The current operational state of CEF distribution.
If the cefCfgDistributionAdminState is disabled(2), then
cefDistributionOperState will eventually go to the down(2)
state unless some error has occurred.
If cefCfgDistributionAdminState is changed to enabled(1)
then cefCfgDistributionOperState should change to up(1)
only if the CEF entity is ready to forward the packets
using Distributed Cisco Express Forwarding (dCEF) else
it should remain in the down(2) state. The up(1) state
for this object indicates that CEF entity is forwarding
the packet using Distributed Cisco Express Forwarding.