5.8.1.2 Displaying RMON Statistics

Use the RMON Statistics screen to display key statistics for each port from RMON group 1. (RMON groups 2, 3 and 9 can only be accessed using SNMP management software.) The following screen displays the overall statistics on traffic passing through each port. RMON statistics provide access to a broad range of statistics, including a total count of different frame types and sizes passing through each port.

Values displayed have been accumulated since the last system reboot.

Parameter

Description

Drop Events

The total number of events in which packets were dropped due to lack

 

of resources.

Received Bytes

Total number of bytes of data received on the network. This statistic can

 

be used as a reasonable indication of Ethernet utilization.

Received Frames

The total number of frames (bad, broadcast and multicast) received.

Broadcast Frames

The total number of good frames received that were directed to the

 

broadcast address. Note that this does not include multicast packets.

Multicast Frames

The total number of good frames received that were directed to this

 

multicast address.

CRC/Alignment Errors

The number of CRC/alignment errors (FCS or alignment errors).

Undersize Frames

The total number of frames received that were less than 64 octets

 

long(excluding framing bits, but including FCS octets) and were

 

otherwise well formed.

Oversize Frames

The total number of frames received that were longer than 1518

 

octets(excluding framing bits, but including FCS octets) and were

 

otherwise well formed.

Fragments

The total number of frames received that were less than 64 octets in

 

length(excluding framing bits, but including FCS octets) and contained

 

either an FCS or alignment error.

Jabbers

The total number of frames received that were longer than 1518 octets

 

(excluding framing bits, but including FCS octets), and contained either

 

an FCS or alignment error.

Collisions

64 Byte Frames

65-127 Byte Frames

128-255 Byte Frames

The best estimate of the total number of collisions on this Ethernet segment.

The total number of frames (including bad packets) received and transmitted that were 64 octets in length (excluding framing bits but including FCS octets).

The total number of frames (including bad packets) received and transmitted where the number of octets fall within the specified range (excluding framing bits but including FCS octets).

WGS3 Layer 3 Switch User’s Manual

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