A PCC rule consists of traffic classifiers (Flow-Information AVPs) required for traffic identification, and one or more actions associated with such classified traffic. PCC rules are unidirectional, which means that each rule is applied on ingress or egress. They are provisioned from PCRF via Gx interface.
Traffic classification is based on:
5 Tuple (IPv4 and IPv6)
DSCP bits. When the content hosting device cannot be identified by the IP address, port and protocol, the DSCP marking can be used instead. Then, the DSCP marking is set by the client application and the markings should be preserved throughout the network until they reach the BNG.
Supported actions are:
rate limiting (in | out)
forwarding class (FC) change (in | out)
QoS forward (in | out)
next hop redirect (in)
service ID redirect (in)
HTTP redirect (in)
service gating function (in | out)
filter forward/drop (in | out)
Usage-Monitoring (in | out)