System information

Web-Based Management
3-42
Port Statistics
Use the Port Statistics menu to display Etherlike or RMON statistics for any port on
the switch. The statistics displayed are indicated in the following figure and table.
Etherlike Statistics
Etherlike Statistics display key statistics from the Ethernet-like MIB for each port.
Error statistics on the traffic passing through each port are displayed. This
information can be used to identify potential problems with the switch (such as a
faulty port or unusually heavy loading). Values displayed have been accumulated
since the last system reboot.
Parameter Description
FCS Errors The number of frames received that are an integral number of octets in length but
do not pass the FCS check.
Single Collision Frames* The number of successfully transmitted frames for which transmission is inhibited
by exactly one collision.
Multiple Collision Frames* A count of successfully transmitted frames for which transmission is inhibited by
more than one collision.
SQE Test Errors* A count of times that the SQE TEST ERROR message is generated by the PLS
sublayer.
Deferred Transmissions* A count of frames for which the first transmission attempt on a particular interface
is delayed because the medium was busy.
Late Collisions The number of times that a collision is detected later than 512 bit-times into the
transmission of a packet.
Excessive Collisions* The number of frames for which transmission failed due to excessive collisions.
Internal Mac Transmit
Errors*
The number of frames for which transmission failed due to an internal MAC
sublayer transmit error.
Carrier
Sense Errors*
The number of times that the carrier sense condition was lost or never asserted
when attempting to transmit a frame.
Frames Too Long The number of frames received that exceed the maximum permitted frame size.
Internal Mac Receive
Errors
The number of frames for which reception failed due to an internal MAC sublayer
receive error.
* The reported values will always be zero because these statistics are not supported by the internal chip set
used in this switch.
Note: Statistics are automatically refreshed every 60 seconds.