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Monitor the Device
Management Port LEDs
The Management port uses two bicolored (amber and green) LEDs to indicate the activity and speed of
the link.
•
The left bicolored LED (Link/Act) indicates the state of the link and whether it is active.
•
The right bicolored LED (Speed) indicates the current speed of the port.
Port label
Link/Activity
Speed
9920-16C Module LEDs
The front panel of the 9920-16C modules contains four LEDs located between the upper and lower
ports. The two LEDs on the left are both green and indicate the channel within the port, which is
indicated by the remaining two LEDs. The font panel also contains a Channel Selector button, which
cycles through the four selectable channels. The selected channel applies to all ports on the card.
Channel indicators
LED 0
0
0
1
1
The rate indication determines if a port is channelized. The link status for the entire port is indicated
regardless of the channel selected when the port is not channelized.
Color and state
Description
Off
Not applicable.
Green (steady)
Link established. The port link is established but there is
no data activity.
Green (blinking)
Link activity. The port link is established and there is data
activity.
The port is operating at 1 Gbps.
Green (slow blinking)
Disabled. The port is disabled by the admin.
Amber (steady)
Fault. A fault condition is detected.
Off
The port is operating at 10 Mbps.
Green (steady)
The port is operating at 1 Gbps.
Amber (steady)
The port is operating at 100 Mbps.
LED 1
0
1
0
1
9920 Network Packet Broker Hardware Installation Guide
Management Port LEDs
Port number
1
2
3
4
55
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