HP Fiber-Optic Hub Plus Guia do Utilizador descarregar pdf (Página 13)

Back of the Hub

Status LEDs

Power (green) is ON if the hub is receiving power.

(This is the same as

Line On on the front.)

Act – activity (green) is ON when data is being

transmitted. The frequency shows the amount of

traffic. In heavy traffic, it may appear on all the

time. (This LED is repeated on the front.)

Fault (yellow) is ON if the hub is faulty and needs to be replaced, FLASHING if a port has

been auto-segmented. (This LED is repeated on the front.)

Col – collision (yellow) is ON when collisions (two or more nodes trying to transmit on the

network at the same time) are detected on any of the attached cable segments. If collisions are

infrequent (which is normal), the light may be imperceptible. If it appears on continuously, see

chapter 4, “Troubleshooting”.

Port LEDs (green), one for each network port, fiber-optic ports 1 through 8, ThinLAN port and

AUI port, are ON when the corresponding port is enabled and functioning normally. Ports can

be enabled and disabled using the Port command on the hub’s console. The AUI port LED is

always ON when that port is enabled, even if it is not being used. Each Port LED will FLASH

if the port has been auto-segmented (see “Auto-Segmentation” later in this chapter).

Power

Status LEDs

Console port

ThinLAN port

AUI port

Fiber-optic ports

Introducing the HP Fiber-Optic Hub Plus 1-5

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HP Fiber-Optic Hub Plus Guia do Utilizador Página 13