When Lansweeper scans a switch, the model, serial, description and network interfaces are retrieved. For the network interfaces quite a lot of information is retrieved, including the MACs of connected assets. If these connected assets have also been scanned they will be listed on the switch asset pages next to the port they're connected to. Switch config isn't retrieved though currently.
If you're interested in a 30 day trial for unlimited assets you can contact our sales department (https://www.lansweeper.com/contact-sales/), they'll be happy to provide a trial, which will allow you to test out switch scanning.
For more information on the network device scanning requirements you can check out
this knowledgebase article. A how-to-guide can be found
here.