Displaying the RMON Ether History Table

The RMON - Ether History Table window displays data for a selected interface.

For general information about the RMON history feature, see About RMON History and Statistics.

Field Descriptions

Index Integer that uniquely identifies a row in the history table.
Sample Index Integer that uniquely identifies the particular sample this entry represents among all samples associated with the same row of the history table.  This index starts at 1 and increases by one as each new sample is taken.
Interval Start Value of sysUpTime (in the mib-II system group) at the start of the interval over which this sample was measured. All of the following fields are counters for statistics gathered during the corresponding sampling interval.
Drop Events Number of events in which packets were dropped by the monitor due to lack of resources.  This is not necessarily the actual count of packets dropped, but the number of times this condition has been detected.
Octets Number of received octets of data (including those in bad packets).
Pkts Total number of packets received, including bad packets, broadcast packets, and multicast packets.
Broadcast Pkts Number of good broadcast packets received.
Multicast Pkts Number of good multicast packets received.
CRC Align Errors Number of packets received of the proper size (between 64 and 1,518 octets), but with either a CRC error or an alignment error (not an integral number of octets).
Undersize Pkts Number of packets received that were well formed but less than 64 octets long.
Oversize Pkts Number of packets received that were less well formed but greater than 1,518 octets long.
Fragments Number of packets received that were less than 64 octets long and with either a CRC error or an alignment error (not an integral number of octets).
Jabbers Number of packets received that were greater than 1,518 octets long and with either a CRC error or an alignment error (not an integral number of octets).
Collisions Best estimate of the total number of collisions.
Utilization Ratio between the total number of bits that were actually transmitted to the number of bits that could have been transmitted.