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14 CHAPTER 1: INTRODUCING THE OFFICECONNECT MANAGED SWITCH 9 AND SWITCH 9FX
LEDs Table 4 lists LEDs visible on the front of the Switch, and how to read their
status according to color. For information on using the LEDs for problem
solving, see “Solving Problems Indicated by LEDs” on page 52.
Table 4 LED behavior
LED Color Indicates
10BASE-T/100BASE-TX Port Status LEDs
Link/
Activity
Green A 100 Mbps link is present.
Yellow A 10 Mbps link is present.
Green flashing There is 100 Mbps activity on the port.
Yellow flashing There is 10 Mbps activity on the port.
Off No link is present.
Duplex Green The port is operating at full duplex
Off The port is operating at half duplex, or there is no link.
10BASE-T/100BASE-TX/1000BASE-T (GbE) Port Status LED (Switch 9 only)
Link/
Activity
Blue A 1000 Mbps link is present.
Green A 100 Mbps link is present.
Yellow A 10 Mbps link is present.
Blue flashing There is 1000 Mbps activity on the port.
Green flashing There is 100 Mbps activity on the port.
Yellow flashing There is 10 Mbps activity on the port.
Off No link is present.
Duplex Green The port is operating at full duplex
Off The port is operating at half duplex, or there is no link.
SFP Module Status LED (Switch 9 FX only)
Link/
Activity
Green The port has a link.
Green flashing There is activity on the port.
Off No link is present.
Module
Status
Green The SFP Module is present.
The corresponding 100BASE-FX port is disabled.
Off No SFP Module has been inserted.
The corresponding 100BASE-FX port can be used.
100BASE-FX Port Status LEDs (Switch 9 FX only)
Link/
Activity
Green The port has a link.
Green Flashing There is activity on the port.
Off No link is present.