Digital Equipment DECconcentrator 500, Руководство по установке, Страница: 26 / 98

1–6 DECconcentrator 500 Installation
1.5.1 Option Card Indicators
Each option card has one LED that provides card fault status. The other LEDs pro-
vide physical layer (PHY) status.
If system diagnostics detects a broken port, that port is bypassed and the remaining
ports continue to operate in the FDDI ring. The PHY LED turns red and the card fault
LED turns on.
If the system diagnostics finds all the ports faulty, the entire card is bypassed on the
backplane, and the card fault LED turns on.
Refer to Figure 1–1 for the location of the LEDs and Table 1–3 for a description of
the LEDs.
Table 1–3: Option Card Indicators
Icon LED I/O Panel Color
Normal
State
Description
Ring
OK Ring operation Network
Management
Card Green ON If ON, the ring is
operating.
Card fault Card Red OFF If ON, there is a problem
with the card.
PHY Physical
connection
status Card Green/
Red Green Indicates the state of the
physical connection.