Intel 210T Stackable Hub User Guide - Page 8

Understanding 210T Hubs 210T Port LEDs The LEDs above each port provide information about the port's configuration and status. Left side: Green Right side: Yellow LED Status Left Solid green Blinking green Off Right Solid yellow Blinking yellow Erratic blinking yellow Blinking yellow and Status LED blinking Meaning Port has a link. Receive activity at port. No link detected. Port disabled by management (not applicable without optional Management Module). Speed mismatch. Check that device speed and hub speed match. Port auto-disabled (partitioned). See below. Out-of-specification cabling or port hardware problem. Try a different cable. Partitioned ports A port is automatically disabled (partitioned off) 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. 6