Digital Networks North America DNswitch 800 manual Port Statistics, Etherlike Statistics

Port Statistics

Use the Port Statistics menu to display Etherlike or RMON statistics for any port on the switch. Select the required port. 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.

	Figure 3-41. Etherlike Statistics
Parameter	Description
Alignment Errors	The number of frames received that are not an integral number
	of octets in length and do not pass the FCS check.
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	The number of successfully transmitted frames for which
Frames*	transmission is inhibited by exactly one collision.
Multiple Collision	A count of successfully transmitted frames for which
Frames*	transmission is inhibited by more that one collision.
SQE Test Errors*	A count of times that the SQE TEST ERROR message is
	generated by the PLS sublayer.
Deferred	A count of frames for which the first transmission attempt on a
Transmissions*	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	The number of frames for which transmission failed due to
Collisions*	excessive collisions.
Internal Mac	The number of frames for which transmission failed due to an
Transmit Errors*	internal MAC sublayer transmit error.
Carrier Sense	The number of times that the carrier sense condition was lost or
Errors*	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	The number of frames for which reception failed due to an
Receive Errors*	internal MAC sublayer receive error.

*The reported values will always be zero because these statistics are not supported by the internal chip set.

DNswitch 800 Configuring and Monitoring the Switch 49