Refer to the exhibit. A network engineer checks connectivity between two routers. The engineer can ping the remote endpoint but cannot see an ARP entry. Why is there no ARP entry?
A.
When VRFs are used, ARP protocol must be enabled in each VRF.
B.
The ping command must be executed in the global routing table.
C.
Interface FastEthernet0/0 is configured in VRF CUST-A, so the ARP entry is also in that VRF.
D.
When VRFs are used, ARP protocol is disabled in the global routing table.
the ping command musty be executed from the global routing table.
if interface fa0/0 was in vrf then it wouldn't be shown with the command "show ip int brief", it would have been shown if the command included "vrf XXX" or "vrf all".
now that means that one IP is in the global and 1 IP is in the vrf.
specifically the .2 is in the vrf, thats why you dont see the arp in the global routing table or adjacency table to be more accurate.
if the ping was from the grt then there would also be arp if properley connected
I haven't researched it, but that is true for NX-OS, but not for IOS, as far as I know. For IOS, "show ip interfaces brief" shows all interfaces where an IP is assigned regardless of the VRF forwarding configured or not configured under it.
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