkinglab/ngsdn-tutorial project, I want to expand the topology by adding a new switch, leaf3, and a new host, h3, and there is a problem that h3 pinging h2 can ping through, but h2 pinging h3 can’t ping through.
Unfortunately, I have not used that particular P4 setup before, so I do not have specific advice on exactly what you might be missing. Someone else may read your question and be able to give that kind of advice.
I do, however, have general advice on troubleshooting these kinds of problems, which I have written about here: The host ping across switches is unreachable - #4 by andyfingerhut