RMON Statistics
RMON Statistics 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 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 passing through each port. Values displayed have been accumulated since the last system reboot.
| Figure |
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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 | The number of frames received with CRC/alignment errors |
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 had 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 |
| had either an FCS or alignment error. |
50 Configuring and Monitoring the Switch | DNswitch 800 |