PLANET SGS-5220-24P2X - Manual (Page 333)

User’s Manual of SGS-5220 Series
4.18.6 RMON History Status
This Page provides an detail of RMON history entries; screen in Figure 4-18-7 appears.
Figure 4-18-7: RMON History Overview Page Screenshot
The Page includes the following fields:
Object Description
 History Index Indicates the index of History control entry.
 Sample Index Indicates the index of the data entry associated with the control entry.
 Sample Start The value of sysUpTime at the start of the interval over which this sample was
measured.
 Drop The total number of events in which packets were dropped by the probe due to
lack of resources.
 Octets The total number of octets of data (including those in bad packets) received on
the network.
 Pkts The total number of packets (including bad packets, broadcast packets, and
multicast packets) received.
 Broadcast The total number of good packets received that were directed to the broadcast
address.
 Multicast The total number of good packets received that were directed to a multicast
address.
CRC Errors 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 non-integral number of octets (Alignment Error).
 Undersize The total number of packets received that were less than 64 octets.
 Oversize The total number of packets received that were longer than 1518 octets.
 Frag. The number of frames which size is less than 64 octets received with invalid
CRC.
 Jabb. The number of frames which size is larger than 64 octets received with invalid
CRC.
 Coll. The best estimate of the total number of collisions on this Ethernet segment.
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