SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
The Filter Data Base (FDB) block performs hardware lookup and provides the port mapping to firmware. It operates on ingress of the 2 RX physical ports and 1 RX host port.
The Filtering Database (FDB) is used to help ensure efficient usage of a Bridged LAN's resources by only forwarding received frames to those LAN segments on which they need to be. To this end, the FDB aggregates information used to make filtering and forwarding decisions for received MAC frames. The information may be statically or dynamically configured via control plane protocols, or dynamically learned based on observed traffic. Conceptually, the FDB is queried upon reception of each potentially forwarded frame, and the FDB provides the Forwarding Process with a set of potential transmission ports.
FDB Supported Features:
Not Supported Features:
Figure 6-217 shows a high-level view of the FDB module.
PRU0 or PRU1 cores only can access the FDB RAM's. RTU_PRU0 or RTU_PRU1 auxiliary cores only gets the result of FDB lookup to its broadside access.