Understanding 220T Hubs; 220T Port Leds - Intel Express 210T User Manual

4

Understanding 220T Hubs

220T Port LEDs

The LEDs above each port provide information about the port's
configuration and status.
Left side:
Orange/
Green
LED Status
Left Solid orange
Solid green
Blinking orange
Blinking green
Off
Right Solid yellow
Blinking yellow
Erratic blinking yellow
Blinking yellow and
Status LED blinking
Partitioned ports
A port is automatically disabled (partitioned) by the hub when an invalid
condition occurs, such as too many consecutive collisions.
Once the hub sees a valid packet of data from the device or is able to
transmit data to the port, the hub automatically re-enables (unpartitions) the
port. Clients are usually not affected by a partitioned port because the port is
often unpartitioned very quickly.
Usually, a partitioned port indicates an overloaded network or a
malfunctioning device (like an adapter card) on the network. To alleviate an
overloaded network, segment so that fewer devices share the fixed amount
of bandwidth.
Right side:
Yellow
Meaning
Device linked at 10Mbps.
Device linked at 100Mbps.
Receive activity at 10Mbps.
Receive activity at 100Mbps.
No link detected.
Port disabled by management (not applicable
without optional Management Module).
Speed mismatch (not applicable without
optional Management Module).
Port auto-disabled (partitioned). See below.
Out-of-specification cabling or port hardware
problem. Try a different cable.