Which condition can cause unicast reverse path forwarding to fail?
A. split horizon
B. STP convergence
C. PortFast security violation
D. asymmetric routing
Which condition can cause unicast reverse path forwarding to fail?
Which condition can cause unicast reverse path forwarding to fail?
A. split horizon
B. STP convergence
C. PortFast security violation
D. asymmetric routing
D
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_data_urpf/configuration/xe-3s/sec-data-urpf-xe-3s-book/sec-unicast-rpf-loose-mode.html
When traffic flows are asymmetrical, that is, those in which traffic from Network A to Network B would normally take a different path from traffic flowing from Network B to Network A, the Unicast RPF check will always fail the strict mode test.