90 About Your System
Table 1-23. Brocade M4424 SAN I/O Module Indicators
Indicator Type Pattern Description
Fibre Channel 
port status 
indicator 
Off No signal carrier
Amber on Signal present but not online
Green on Online, but no activity
Green blinking 
slowly
Online but segmented
Green blinking 
quickly
Internal loopback
Green flickering I/O activity on port
Amber blinking 
slowly
Port disabled
Amber blinking 
rapidly
Error or fault with port
Fibre Channel 
port speed 
indicator
Off 1 Gb link established
Green on 2 Gb link established
Amber on 4 Gb link established
Module status 
indicator
Off Module is off or enclosure power is off
Green on All ports are ready for use
Amber on Module is booting being reset, or ports are offline
Green/amber 
blinking
Diagnostic message in error log, or environmental 
range exceeded
Module power 
indicator
Off Power to the module is off 
Green Module has power
Status/
identification 
indicator
Blue on Primary module in a stack, if applicable
Blue off Secondary module in a stack
Amber flashing Fault condition in module