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RMON tab fields


Field Description
Octets
The total number of octets of data (including those in bad packets) received on the network (excluding framing bits but including FCS octets). You can use this object as a reasonable estimate of Ethernet utilization. For greater precision, sample the etherStatsPkts and etherStatsOctets objects before and after a common interval.
Packets
The total number of packets (including bad packets, broadcast packets, and multicast packets) received.
BroadcastPkts
The total number of good packets received that were directed to the broadcast address. Note that this number does not include multicast packets.
MulticastPkts
The total number of good packets received that were directed to the multicast address. Note that this number does not include packets directed to the broadcast address.
CRCAlignErrors
The total number of packets received that had a length (excluding framing bits but including FCS octets) of between 64 and 1518 octets inclusive, but had either a bad Frame Check Sequence (FCS) with an integral number of octets (FCS Error) or a bad FCS with a nonintegral number of octets (Alignment Error).
UndersizePkts
The total number of packets received that were less than 64 octets long (excluding framing bits but including FCS octets) and were otherwise well formed.
OversizePkts
The total number of packets received that were more than 1518 octets long (excluding framing bits but including FCS octets) and were otherwise well formed.
Fragments
The total number of packets received that were less than 64 octets long (excluding framing bits but including FCS octets) and had either a bad Frame Check Sequence (FCS) with an integral number of octets (FCS Error) or a bad FCS with a nonintegral number of octets (Alignment Error). It is entirely normal for etherStatsFragments to increment because it counts both runts (which are normal occurrences due to collisions) and noise hits.
Collisions
The best estimate of the total number of collisions on this Ethernet segment.
Cumulative
The total count since the statistics tab was first opened. The elapsed time for the cumulative counter is displayed at the bottom of the graph dialog box.
Average
The cumulative count divided by the cumulative elapsed time.
Minimum
The minimum average for the counter for a given polling interval over the cumulative elapsed time.
Maximum
The maximum average for the counter for a given polling interval over the cumulative elapsed time.
Last value
The average for the counter over the last polling interval.


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