Fast EtherHub-12s User’s Guide
4-4
Hardware Reference
Note: If the hub displays a high collision rate, check to see if any of the connected
devices are malfunctioning or if a loop has been formed in your network connections.
Otherwise, you may need to reconfigure your network to balance the traffic load.
Port Status Display
Partition Status
Color:
Red
Label:
Partition
Function:
Shows if the port has been isolated from the network
Condition
Indication
ON
Indicates port has been partitioned due to an abnormal network condition.
OFF
Port is in good condition.
A port is temporarily partitioned when a line error or too many collisions are
detected on the attached segment. While it is automatically partitioned, the
port continues to receive data from the segment. However, data is not
transmitted onto the segment. When the problem is corrected or a valid data
packet is received through the port, the port is automatically reconnected.
When partitioning occurs, the port’s corresponding Partition LED will be
continually lit (RED light). Otherwise, this LED should be OFF (unlit).
Notes: 1. When a long run of collisions occur on the cable connected to a hub port
(i.e., 64 collisions), that port is automatically partitioned by the hub. It is
automatically reconnected when a collision-free data packet at least 512
bits long (i.e., a minimum size legal packet) passes through the port.
Link Status
Color:
Green
Label:
Link
Function:
Indicates a valid network connection associated with the port.
Condition
Indication
ON
Indicates a valid link has been established on this port.
OFF
No valid link has been established on this port.
