question on SW1 - Fa0/21 (Workbook III-Lab1)

I am running into a problem when I verify layer 2 basic connectivity, wondering if someone having similar problem?

The Fa0/21 is apparently a routed interface on the original config but it is at down/down state. I verify all the trunk and etherchannel, spanning tree,

looks working, but it is unable ping to R5 - 140.x.57.5. I created a "test" vlan interface 140.x.57.y on SW1 and shutdown the fa0/21 port and

it can reach R5 ok.

Is there something missing here??


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