Since Broadcom acquired Brocade, support for many switches (like the 6510, 6520, and DCX) has ended. Former partners and recyclers sell for pennies on the dollar.
– If you buy used Brocade switches, ask the seller to transfer the license keys. Keys remain with the hardware if the seller provides them, but Broadcom may not support transfer of perpetual licenses between owners. brocade license generator
I notice you're asking about a "Brocade license generator." Brocade (now part of Broadcom) sells enterprise networking hardware (SAN switches, directors) that requires paid license keys to unlock features like advanced zoning, trunking, or extra ports. Since Broadcom acquired Brocade, support for many switches