RTL8324P is 24*100Mbit. It implements RRCP protocol, per-port tx/rx counters, vlans and many more feathures. Note, that unlike RTL8326(S) RTL8324P contain no 802.1Q design flaw. Everything works perfectly. There is no perceptable difference beetween RTL8324P and RTL8324, except for no RRCP-related sections in recent versions of datasheet of later.
Here is manufacturer's product description:
Here is datasheet for this chip, including detail RRCP description: