Works fine

I only use it to monitor the system health and for that use case it works fine.

Although I figured out, that the performance data is in an incorrect format. Between several counters you’ll need to have a space to seperate. So by default the output is like this:
|SLOT-0/TEMP-1=38;;;SLOT-0/TEMP-2=26;;;SLOT-0/TEMP-3=38;;;SLOT-0/TEMP-4=23;;;FAN-1=9926;;;FAN-2=9782;;;

Correct would be:
|SLOT-0/TEMP-1=38;;; SLOT-0/TEMP-2=26;;; SLOT-0/TEMP-3=38;;; SLOT-0/TEMP-4=23;;; FAN-1=9926;;; FAN-2=9782;;;

Here’s a patch, that fixed it for me:
https://github.com/pashol/nagios-checks/blob/master/check_snmp_brocade.patch