From Wiki:

A supernetwork, or supernet, is an Internet Protocol (IP) network that is formed by aggregation of multiple networks (or subnets) into a larger network. The new routing prefix for the aggregate network represents the constituent networks in a single routing table entry. The process of forming a supernet is called supernetting, prefix aggregation, route aggregation, or route summarization.

https://en.wikipedia.org/wiki/Supernetwork

Topology

Prefix Advertised

Gateways advertise by default subnets prefixes discovered during the deployment:

Supernetting

Testing

Pinging an existent target:

Pinging a non existent target:

• A loop is introduced in the network:

• A loop is introduced in the network: