Digital Networks North America DNswitch 800 Benutzerhandbuch

DNswitch 800

Configuring and Monitoring the Switch  49

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 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.

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 
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 that 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.