Im wondering how to dedicate one port as INGRESS traffic and another port for EGRESS traffic.
Unless you're trying to do something really fancy ... I don't see how separating ports acording to traffic direction for traffic between two link peers could help. You are aware of the fact that 1000BaseT (gigabit ethernet) is full duplex, right? But why don't you use SFP+ connection (which is 10Gbps full duplex)?
Unless you're thinking about
ethernet bonding which may or may not increase throughput between RB4011 and CRS328. Surely not as much as using the SFP+ though.