While it is true that both alternate and backup ports in RSTP do not forward user traffic (they are in discarding state), the statement is FALSE because these ports DO receive and process BPDUs. In RSTP, alternate and backup ports actively participate in the protocol by:
- Receiving BPDUs from other switches
- Processing received BPDUs to maintain up-to-date topology information
- Being ready to rapidly transition to forwarding state if needed
The key distinction is that while they don't forward user data frames, they maintain full BPDU processing capability to ensure rapid convergence when topology changes occur.
Why the Statement is Wrong:
The second part of the statement - "cannot receive, process, and send BPDU" - is incorrect. RSTP's rapid convergence mechanism depends on all ports (including alternate and backup ports) maintaining current topology information through BPDU exchange. This is a fundamental difference from legacy STP where blocked ports had limited BPDU processing.
