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12 Hardware Overview
Each plug-in module also contains LEDs that provide information about the
link status and traffic activity on a port (Figure 1-5).
Figure 1-5. Port LEDs on Modules
Table 1-2 describes the LED status of the 10GbE BASE-T, 10GbE SFP+, and
40GbE QSFP+ ports.
Table 1-2. Port LED Status
Port LED Color Meaning
Link Status
Off The port is down.
Green The port is up and can transmit traffic at maximum
speed:
A QSFP+ port can transmit at 40G.
An SFP+ port can transmit at 10G.
A BASE-T port can transmit at 10G.
Yellow The port is up and is transmitting traffic at lower than
maximum speed:
A 40GbE QSFP+ port is transmitting at 10G.
A 10GbE SFP+ or 10GBASE-T port is transmitting at
1G or 100Mb.
Activity
Off No traffic is being transmitted or received on the port.
Blinking
Green
Traffic is being transmitted or received on the port.
Link Status
Activity
Link Status
Activity
Link Status
Activity