Allied Telesis AT-2874SX - Manual (Page 61)

Chapter 4: Modifying Advanced Properties
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Here are guidelines for assigning a user-defined address:
 The address must be unique.
 The address consists of a 12-digit hexadecimal number, for
example, “020C46005501.”
 The address must start with “02” in the most significant byte, for
example, “020304050607.”
 Do not assign “0000 0000 0000” or “FFFF FFFF FFFF.”
 The range is from 0200 0000 0000 to 02FF FFFF FFFF.
4. Click OK.