Checking LEDs on the Nortel Ethernet Routing Switch 4500 Series
37
Port LED state indicators
This section describes the port LED state indicators by color and fluctuation
cues.
The following list describes the three port LEDs:
•
Activity indicates the level of activity on the link.
•
Link indicates the presence of an Ethernet link.
•
Speed indicates the port speed (for example, 10 Mb/s, 100 Mb/s, 1000
Mb/s).
RJ-45 Port LED state indicators
Label
Color and Status
Description
Green, Pulse
Green–Green
The port is set to operate at 1000 Mb/s on the ERS
4548GT-PWR, and 100 Mb/s on the ERS 4550T-PWR
(PoE models).
Green, Steady
The port is set to operate at 1000 Mb/s on the ERS
4548GT and 100 Mb/s on the ERS 4550T.
Amber, Pulse
Amber–Amber
The port is set to operate at 100 Mb/s on the ERS
4548GT-PWR and 10 Mb/s on the ERS 4550T-PWR
(PoE models).
Amber, Steady
100 Mb/s on the ERS 4548GT and 10 Mb/s on the ERS
4550T.
Amber, Green Pulse
The port is experiencing a PoE error.
Speed/PoE
Off
When the Link/Activity LED is green and the Speed LED
is off, the port is set to operate at 10 Mb/s for the ERS
4548GT or 4548GT-PWR models.
Green, Steady
The link established but no data activity exists.
Green, Blink
The link is established and data activity exists (the blink
rate indicates the level of activity).
Green, Slow Blink
The software disabled the port.
Amber, Blink
Not applicable.
Link /
Activity
Off
The port has no link or activity.
SFP transceiver Port LED state indicators
Label
Color and Status
Description
Green, Blink
Not applicable.
Green, Steady
The SFP port and the transmit port are active.
Amber, Blink
Not applicable.
In Use
Off
No SFP transceiver is present.
Nortel Ethernet Routing Switch 4500 Series
Installation Guide
NN47205-300
02.01
Standard
5.0
23 February 2007
Copyright © 2007, Nortel Networks
Nortel Networks Confidential
.
Summary of Contents for 4500 Series
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