From Brocade switch: Mon Nov 30 16:33:56 2015 : Debug: (1) Received Access-Request Id 4 from X.X.X.X:10185 to X.X.X.X:1812 length 93 Mon Nov 30 16:33:56 2015 : Debug: (1) User-Name = "db00000" Mon Nov 30 16:33:56 2015 : Debug: (1) User-Password = "db00000\000\000\000\000\000\000\000\000\031" Mon Nov 30 16:33:56 2015 : Debug: (1) NAS-IP-Address = xxx.xx.xx.x Mon Nov 30 16:33:56 2015 : Debug: (1) NAS-Identifier = "XXXXXXXXXX" Mon Nov 30 16:33:56 2015 : Debug: (1) Calling-Station-Id = "xxx.xx.xx.xx" Mon Nov 30 16:33:56 2015 : Debug: (1) NAS-Port = 9160 Mon Nov 30 16:33:56 2015 : Debug: (1) NAS-Port-Type = Virtual Mon Nov 30 16:33:56 2015 : Debug: (1) session-state: No State attribute Mon Nov 30 16:33:56 2015 : Debug: (1) # Executing section authorize from file /etc/raddb/sites-enabled/default Mon Nov 30 16:33:56 2015 : Debug: (1) authorize { Mon Nov 30 16:33:56 2015 : Debug: (1) update request { Mon Nov 30 16:33:56 2015 : Debug: (1) EXPAND %{string:User-Password} Mon Nov 30 16:33:56 2015 : Debug: (1) --> db00000 Mon Nov 30 16:33:56 2015 : Debug: (1) Tmp-String-0 := db00000 Mon Nov 30 16:33:56 2015 : Debug: (1) EXPAND %{string:Tmp-String-0} Mon Nov 30 16:33:56 2015 : Debug: (1) --> db00000 Mon Nov 30 16:33:56 2015 : Debug: (1) User-Password := db00000 Mon Nov 30 16:33:56 2015 : Debug: (1) Overwriting value "db00000\000\000\000\000\000\000\000\000\031" with "db00000" Mon Nov 30 16:33:56 2015 : Debug: (1) } # update request = noop Resolved in this way: update request { Tmp-String-0 := "%{string:User-Password}" User-Password := "%{string:Tmp-String-0}" } Best regards. Stefano