# RMON High Capacity Statistics - Part I

To access this dialog box:

1. Select Device > Monitor > RMON.
2. With an entry selected, click Monitor.
3. Select RMON High Capacity Statistics - Part I.

The RMON High Capacity Statistics dialog box provides high counter RMON values.

The following information is displayed:

- Total Packets (etherStatsHighCapacityPkts)
- Total Octets (etherStatsHighCapacityOctets)
- etherStatsPkts Overflow (etherStatsHighCapacityOverflowPkts)
- etherStatsOctets Overflow (etherStatsHighCapacityOverflowOctets)
- etherStatsPkts64Octets Overflow (etherStatsHighCapacityOverflowPkts64Octets)
- etherStatsPkts65to127Octets Overflow (etherStatsHighCapacityOverflowPkts65to127Octets)
- etherStatsPkts128to255Octets Overflow (etherStatsHighCapacityOverflowPkts128to255Octets)
- etherStatsPkts256to511Octets Overflow (etherStatsHighCapacityOverflowPkts256to511Octets)
- etherStatsPkts512to1023Octets Overflow (etherStatsHighCapacityOverflowPkts512to1023Octets)
- etherStatsPkts1024to1518Octets Overflow (etherStatsHighCapacityOverflowPkts1024to1518Octets)

The following list specifies buttons in this dialog box, as well as their function:

- To specify the refresh rate for this dialog box, select a value from the drop-down box.

- Click Start/Stop to begin/end device monitoring.

> Note: The Start/Stop toggle feature is supported by CiscoView 5.3 and later.

- Click Cancel to close the dialog box.

- Click Print to print the contents of the dialog box.

- Click Help to access online help.

Total Packets (etherStatsHighCapacityPkts)

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

Total Octets (etherStatsHighCapacityOctets)

The total number of octets of data (including those in bad packets) received on the network. This number excludes framing bits but includes FCS octets).

If the network is half-duplex Fast Ethernet, this object can be used as a reasonable estimate of utilization. If greater precision is desired, the etherStatsHighCapacityPkts and etherStatsHighCapacityOctets objects should be sampled before and after a common interval. The differences in the sampled values are Pkts and Octets, respectively, and the number of seconds in the interval is Interval. These values are used to calculate the Utilization as follows:

Utilization = {Pkts * (.96 + .64) + (Octets * .08)}/{Interval * 10,000}

The result of this equation is the value Utilization which is the percent utilization of the ethernet segment on a scale of 0 to 100 percent.

This table is not appropriate for monitoring full-duplex ethernets. If the network is a full-duplex ethernet and the mediaIndependentTable is monitoring that network, the utilization can be calculated as follows:

1. Determine the utilization of the inbound path by using the appropriate equation (for ethernet or fast ethernet) to determine the utilization, substituting mediaIndependentInPkts for etherStatsHighCapacityPkts, and mediaIndependentInOctets for etherStatsHighCapacityOctets. Call the resulting utilization inUtilization.
2. Determine the utilization of the outbound path by using the same equation to determine the utilization, substituting mediaIndependentOutPkts for etherStatsHighCapacityPkts, and mediaIndependentOutOctetss for etherStatsHighCapacityOctets. Call the resulting utilization outUtilization.
3. The utilization is the maximum of inUtilization and outUtilization. This metric shows the amount of percentage of bandwidth that is left before congestion will be experienced on the link.

etherStatsPkts Overflow (etherStatsHighCapacityOverflowPkts)

Number of times the associated etherStatsPkts counter has overflowed.

etherStatsOctets Overflow (etherStatsHighCapacityOverflowOctets)

Number of times the associated etherStatsOctets counter has overflowed.

etherStatsPkts64Octets Overflow (etherStatsHighCapacityOverflowPkts64Octets)

Number of times the associated etherStatsPkts64Octets counter has overflowed.

etherStatsPkts65to127Octets Overflow (etherStatsHighCapacityOverflowPkts65to127Octets)

Number of times the associated etherStatsPkts65to127Octets counter has overflowed.

etherStatsPkts128to255Octets Overflow (etherStatsHighCapacityOverflowPkts128to255Octets)

Number of times the associated etherStatsPkts128to255Octets counter has overflowed.

etherStatsPkts256to511Octets Overflow (etherStatsHighCapacityOverflowPkts256to511Octets)

Number of times the associated etherStatsPkts256to511Octets counter has overflowed.

etherStatsPkts512to1023Octets Overflow (etherStatsHighCapacityOverflowPkts512to1023Octets)

Number of times the associated etherStatsPkts512to1023Octets counter has overflowed.

etherStatsPkts1024to1518Octets Overflow (etherStatsHighCapacityOverflowPkts1024to1518Octets)

Number of times the associated etherStatsPkts1024to1518Octets counter has overflowed