The Statistics History Control Table displays the following fields:
Index — Specifies the History Control Table entry from which the sample was taken.
Sample Index — Indicates the specific sample the information in the table reflects.
Interval Start — Indicates the time at which the sample was taken. The Interval start time is represented in an hour, minute, and second format, for example, 5 hours, 26 minutes, and 2 seconds.
Drop Events — Indicates the number of dropped packets due to lack of network resources during the sampling interval. This may not represent the exact number dropped packets, but rather the number of times dropped packets were detected.
Octets — Indicates the number of data octets, including bad packets, received on the network.
Pkts — Indicates the number of packets received during the sampling interval.
Broadcast Packets — Indicates the number of good broadcast packets received during the sampling interval.
Multicast Packets — Indicates the number of good multicast packets received during the sampling interval.
CRC Align Errors — Indicates the number of packets received during the sampling session with a length 64-1,518 octets. However, the packets has a bad Frame Check Sequence (FCS) with an integral number of octets or a bad FCS with a non-integral number.
Undersize Packets — Indicates the number of packets received less than 64 octets long during the sampling session.
Oversize Packets — Indicates the number of packets received more than 1,518 octets long during the sampling session.
Fragments — Indicates the number of packets received less than 64 octets long and had a FCS during the sampling session.
Jabbers — Indicates the number of packets received more than 1,518 octets long and had a FCS during the sampling session.
Collisions — Estimates the total number of packet collision that occurred during the sampling session. Collision are detected when repeater ports detects two or more stations transmit simultaneously.
Utilization — Estimates the main physical layer network usage on an interface during the session sampling. The value is reflected hundreds of percent. Use the following equation to figure the utilization:
packets * (96 + 64) + (Octets * 8)
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* 100%
Interval * 10^7