JN0-370 Question #267: Real Exam Question with Answer & Explanation

On node2: Juniper JN0-370 Exam user@node2> show ethernet-switching table Ethernet-switching tablE. 119 entries, 104 learned VLAN MAC address Type Age Interfaces vlan200 * Flood - N2:All-members N3:All-members N4:All-members vlan200 00:00:02:00:00:01 Learn 0 N2:ae0.0 vlan200 00:00:02:00:00:02 Learn 0 N2:ae0.0 vlan200 00:00:02:00:00:03 Learn 0 N2:ae0.0 vlan200 00:00:02:00:00:06 Learn 0 N2:ae0.0 On node5: user@node5> show ethernet-switching table Ethernet-switching tablE. 119 entries, 104 learned VLAN MAC address Type Age Interfaces vlan200 * Flood - N2:All-members N3:All-members N4:All-members vlan200 00:00:05:00:00:01 Learn 0 N5:ae0.0 vlan200 00:00:05:00:00:02 Learn 0 N5:ae0.0 vlan200 00:00:05:00:00:03 Learn 0 N5:ae0.0 vlan200 00:00:05:00:00:06 Learn 0 N5:ae0.0 user@node5>show route forwarding-table family ethernet-switching vlan vlan200---qfabric Routing tablE. default.ethernet-switching Destination Type RtRef Next hop Type Index NhRef Netif 7, * user 0 comp 1676 2 7, * intf 0 rslv 1650 1 7, 00:00:02:00:00:01 user 0 comp 1673 51 7, 00:00:02:00:00:02 user 0 comp 1673 51 7, 00:00:02:00:00:03 user 0 comp 1673 51 7, 00:00:02:00:00:05 user 0 comp 1673 51 7, 00:00:02:00:00:06 user 0 comp 1673 51 user@qfabric>show route fabric table default.bridge.0 bridge-route-mac-address 00:00:02:00:00:01 default.bridge.0: 110 destinations, 165 routes (110 active, 0 holddown, 0 hidden) + = Active Route, - = Last Active, * = Both Referring to the exhibit, Host A on Node device node2 and Host B on Node device node5 are on the same VLAN but Host A cannot ping Host B. Host A's MAC address is 00:00:02:00:00:01. Host B's MAC address is 00:00:05:00:00:01. What is causing this problem?