A bit array that contains the value of the
front panel status LEDs. This is a bit-map;
each LED is encoded into 1 bit for each switch
port. The maximum number of ports in one chassis
is 32 that means 32 Ports Status LEDs. The expansion port
number always begins from the last main port number.
The following shows the meaning of each bit for each
switch port:
bit value meaning
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0 off (Link off)
1 on (Link on)
The bitmap of LEDs are as following:
(Port1) (Port4) (Port8)
Bit (Bit0) (Bit3) (Bit7)
Byte 1: LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8
Byte 2: LED9 LED10 LED11 LED12 LED13 LED14 LED15 LED16
Byte 3: LED17 LED18 LED19 LED20 LED21 LED22 LED23 LED24
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