You can download Brocade software and firmware with a valid support contract.
FAQ:
Q: Can I try SANnav Management Portal and SANnav Global View without purchasing them?
A: There is no longer a SANnav trial license. If you need to test the capabilities of SANnav before deployment within your data center, contact your sales representative.
For more information, see the FAQ for Brocade SANnav Management Portal and SANnav Global View.
If you have any questions or need further assistance, contact Brocade Support