Extreme Networks ExtremeWare XOS Command Reference Manual page 892

EAPS Commands
The BlackDiamond 8800 family of switches (formerly known as Aspen) and the Summit X450 switch
ship with an Advanced Edge license. To use the complete EAPS functionality, including running two or
more EAPS rings, having a switch belonging to multiple EAPS rings, or configuring shared-ports that
allow multiple EAPS domains to share a common link, you must have a Core software license.
For more information about software licensing, including how to obtain and upgrade your license, see
Chapter 1, "ExtremeWare XOS Overview" in the ExtremeWare XOS Concepts Guide.
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ExtremeWare XOS 11.3 Command Reference