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VLAN — Virtual Local Area Network
ELAN — Emulated Local Area Network
Difference between these two are as follows:-
An ELAN is a type of VLAN over an ATM network. However, it is defined at the MAC layer while VLANs may be defined by a MAC layer or by a IP address, including by protocols.

The above I just googled and got the answer for you.

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Posted by vernon