HP Virtual Connect Manager Command Line Interface for c-Class BladeSystem Version 3.70/3.75 User Guide

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Command line 122

Name RFC Description

rfc1757_StatsFragments

1757 The total number of packets received that were less than 64 octets in

length (excluding framing bits, but including FCS octets) and had either

a bad FCS with an integral number of octets (FCS Error) or a bad FCS

with a non-integral 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.

rfc1757_StatsJabbers

1757 The total number of packets received that were longer than 1518 octets

(excluding framing bits, but including FCS octets) and had either a bad

FCS with an integral number of octets (FCS Error) or a bad FCS with a

non-integral number of octets (Alignment Error).

This definition of jabber is different than the definition in IEEE-802.3

section 8.2.1.5 (10BASE5) and section 10.3.1.4 (10BASE2). These

documents define jabber as the condition where any packet exceeds

20 ms. The allowed range to detect jabber is between 20 ms and 150

ms.

rfc1757_StatsMulticastPkts

1757 The total number of good packets received that were directed to a

multicast address. This number does not include packets directed to the

broadcast address.

rfc1757_StatsOctets

1757 The total number of octets of data (including those in bad packets)

received on the network (excluding framing bits, but including FCS

octets).

This object can be used as a reasonable estimate of Ethernet utilization.

For greater precision, sample the etherStatsPkts and etherStatsOctets

objects 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 * (9.6 + 6.4) + (Octets * .8)] / 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.

rfc1757_StatsOversizePkts

1757 The total number of packets received that were longer than 1518 octets

(excluding framing bits, but including FCS octets) and were otherwise

well formed

rfc1757_StatsPkts

1757 The total number of packets (including bad packets, broadcast packets,

and multicast packets) received

rfc1757_StatsPkts1024to

1518Octets