Q: 17
An engineer must implement Strict Unicast Reverse Path
Forwarding mode for IPv4 packets on the Ethernet1/1 interface on the Cisco Nexus 9500 Series Switch. Which
configuration achieves this goal?
A)
B)
P-9
C)
D)
B)
P-9
C)
D)
Options
Discussion
D makes sense here. Strict uRPF checks if the source came in on the route's exact interface, and D configures 'ip verify unicast source reachable-via rx' which is strict mode. Pretty sure that's what's needed for Nexus. Open to other opinions if anyone's set this up before.
I don’t think it’s C. B.
Probably C, but which mode are they specifically asking for if the requirement was just 'loose' not 'strict' mode? Official guide examples could flip it for me.
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