NF PaaS capability discussion：enhanced ingress for NF

After completing cloud native OAM functions for CNF, a Ingress related function that can help CNF to expose its services for external access from outside the Kubernetes cluster may be the next Telco PaaS functionality.

Feature of Enhanced Ingress:

• Ingress support to use L3/L4 rules to indicate traffice forward rules besides using L7 rules.

• Ingress controller pod support to forward L3 traffic flows.

• Ingress controller report its BGP route to router.

Features of NF services that use this enhanced ingress:

• NF services that need external access is set in load balancer type when initiating.

• NF services are aet to use the enhanced ingress controller pod as the load balancer provider.