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Publication 1783-UM002C-EN-P - April 2009 17
Chapter 1
Dual-purpose Port Status Indicators
The status indicators on a dual-purpose port, as shown in the following figure, show whether
the RJ45 connector or an SFP module is active. The port can be configured as either a
10/100/1000 port through the RJ45 connector or as an SFP module, but not both. The status
indicators show which port is being used, and current port activity.
State Description
Off No link.
Solid green Link present.
Flashing green Activity. Port is sending or receiving data.
Flashing amber A link blocked by spanning tree is sending or receiving data.
Alternating
green/amber
Link fault. Error frames can affect connectivity, and errors such as excessive collisions, CRC errors, and alignment and
jabber errors are monitored for a link-fault indication (RJ45 connection only).
Solid amber Port is not forwarding. Port was disabled by management, an address violation, or spanning tree violation.
After a port is reconfigured, the port status indicator can remain amber for up to 30 seconds while spanning tree
checks the network for possible loops.
RJ45 Port In-use and Activity
Status Indicator
SFP Module Port In-use and Activity Status Indicator
SFP Module Port
RJ45 Port