In one illustrative example, a user plane function (UPF) node may receive, from a controller node, a configuration of an allocated bandwidth for a predefined service classification associated with different predefined types of a communication resource at the UPF node, for each one of a plurality of different predefined service classifications associated with different predefined types of the communication resource. The UPF node may monitor a total bandwidth usage for each predefined service classification. Based on identifying that the total bandwidth usage exceeds a threshold limit, the UPF node may send, to the controller node, a message which indicates a request for readjusting the allocated bandwidth for the predefined service classification, and indicating the total bandwidth usage. The different predefined types of the communication resource may be different network slices at the UPF node, or different Quality of Service (QoS) Flow resource types at the UPF node, as examples.