- There is no difference between the two because both elements are unrelated, encapsulation specified the trunk-protocol as denoted , allowed vlan(s) specifies which vlans are allowed on the trunk.
-- ' A nun once asked a penguin ' do you think the earth is flat ? ; the penguin replied :
Madam, it all depends , in Riemann geometries the earth can be perfectly flat! The nun thanked him , he tripped and fell forward : the poor animal had forgotten that he might be living in a Riemann geometry too!