Displaying Port Statistics

Port 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). The values displayed have been accumulated since the last system reboot.

Select the required port. The statistics displayed are indicated in the following figure and table.

Vertical Horizon Local Management -- VH-8G

 

 

Port Statistics : Port 1

 

 

 

EtherLike Counter:

 

 

 

 

 

Alignment Errors

:0

Late Collisions

:0

 

 

FCS Errors

:0

Excessive Collisions

:0

 

 

Single Collision Frames

:0

Internal MAC Transmit Errors:0

 

Multiple Collision Frames:0

Carrier Sense Errors

:0

 

 

SQE Test Errors

:0

Frames Too Long

:0

 

 

Deffered Transmissions

:0

Internal MAC Receive Errors :0

 

 

[Refresh Counters]

[Reset Counters]

 

 

<OK> <PREV PORT> <NEXT PORT>

 

 

 

Use <TAB> or arrow keys to move. <Enter> to select.

 

 

 

 

 

 

 

 

 

Figure 2-46. Port 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 transmission

Frames*

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 Collisions*

The number of frames for which transmission failed due to

 

 

excessive collisions.

 

 

Internal Mac

The number of frames for which transmission failed due to an

Transmit Errors*

internal MAC sublayer transmit error.

 

 

 

 

 

 

 

 

 

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VH-8G User Interface 57

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Enterasys Networks VH-8G manual Displaying Port Statistics