Fast EtherHub 3500 System User’s Guide
Hardware Reference 5-9
For example, if packet collisions reach 1%, the LED labeled 1
will light up. However, if collisions go beyond 1% (e.g., 15%),
the LED labeled 15+ and all the other LEDs before it (i.e., 1, 3,
5, and 10) will also light up in rapid succession.
FWhen more than 31 consecutive collisions occur on the cable
segment connected to a port, that port is automatically partitioned by
the hub. The hub automatically reconnects this port when a data
packet longer than 512 bits (normal) is transmitted or received by the
partitioned port without collision. This applies to all STP station ports
and the cascade port.
Partition/Disable Indicators
Color: Yellow
Label: Partition/Disable
Function: Indicates port has been partitioned due to network
error or intentionally disabled.
State Condition Indication
ON Partitioned Indicates port has been partitioned due to an abnormal
network condition.
OFF OK Port is in good condition.
BLINKING Disabled Indicates the port has been disabled via agent software.
Table 5.13 Partition/Disable Indicators
Partition - A port is temporarily partitioned when a line error
or too many collisions are detected on the attached segment.
While 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, it is automatically recon-
nected. When partitioning occurs, the port’s Partition LED
will be continually lit. Otherwise, this LED should be OFF.