IBM Nways 8271 F12, User Manual

Page: 20 / 88

20 C
HAPTER
1: I
NTRODUCING THE
S
WITCH
Table 1 LED behavior
LED Color Indicates
Port Status LEDs
*
* If your Switch has 24 10BASE-T/100BASE-TX ports, these ports are numbered 1 to 24. If your
Switch has 12 10BASE-T/100BASE-TX ports, these ports are numbered 1 to 12. For both
models, ports supplied through an Expansion Module are numbered sequentially from the last
fixed port on the front of the unit.
Packet Yellow Packets are being transmitted/received on the port.
Off No packets are being transmitted/received on the
port.
Status Green A link is present, and the port is enabled.
Green flashing A link is present, but the port is disabled.
Off No link is present.
Expansion Module Port Status LEDs
Packet Yellow Packets are being transmitted/received on the
Expansion Module port(s).
Off No packets are being transmitted/received on the
Expansion Module port(s).
Status Yellow A valid Expansion Module is installed in the Switch.
Yellow flashing An unrecognized Expansion Module is installed in
the Switch.
Off No Expansion Module is installed in the Switch.
Unit LEDs
1–8 Green The Switch forms a stack with other Switch F12
and F24 / Switch E12 and E24 units; the LED
indicates the position of the Switch in the stack
and that a link is present. Note that although there
are eight LEDs, only four Switch units can be
stacked at present.
Off The Switch is stand-alone.
Power/Self Test LED
Green The Switch is powered-up.
Green flashing The Switch is either downloading software or is
initializing (which includes running a Power On Self
Test).
Yellow The Switch has failed its Power On Self Test.
Off The Switch is not receiving power.
F24usr.bk Page 20 Thursday, January 14, 1999 10:41 AM