2009.8.24 Unicast Reverse Path Forwarding (uRPF) feature

4006+Supervisor IV (WS-X4515)要有Unicast Reverse Path Forwarding (uRPF) feature
Minimum Compatible Release要12.2(37)SG, Flash 64MB/DRAM 256MB

Unicast RPF helps to mitigate problems caused by the introduction of
malformed or forged IP source addresses into a network by discarding
IP packets that lack a verifiable IP source address.
Malformed or forged source addresses can indicate
denial-of-service (DoS) attacks based on source IP address spoofing.