Is the VSM booting from local disk? or from a central storage?
You should see only one static entry for VSM's management MAC address and it should be a dynamic entry on others.
Looks like you have VSM HA setup.
If I understand, you are saying that you can reach/ping VSM by creating a L3 interface on upstream switch. Then it is something to do with network configuration on upstream switches..
Is the VSM behind N1K VEM? Can you send the output of the following commands on the host where your VSMs are hosted.
vemcmd show l2 <mgmt vlan>
vemcmd show bd <mgmt vlan>
vemcmd show port
vemcmd show trunk
thanks,
Naren